SiENBE34-703 Service Manual Basic Training Manual R-410A Heat Pump 50Hz
SiENBE34-703 R-410A Heat Pump 50Hz 1. Introduction ........................................................................................... vi 1.1 Safety Cautions ....................................................................................... vi 1.2 PREFACE ................................................................................................x Part 1 General Information ........................................................... 1 1. Model Names of Indoor/Outdoor Units................
SiENBE34-703 4. Protection Control .................................................................................52 4.1 4.2 4.3 4.4 High Pressure Protection Control...........................................................52 Low Pressure Protection Control............................................................53 Discharge Pipe Protection Control .........................................................54 Inverter Protection Control .................................................................
SiENBE34-703 3.14 3.15 3.16 3.17 3.18 3.19 3.20 3.21 3.22 3.23 3.24 3.25 3.26 3.27 3.28 3.29 3.30 3.31 3.32 3.33 3.34 3.35 3.36 3.37 3.38 3.39 3.40 3.41 3.42 3.43 3.44 3.45 3.46 3.47 3.48 “E1” Outdoor Unit: PC Board Defect ......................................................138 “E3” Outdoor Unit: Actuation of High Pressure Switch ..........................139 “E4” Outdoor Unit: Actuation of Low Pressure Sensor ..........................141 “E5” Inverter Compressor Motor Lock ............................
SiENBE34-703 4.5 “MC” Address Duplication, Improper Setting ..........................................186 5. Troubleshooting by Indication on the Unified ON/OFF Control...........187 5.1 Operation Lamp Blinks .........................................................................187 5.2 Display “Under Host Computer Integrate Control” Blinks (Repeats Single Blink)..........................................................................189 5.
SiENBE34-703 Introduction 1. Introduction 1.1 Safety Cautions Cautions and Warnings ! Be sure to read the following safety cautions before conducting repair work. ! The caution items are classified into “ Warning” and “ Caution”. The “ Warning” items are especially important since they can lead to death or serious injury if they are not followed closely. The “ Caution” items can also lead to serious accidents under some conditions if they are not followed.
Introduction SiENBE34-703 Caution Do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock. Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock. Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid electrical shocks. Be sure to turn off the power switch and unplug the power cable when cleaning the equipment.
SiENBE34-703 Introduction Warning Be sure to use the specified cable to connect between the indoor and outdoor units. Make the connections securely and route the cable properly so that there is no force pulling the cable at the connection terminals. Improper connections can cause excessive heat generation or fire. When connecting the cable between the indoor and outdoor units, make sure that the terminal cover does not lift off or dismount because of the cable.
Introduction SiENBE34-703 Caution Check to see if the parts and wires are mounted and connected properly, and if the connections at the soldered or crimped terminals are secure. Improper installation and connections can cause excessive heat generation, fire or an electrical shock. If the installation platform or frame has corroded, replace it. Corroded installation platform or frame can cause the unit to fall, resulting in injury.
SiENBE34-703 1.2 Introduction PREFACE Thank you for your continued patronage of Daikin products. This is the new service manual for Daikin's Year 2007 VRVIII-S series Heat Pump System. Daikin offers a wide range of models to respond to building and office air conditioning needs. We are confident that customers will be able to find the models that best suit their needs. This service manual contains information regarding the servicing of VRVIII-S series R-410A Heat Pump System.
Introduction x SiENBE34-703
SiENBE34-703 Part 1 General Information 1. Model Names of Indoor/Outdoor Units....................................................2 2. External Appearance...............................................................................3 2.1 Indoor Units ..............................................................................................3 3. Capacity Range.......................................................................................
Model Names of Indoor/Outdoor Units SiENBE34-703 1.
SiENBE34-703 External Appearance 2. External Appearance 2.
Capacity Range SiENBE34-703 3. Capacity Range Outdoor Units Capacity Range RXYSQ No of Indoor Units to be Connected Total Capacity Index of Indoor Units to be Connected 4HP 4P 5HP 5P 6HP 6P 6 8 9 50~130 62.5~162.5 70~182 Indoor Units Capacity Range Capacity Index 0.8HP 20 1HP 25 1.25HP 31.25 1.6HP 40 2HP 50 2.5HP 62.5 3.
SiENBE34-703 Part 2 Specifications 1. Specifications ..........................................................................................6 1.1 Outdoor Units ...........................................................................................6 1.2 Indoor Units ..............................................................................................
Specifications SiENBE34-703 1. Specifications 1.1 Outdoor Units Heat Pump 50Hz Model Name H1 Cooling Capacity H2 Heating Capacity RXYSQ4P7Y1B RXYSQ5P7Y1B kcal / h 9,600 12,000 Btu / h 38,200 47,800 kW 11.2 14.0 kcal / h 10,800 13,800 Btu / h 42,700 54,600 kW 12.5 16.0 Daikin White Daikin White 1,345×900×320 1,345×900×320 Casing Color Dimensions: (H×W×D) mm Heat Exchanger Type Comp. m³/h 19.36 19.36 r.p.
SiENBE34-703 Specifications Model Name RXYSQ6P7Y1B H1 Cooling Capacity H2 Heating Capacity kcal / h 13,300 Btu / h 52,900 kW 15.5 kcal / h 15,500 Btu / h 61,400 kW Casing Color Dimensions: (H×W×D) mm Heat Exchanger Hermetically Sealed Scroll Type Piston Displacement m³/h 19.36 Number of Revolutions r.p.m 6,480 Motor Output×Number of Units kW Starting Method Propeller Fan Motor Output W 70×2 m³/min 106/105 Liquid Pipe mm φ9.52 (Flare Connection) Gas Pipe mm φ19.
Specifications 1.2 SiENBE34-703 Indoor Units Ceiling Mounted Cassette Type (Double Flow) Model FXCQ20M8V3 FXCQ25M8V3 FXCQ32M8V3 FXCQ40M8V3 kcal/h H1 Cooling Capacity (19.5°CWB) Btu/h H2 Cooling Capacity (19.
SiENBE34-703 Specifications Ceiling Mounted Cassette Type (Double Flow) Model FXCQ50M8V3 FXCQ63M8V3 FXCQ80M8V3 FXCQ125M8V3 kcal/h H1 Cooling Capacity (19.5°CWB) Btu/h H2 Cooling Capacity (19.
Specifications SiENBE34-703 Ceiling Mounted Cassette Type (Multi-flow) Model FXFQ20P7VE FXFQ25P7VE FXFQ32P7VE FXFQ40P7VE kcal/h H1 Cooling Capacity (19.5°CWB) Btu/h H2 Cooling Capacity (19.
SiENBE34-703 Specifications Ceiling Mounted Cassette Type (Multi-flow) Model FXFQ50P7VE FXFQ63P7VE FXFQ80P7VE FXFQ100P7VE kcal/h H1 Cooling Capacity (19.5°CWB) Btu/h H2 Cooling Capacity (19.
Specifications SiENBE34-703 Model FXFQ125P7VE kcal/h H1 Cooling Capacity (19.5°CWB) Btu/h H2 Cooling Capacity (19.
SiENBE34-703 Specifications 600×600 Ceiling Mounted Cassette Type (Multi Flow) Model FXZQ20M8V1 FXZQ25M8V1 FXZQ32M8V1 kcal/h H1 Cooling Capacity (19.5°CWB) Btu/h H2 Cooling Capacity (19.
Specifications SiENBE34-703 600×600 Ceiling Mounted Cassette Type (Multi Flow) Model FXZQ40M8V1 FXZQ50M8V1 kcal/h H1 Cooling Capacity (19.5°CWB) Btu/h H2 Cooling Capacity (19.
SiENBE34-703 Specifications Ceiling Mounted Cassette Corner Type Model FXKQ25MAVE FXKQ32MAVE FXKQ40MAVE kcal/h 2,500 3,200 4,000 6,300 H1 Cooling Capacity (19.5°CWB) Btu/h 9,900 12,600 16,000 24,900 kW 2.9 3.7 4.7 7.3 H2 Cooling Capacity (19.0°CWB) kW 2.8 3.6 4.5 7.1 H3 Heating Capacity kcal/h 2,800 3,400 4,300 6,900 Btu/h 10,900 13,600 17,100 27,300 kW Casing Dimensions: (H×W×D) Coil (Cross Fin Coil) 3.2 4.0 5.0 8.
Specifications SiENBE34-703 Slim Ceiling Mounted Duct Type (with Drain Pump) Model FXDQ20NAVE FXDQ25NAVE kcal/h 2,000 2,500 3,200 H1 Cooling Capacity (19.5°CWB) Btu/h 7,800 9,900 12,600 kW 2.3 2.9 3.7 H2 Cooling Capacity (19.0°CWB) kW 2.2 2.8 3.6 kcal/h 2,200 2,800 3,400 Btu/h 8,500 10,900 13,600 H3 Heating Capacity kW Casing Dimensions: (H×W×D) Coil (Cross Fin Coil) Fan 2.5 3.2 4.
SiENBE34-703 Specifications Slim Ceiling Mounted Duct Type (with Drain Pump) Model FXDQ40NAVE FXDQ50NAVE kcal/h 4,000 5,000 6,300 H1 Cooling Capacity (19.5°CWB) Btu/h 16,000 19,800 24,900 kW 4.7 5.8 7.3 H2 Cooling Capacity (19.0°CWB) kW 4.5 5.6 7.1 H3 Heating Capacity kcal/h 4,300 5,400 6,900 Btu/h 17,100 21,500 27,300 kW Casing Color Dimensions: (H×W×D) Coil (Cross Fin Coil) Fan 5.0 6.3 8.
Specifications SiENBE34-703 Slim Ceiling Mounted Duct Type (with Drain Pump) Model FXDQ20M8VE FXDQ25M8VE kcal/h H1 Cooling Capacity (19.5°CWB) Btu/h H2 Cooling Capacity (19.
SiENBE34-703 Specifications Ceiling Mounted Built-in Type Model FXSQ20M8V3 FXSQ25M8V3 FXSQ32M8V3 kcal/h H1 Cooling Capacity (19.5°CWB) Btu/h H2 Cooling Capacity (19.
Specifications SiENBE34-703 Ceiling Mounted Built-in Type Model FXSQ40M8V3 FXSQ50M8V3 FXSQ63M8V3 kcal/h H1 Cooling Capacity (19.5°CWB) Btu/h H2 Cooling Capacity (19.
SiENBE34-703 Specifications Ceiling Mounted Built-in Type Model FXSQ80M8V3 FXSQ100M8V3 FXSQ125M8V3 kcal/h H1 Cooling Capacity (19.5°CWB) Btu/h H2 Cooling Capacity (19.
Specifications SiENBE34-703 Ceiling Mounted Duct Type Model FXMQ40MAVE FXMQ50MAVE FXMQ63MAVE kcal/h 4,000 5,000 6,300 8,000 H1 Cooling Capacity (19.5°CWB) Btu/h 16,000 19,800 24,900 31,700 kW 4.7 5.8 7.3 9.3 H2 Cooling Capacity (19.0°CWB) kW 4.5 5.6 7.1 9.0 H3 Heating Capacity kcal/h 4,300 5,400 6,900 8,600 Btu/h 17,100 21,500 27,300 34,100 kW Casing Dimensions: (H×W×D) Coil (Cross Fin Coil) 5.0 6.3 8.0 10.
SiENBE34-703 Specifications Ceiling Mounted Duct Type Model H1 Cooling Capacity (19.5°CWB) FXMQ100MAVE FXMQ125MAVE kcal/h 10,000 12,500 Btu/h 39,600 49,500 kW 11.6 14.5 kW 11.2 14.0 kcal/h 10,800 13,800 Btu/h 42,700 54,600 kW 12.5 16.0 Galvanized Steel Plate Galvanized Steel Plate H2 Cooling Capacity (19.0°CWB) H3 Heating Capacity Casing Dimensions: (H×W×D) Coil (Cross Fin Coil) mm 390×1,110×690 390×1,110×690 Rows×Stages×Fin Pitch mm 3×16×2.0 3×16×2.0 Face Area m² 0.
Specifications SiENBE34-703 Ceiling Suspended Type Model H1 Cooling Capacity (19.5°CWB) H2 Cooling Capacity (19.0°CWB) H3 Heating Capacity FXHQ32MAVE FXHQ63MAVE FXHQ100MAVE kcal/h 3,200 6,300 10,000 Btu/h 12,600 24,900 39,600 kW 3.7 7.3 11.6 kW 3.6 7.1 11.2 kcal/h 3,400 6,900 10,800 Btu/h 13,600 27,300 42,700 kW 4.0 8.0 12.5 White (10Y9/0.5) White (10Y9/0.5) White (10Y9/0.
SiENBE34-703 Specifications Wall Mounted Type Model FXAQ20MAVE FXAQ25MAVE kcal/h 2,000 2,500 3,200 H1 Cooling Capacity (19.5°CWB) Btu/h 7,800 9,900 12,600 kW 2.3 2.9 3.7 H2 Cooling Capacity (19.0°CWB) kW 2.2 2.8 3.6 kcal/h 2,200 2,800 3,400 Btu/h 8,500 10,900 13,600 H3 Heating Capacity kW Casing Color Dimensions: (H×W×D) Coil (Cross Fin Coil) 3.2 4.0 White (3.0Y8.5/10.5) White (3.0Y8.5/10.5) mm 290×795×230 290×795×230 290×795×230 mm 2×14×1.4 2×14×1.4 2×14×1.
Specifications SiENBE34-703 Wall Mounted Type Model FXAQ40MAVE FXAQ50MAVE kcal/h 4,000 5,000 6,300 H1 Cooling Capacity (19.5°CWB) Btu/h 16,000 19,800 24,900 kW 4.7 5.8 7.3 H2 Cooling Capacity (19.0°CWB) kW 4.5 5.6 7.1 H3 Heating Capacity kcal/h 4,300 5,400 6,900 Btu/h 17,100 21,500 27,300 kW Casing Color Dimensions: (H×W×D) Coil (Cross Fin Coil) 6.3 8.0 White (3.0Y8.5/10.5) White (3.0Y8.5/10.5) mm 290×1,050×230 290×1,050×230 290×1,050×230 mm 2×14×1.4 2×14×1.
SiENBE34-703 Specifications Floor Standing Type Model FXLQ20MAVE FXLQ25MAVE kcal/h 2,000 2,500 3,200 H1 Cooling Capacity (19.5°CWB) Btu/h 7,800 9,900 12,600 kW 2.3 2.9 3.7 H2 Cooling Capacity (19.0°CWB) kW 2.2 2.8 3.6 kcal/h 2,200 2,800 3,400 Btu/h 8,500 10,900 13,600 H3 Heating Capacity kW Casing Color Dimensions: (H×W×D) Coil (Cross Fin Coil) 3.2 4.0 Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) mm 600×1,000×222 600×1,000×222 600×1,140×222 mm 3×14×1.5 3×14×1.
Specifications SiENBE34-703 Floor Standing Type Model FXLQ40MAVE FXLQ50MAVE kcal/h 4,000 5,000 6,300 H1 Cooling Capacity (19.5°CWB) Btu/h 16,000 19,800 24,900 kW 4.7 5.8 7.3 H2 Cooling Capacity (19.0°CWB) kW 4.5 5.6 7.1 H3 Heating Capacity kcal/h 4,300 5,400 6,900 Btu/h 17,100 21,500 27,300 kW Casing Color Dimensions: (H×W×D) Coil (Cross Fin Coil) 6.3 8.0 Ivory White (5Y7.5/1) Ivory White (5Y7.5/1) mm 600×1,140×222 600×1,420×222 600×1,420×222 mm 3×14×1.5 3×14×1.
SiENBE34-703 Specifications Concealed Floor Standing Type Model FXNQ20MAVE FXNQ25MAVE kcal/h 2,000 2,500 3,200 H1 Cooling Capacity (19.5°CWB) Btu/h 7,800 9,900 12,600 kW 2.3 2.9 3.7 H2 Cooling Capacity (19.0°CWB) kW 2.2 2.8 3.6 kcal/h 2,200 2,800 3,400 Btu/h 8,500 10,900 13,600 H3 Heating Capacity kW Casing Color Dimensions: (H×W×D) Coil (Cross Fin Coil) 3.2 4.0 Galvanized Steel Plate Galvanized Steel Plate mm 610×930×220 610×930×220 610×1,070×220 mm 3×14×1.
Specifications SiENBE34-703 Concealed Floor Standing Type Model FXNQ40MAVE FXNQ50MAVE kcal/h 4,000 5,000 6,300 H1 Cooling Capacity (19.5°CWB) Btu/h 16,000 19,800 24,900 kW 4.7 5.8 7.3 H2 Cooling Capacity (19.0°CWB) kW 4.5 5.6 7.1 H3 Heating Capacity kcal/h 4,300 5,400 6,900 Btu/h 17,100 21,500 27,300 kW Casing Color Dimensions: (H×W×D) Coil (Cross Fin Coil) 6.3 8.0 Galvanized Steel Plate Galvanized Steel Plate mm 610×1,070×220 610×1,350×220 610×1,350×220 mm 3×14×1.
SiENBE34-703 Specifications Ceiling Suspended Cassette Type Model Indoor Unit FXUQ71MAV1 FXUQ100MAV1 FXUQ125MAV1 Connection Unit BEVQ71MAVE BEVQ100MAVE BEVQ125MAVE kcal/h 7,100 10,000 12,500 Btu/h 28,300 39,600 49,500 kW 8.3 11.6 14.5 kW 8.0 11.2 14.0 kcal/h 7,700 10,800 12,000 Btu/h 30,700 42,700 47,800 kW 9.0 12.5 14.0 White (10Y9/0.5) White (10Y9/0.5) White (10Y9/0.5) H1 Cooling Capacity (19.5°CWB) H2 Cooling Capacity (19.
Specifications SiENBE34-703 BEV Units Model Power Supply Casing Dimensions: (H×W×D) mm Sound Absorbing Thermal Insulation Material Piping Connection BEVQ125MAVE 1 Phase 50Hz 220~240V Galvanized Steel Plate Galvanized Steel Plate Galvanized Steel Plate 100×350×225 100×350×225 100×350×225 Flame and Heat Resistant Foamed Polyethylene Flame and Heat Resistant Foamed Polyethylene Flame and Heat Resistant Foamed Polyethylene Liquid Pipes 9.5mm (Flare Connection) 9.5mm (Flare Connection) 9.
SiENBE34-703 Part 3 List of Electrical and Functional Parts 1. List of Electrical and Functional Parts ...................................................34 1.1 Outdoor Unit ...........................................................................................
List of Electrical and Functional Parts SiENBE34-703 1. List of Electrical and Functional Parts 1.
SiENBE34-703 Part 4 Refrigerant Circuit 1. Refrigerant Circuit .................................................................................36 1.1 RXYSQ4 / 5 / 6P ....................................................................................36 2. Functional Parts Layout ........................................................................38 2.1 RXYSQ4 / 5 / 6P ....................................................................................
Refrigerant Circuit SiENBE34-703 1. Refrigerant Circuit 1.1 RXYSQ4 / 5 / 6P No. in refrigerant Symbol system diagram 36 Name Major Function A M1C Inverter compressor (INV) Inverter compressor is operated on frequencies between 36 Hz and 195 Hz by using the inverter. 31 steps D M1F M2F Inverter fan Since the system is of air heat exchanging type, the fan is operated at 8-step rotation speed by using the inverter.
Refrigerant Circuit Filter ACCUMULATOR 7 F A Compressor Solenoid valve H Low pressure sensor O T Filter P Capillary tube High pressure switch E Electronic expansion valve Pressure regulating valve 3 S Stop valve (With service port on field piping side φ7.
Functional Parts Layout SiENBE34-703 2. Functional Parts Layout 2.
SiENBE34-703 Part 5 Function 1. Operation Mode ....................................................................................40 2. Basic Control.........................................................................................41 2.1 2.2 2.3 2.4 Normal Operation ...................................................................................41 Compressor PI Control...........................................................................42 Electronic Expansion Valve PI Control.............
Operation Mode SiENBE34-703 1.
SiENBE34-703 Basic Control 2. Basic Control 2.1 Normal Operation ! Cooling Operation Actuator Operation Compressor Compressor PI control Outdoor unit fan Four way valve Main electronic expansion valve (EV1) Subcooling electronic expansion valve (EV3) Cooling fan control OFF 480 pls Remarks Used for high pressure protection control, low pressure protection control, discharge pipe temperature protection control, and compressor operating frequency upper limit control with inverter protection control.
Basic Control 2.2 SiENBE34-703 Compressor PI Control Compressor PI Control Carries out the compressor capacity PI control to maintain Te at constant during cooling operation and Tc at constant during heating operation to ensure stable unit performance. [Cooling operation] Controls compressor capacity to adjust Te to achieve target value (TeS).
SiENBE34-703 2.3 Basic Control Electronic Expansion Valve PI Control Main Electronic Expansion Valve EV1 Control Carries out the electronic expansion valve (Y1E) PI control to maintain the evaporator outlet superheated degree (SH) at constant during heating operation to make maximum use of the outdoor unit heat exchanger (evaporator).
Basic Control 2.4 SiENBE34-703 Cooling Operation Fan Control In cooling operation with low outdoor air temperature, this control is used to provide the adequate amount of circulation air with liquid pressure secured by high pressure control using outdoor unit fan. Furthermore, when outdoor temperature ≥ 20°C, the compressor will run in Step 7 or higher. When outdoor temperature ≥ 18°C, it will run in Step 5 or higher. When outdoor temperature ≥ 12°C, it will run in Step 1 or higher.
SiENBE34-703 Special Control 3. Special Control 3.1 Startup Control This control is used to equalize the pressure in the front and back of the compressor prior to the startup of the compressor, thus reducing startup loads. Furthermore, the inverter is turned ON to charge the capacitor. In addition, to avoid stresses to the compressor due to oil return or else after the startup, the following control is made and the position of the four way valve is also determined.
Special Control 3.2 SiENBE34-703 Oil Return Operation In order to prevent the compressor from running out of oil, the oil return operation is conducted to recover oil flown out from the compressor to the system side. 3.2.1 Oil Return Operation in Cooling Operation [Start conditions] Referring to the set conditions for the following items, start the oil return operation in cooling.
SiENBE34-703 Special Control 3.2.2 Oil Return Operation in Heating Operation [Conditions to start] The heating oil-returning operation is started referring following conditions. ! Integrated amount of displaced oil ! Timer (After the power is turned on, integrated operating-time is 2 hours and subsequently every 8 hours.) In addition, integrated amount of displaced oil is derived from Tc, Te, and the compressor load.
Special Control 3.3 SiENBE34-703 Defrosting Operation The defrost operation is performed to solve frost on the outdoor unit heat exchanger when heating, and the heating capacity is recovered. [Conditions to start] The defrost operation is started referring following conditions. ! Outdoor heat exchanger heat transfer co-efficiency ! Temperature of heat-exchange (Tb) ! Timer (2 hours at the minimum) In addition, outdoor heat-exchange co-efficiency is derived from Tc, Te, and the compressor load.
SiENBE34-703 3.4 Special Control Pump-down Residual Operation When activating compressor, if the liquid refrigerant remains in the heat-exchanger, the liquid enters into the compressor and dilutes oil therein resulting in decrease of lubricity. Therefore, the pump-down residual operation is performed to collect the refrigerant in the heatexchanger when the compressor is down. 3.4.
Special Control 3.5 SiENBE34-703 Restart Standby Restart is stood by force to prevent frequent power-on/off and to equalize pressure in the refrigerant system. Actuator Operation Remarks Compressor OFF ⎯ Outdoor unit fan Ta>30°C: STEP4 Ta≤30°C: OFF ⎯ Four way valve Keep former condition. ⎯ Main electronic expansion valve (EV1) 0 pls ⎯ Subcooling electronic expansion valve (EV3) 0 pls ⎯ Hot gas bypass valve (SVP) OFF ⎯ Ending conditions 2 min.
SiENBE34-703 3.6 Special Control Stopping Operation Operation of the actuator when the system is down, is cleared up. 3.6.1 When System is in Stop Mode Actuator Operation Compressor OFF Outdoor unit fan OFF Four way valve Keep former condition. Main electronic expansion valve (EV1) 0 pls Subcooling electronic expansion valve (EV3) 0 pls Hot gas bypass valve (SVP) OFF Ending conditions Indoor unit thermostat is turned ON.
Protection Control SiENBE34-703 4. Protection Control 4.1 High Pressure Protection Control This high pressure protection control is used to prevent the activation of protection devices due to abnormal increase of high pressure and to protect compressors against the transient increase of high pressure. [In cooling operation] Pc>3.
SiENBE34-703 4.2 Protection Control Low Pressure Protection Control This low pressure protection control is used to protect compressors against the transient decrease of low pressure. [In cooling operation] Low pressure not limited Pe: LP pressure sensor detection value Pe>0.39MPa Pe<0.25MPa Low pressure limited Hot gas SVP = OFF Pe<0.15MPa Pe>0.30MPa 36Hz Unload Hot gas SVP = ON Pe<0.07MPa Low pressure standby When occurring 3 times within 30 min., the malfunction code "E4" is output.
Protection Control 4.3 SiENBE34-703 Discharge Pipe Protection Control This discharge pipe protection control is used to protect the compressor internal temperature against a malfunction or transient increase of discharge pipe temperature.
SiENBE34-703 4.4 Protection Control Inverter Protection Control Inverter current protection control and inverter fin temperature control are performed to prevent tripping due to a malfunction, or transient inverter overcurrent, and fin temperature increase. [Inverter overcurrent protection control] Not limited ·Inverter current12A ·INV upper limit frequency=max Hz & Inverter current >12A Limited INV upper limit frequency: 1-step down from current compressor frequency ·10 sec.
Other Control SiENBE34-703 5. Other Control 5.1 Demand Operation In order to save the power consumption, the capacity of outdoor unit is saved with control forcibly by using “Demand 1 Setting”. To operate the unit with this mode, additional setting of “Continuous Demand Setting”. [Demand 1 setting] Setting Demand 1 setting 1 Demand 1 setting 2 (factory setting) Demand 1 setting 3 Standard for upper limit of power consumption Approx. 60% Approx. 70% Approx.
SiENBE34-703 Outline of Control (Indoor Unit) 6. Outline of Control (Indoor Unit) 6.1 Drain Pump Control 1. The drain pump is controlled by the ON/OFF buttons (4 button (1) - (4) given in the figure below). 6.1.1 When the Float Switch is Tripped while the Cooling Thermostat is ON: Remote control “A3” flashing malfunction stop ON Thermostat (running) OFF ON Float switch OFF ON Drain pump OFF 5 min. *1) Residual operation 5 min. 5 sec. Malfunction residual (VL008) ∗ 1.
Outline of Control (Indoor Unit) SiENBE34-703 6.1.3 When the Float Switch is Tripped During Heating Operation: Thermostat (running) ON Remote control “A3” flashing malfunction stop OFF ON Humidifier OFF Reset ON Float switch OFF ON Drain pump OFF 5 min. 5 sec. 5 min. (VL010) During heating operation, if the float switch is not reset even after the 5 minutes operation, 5 seconds stop, 5 minutes operation cycle ends, operation continues until the switch is reset. 6.1.
SiENBE34-703 6.2 Outline of Control (Indoor Unit) Louver Control for Preventing Ceiling Dirt We have added a control feature that allows you to select the range of in which air direction can be adjusted in order to prevent the ceiling surrounding the air discharge outlet of ceiling mounted cassette type units from being soiled. (This feature is available on double flow, multiflow and corner types.
Outline of Control (Indoor Unit) 6.3 SiENBE34-703 Thermostat Sensor in remote control Temperature is controlled by both the thermostat sensor in remote control and air suction thermostat in the indoor unit. (This is however limited to when the field setting for the thermostat sensor in remote control is set to “Use.
SiENBE34-703 Outline of Control (Indoor Unit) Heating When heating, the hot air rises to the top of the room, resulting in the temperature being lower near the floor where the occupants are. When controlling by body thermostat sensor only, the unit may therefore be turned off by the thermostat before the lower part of the room reaches the preset temperature.
Outline of Control (Indoor Unit) 6.4 SiENBE34-703 Freeze Prevention Freeze Prevention by Off Cycle (Indoor Unit) When the temperature detected by liquid pipe temperature thermistor (R2T) of the indoor unit heat exchanger drops too low, the unit enters freeze prevention operation in accordance with the following conditions, and is also set in accordance with the conditions given below. Conditions for starting freeze prevention: Temperature is –1°C or less for total of 40 min.
SiENBE34-703 6.5 Outline of Control (Indoor Unit) View of Operations of Swing Flaps Swing flaps work as following.
Outline of Control (Indoor Unit) 6.6 SiENBE34-703 Electronic Expansion Valve Control • Electronic expansion Valve Control In cooling, to maximize the capacity of indoor unit heat exchanger (evaporator), operate the electronic expansion valve under PI control so that the evaporator outlet superheated degree (SH) will become constant.
SiENBE34-703 Part 6 Test Operation 1. Test Operation ......................................................................................66 1.1 Procedure and Outline ...........................................................................66 1.2 Operation when Power is Turned On .....................................................69 2. Outdoor Unit PC Board Layout .............................................................70 3. Field Setting .........................................................
Test Operation SiENBE34-703 1. Test Operation 1.1 Procedure and Outline Follow the following procedure to conduct the initial test operation after installation. 1.1.1 Check Work Prior to Turn Power Supply On Check the below items.
SiENBE34-703 Test Operation 1.1.3 Check Operation * During check operation, mount front panel to avoid the misjudging. * Check operation is mandatory for normal unit operation. (When the check operation is not executed, alarm code "U3" will be displayed.) Press and hold the TEST OPERATION button (BS4) on outdoor unit PC board for 5 seconds. Check on operation The test operation is started automatically. The following judgements are conducted within 15 minutes(about 30 minutes at the maximum).
Test Operation SiENBE34-703 1.1.4 Confirmation on Normal Operation • • • • • 68 Conduct normal unit operation after the check operation has been completed. (When outdoor air temperature is 24°CDB or higher, the unit can not be operated with heating mode. See the installation manual attached.) Confirm that the indoor/outdoor units can be operated normally.
SiENBE34-703 1.2 Test Operation Operation when Power is Turned On 1.2.1 When Turning On Power First Time The unit cannot be run for up to 12 minutes to automatically set the master power and address (indoor-outdoor address, etc.). Status Outdoor unit Test lamp H2P .... Blinks Can also be set during operation described above. Indoor unit If ON button is pushed during operation described above, the “UH” malfunction indicator blinks. (Returns to normal when automatic setting is complete.) 1.2.
Outdoor Unit PC Board Layout SiENBE34-703 2. Outdoor Unit PC Board Layout Outdoor unit PC board LED indicator status :Turn off (The LED indicator status shown at left indicates the status at factory set.) :Turn on :Flicker Test Page Error :Turn on or off Changeover between cooling and heating Batch Batch (Master) (Slave) Individual Low Demand noise DIP switches (DS1-1 and DS1-2 Mode Set Return Test Reset Sets the adress again when the wiring is changed or an indoor unit is added.
SiENBE34-703 Field Setting 3. Field Setting 3.1 Field Setting from remote control Individual function of indoor unit can be changed from the remote control. At the time of installation or after service inspection / repair, make the local setting in accordance with the following description. Wrong setting may cause malfunction. (When optional accessory is mounted on the indoor unit, setting for the indoor unit may be required to change. Refer to information in the option handbook.) 3.1.
Field Setting SiENBE34-703 3.1.2 Wireless remote control - Indoor Unit BRC7C type BRC7E type BRC4C type Mode No. Field set mode 3 4 5 Second code No. First code No. 2 1, 6 (V2770) 1. When in the normal mode, push the “ ” button for 4 seconds or more, and operation then enters the “field set mode.” 2. Select the desired “mode No.” with the “ ” button. 3. Pushing the “ ” button, select the first code No. 4. Pushing the “ ” button, select the second code No. 5.
SiENBE34-703 Field Setting 3.1.3 Simplified remote control BRC2C51 MODE NO. FIRST CODE NO. UNIT NO. SECOND CODE NO. 1. Remove the upper part of remote control. 2. When in the normal mode, press the [BS6] BUTTON (2) (field set), and the FIELD SET MODE is entered. 3. Select the desired MODE No. with the [BS2] BUTTON (3) (temperature setting s) and the [BS3] BUTTON (3) (temperature setting t). 4. During group control, when setting by each indoor unit (mode No.
Field Setting SiENBE34-703 3.1.4 Setting Contents and Code No. – VRV Indoor Unit VRV Mode Setting Setting Contents Switch system No. No. indoor Note 2 unit 0 Filter contamination heavy/ settings 10(20) light (Setting for display time to clean air filter) (Sets display time to clean air filter to half when there is heavy filter contamination.) 12(22) 13(23) 15(25) 1 Long life filter type 2 Super long life filter Light 02 Approx. 10,000 hrs. Heavy Approx. 5,000 hrs. Long life filter Approx.
SiENBE34-703 Field Setting 3.1.
Field Setting SiENBE34-703 3.1.6 Detailed Explanation of Setting Modes Filter Sign Setting If switching the filter sign ON time, set as given in the table below. Set Time Filter Specs. Setting Contamination Light Contamination Heavy Standard Long Life Ultra Long Life Filter 200 hrs. 100 hrs. 2,500 hrs. 1,250 hrs. 10,000 hrs. 5,000 hrs. Ultra-Long-Life Filter Sign Setting When a Ultra-long-life filter is installed, the filter sign timer setting must be changed. Setting Table Mode No.
SiENBE34-703 Field Setting Auto Restart after Power Failure Reset For the air conditioners with no setting for the function (same as factory setting), the units will be left in the stop condition when the power supply is reset automatically after power failure reset or the main power supply is turned on again after once turned off.
Field Setting SiENBE34-703 Air Flow Direction Setting Set the air flow direction of indoor units as given in the table below. (Set when optional air outlet blocking pad has been installed.) The second code No. is factory set to “01.” Setting Table Mode No. 13 (23) First Code No. 1 Second Code No. 01 02 03 Setting F : 4-direction air flow T : 3-direction air flow W : 2-direction air flow Setting of Air Flow Direction Adjustment Only the model FXKQ has the function.
SiENBE34-703 Field Setting Setting of Air Flow Direction Adjustment Range Make the following air flow direction setting according to the respective purpose. Setting Table Mode No. First Code No. Second Code No. 01 13 (23) 4 02 03 Setting Upward (Draft prevention) Standard Downward (Ceiling soiling prevention) Air flow rate switching at discharge grille for field air flow rate switching When the optional parts (high performance filter, etc.
Field Setting SiENBE34-703 3.1.7 Centralized Control Group No. Setting BRC1C Type In order to conduct the central remote control using the central remote control and the unified ON/OFF controller, Group No. settings should be made by group using the operating remote control. Make Group No. settings for central remote control using the operating remote control. 1. While in normal mode, press and hold the “ ” switch for a period of four seconds or more to set the system to "Field Setting Mode". 2.
SiENBE34-703 Field Setting BRC7C Type BRC7E Type BRC4C Type ! Group No. setting by infrared remote control for centralized control 1. When in the normal mode, push “ ” button for 4 seconds or more, and operation then enters the “field set mode.” 2. Set mode No. “00” with “ ” button. 3. Set the group No. for each group with “ ”“ ” button (advance/backward). 4. Enter the selected group numbers by pushing “ ” button. 5. Push “ ” button and return to the normal mode. Mode No. Field set mode 3 4 Group No.
Field Setting SiENBE34-703 3.1.8 Setting of Operation Control Mode from remote control (Local Setting) The operation control mode is compatible with a variety of controls and operations by limiting the functions of the operation remote control. Furthermore, operations such as remote control ON/OFF can be limited in accordance with the combination conditions. (Refer to information in the next page.) Central remote control is normally available for operations.
SiENBE34-703 How to Select Operation Mode Example ON by remote control (Unified ON by central remote control) ¯ Rejection Field Setting Whether operation by remote control will be possible or not for turning on/off, controlling temperature or setting operation mode is selected and decided by the operation mode given on the right edge of the table below.
Field Setting 3.2 SiENBE34-703 Field Setting from Outdoor Unit 3.2.1 Setting by Dip Switches The following field settings are made by dip switches on PC board. Dipswitch No. DS1-1 DS1-2 Setting ON OFF (Factory set) ON OFF (Factory set) Setting item Description Cool / Heat change over setting Used to set cool / heat change over setting by remote control equipped with outdoor unit. (Note 1) Not used Do not change the factory settings.
SiENBE34-703 Caution Field Setting Capacity Setting after changing the main P.C.Board(A1P) to spare parts P.C.B. When you change the main P.C.Board(A1P) to spare parts P.C.B., please carry out the following setting. Please Attach the Capacity Setting Adapter corresponding to Capacity Class (ex. 112, 140, 160) in connector X51A.
Field Setting SiENBE34-703 ! Setting by pushbutton switches The following settings are made by pushbutton switches on PC board. LED indication H1P H2P H3P H4P H5P H6P H7P 7 7 8 7 7 7 7 (Factory setting) BS1 BS2 BS3 BS4 BS5 MODE SET RETURN TEST RESET (V2760) There are the following three setting modes. $ Setting mode 1 (H1P off) Initial status (when normal) : Also indicates during “abnormal”.
SiENBE34-703 Field Setting a. “Setting mode 1” This mode is used to set and check the following items. 1. Set items ············ In order to make COOL/HEAT selection in a batch of outdoor unit group, change the setting. • COOL/HEAT selection (IND) ·····················Used to select COOL or HEAT by individual outdoor unit (factory set). • COOL/HEAT selection (MASTER) ············Used to select COOL or HEAT by outdoor unit group with the master unit.
Field Setting SiENBE34-703 b. “Setting mode 2” No. Push and hold the MODE (BS1) button for 5 seconds and set to “Setting mode 2”.
SiENBE34-703 Field Setting Setting item display No.
Field Setting SiENBE34-703 Setting item display No.
SiENBE34-703 Field Setting c. Monitor mode No. To enter the monitor mode, push the MODE (BS1) button when in “Setting mode 1”. Push the SET (BS2) button and set the LED display to a setting item. Push the RETURN (BS3) button to display different data of set items. Push the RETURN (BS3) button and switches to the initial status of “Monitor mode”.
Field Setting SiENBE34-703 Push the SET button and match with the LEDs No. 1 - 15, push the RETURN button, and confirm the data for each setting. H Data such as addresses and number of units is expressed as binary numbers; the two ways of expressing are as follows: 9 797997 16 32 4 8 1 2 In $ the address is 010110 (binary number), which translates to 16 + 4 + 2 = 22 (base 10 number). In other words, the address is 22. 977 7979 64 16 No.12 128 32 977 7997 4 No.13 8 The No.
SiENBE34-703 Field Setting 3.2.2 Cool / Heat Mode Switching There are the following 4 cool/heat switching modes. $ Set cool/heat separately for each outdoor unit system by indoor unit remote control. % Set cool/heat separately for each outdoor unit system by cool/heat switching remote control. & Set cool/heat for more than one outdoor unit system simultaneously in accordance with unified master outdoor unit by indoor unit remote control.
Field Setting SiENBE34-703 % Set Cool / Heat Separately for Each Outdoor Unit System by Cool/Heat Switching remote control # It does not matter whether or not there is outdoor - outdoor unit wiring. # Set outdoor unit PC board DS1-1 to OUT (factory set). # Set cool/heat switching to IND (individual) for “Setting mode 1” (factory set). C/H SELECT TEST MODE MALFUNC. H1P MASTER SLAVE IND H2P OUT O IN I H3P H4P L.N.O.P. DEMAND H5P H6P H7P C/H CELECT Dip SW DS1-1 I-O C/H SELECT R.C.
SiENBE34-703 Field Setting 3.2.3 Setting of Low Noise Operation and Demand Operation Setting of Low Noise Operation By connecting the external contact input to the low noise input of the outdoor unit external control adapter (optional), you can lower operating noise by 2-3 dB. When the low noise operation is carried out automatically at night (The external control adapter for outdoor unit is not required) 1. While in "Setting mode 2", select the setting condition (i.e.
Field Setting SiENBE34-703 Setting of Demand Operation By connecting the external contact input to the demand input of the outdoor unit external control adapter (optional), the power consumption of unit operation can be saved suppressing the compressor operating condition. Set item Demand Condition Mode 1 Mode 2 Mode 3 Content The compressor operates at approx. 60% or less of rating. The compressor operates at approx. 70% or less of rating. The compressor operates at approx. 80% or less of rating.
SiENBE34-703 Field Setting Detailed Setting Procedure of Low Noise Operation and Demand Control 1. Setting mode 1 (H1P off) $ In setting mode 2, push the BS1 (MODE button) one time. → Setting mode 1 is entered and H1P off. During the setting mode 1 is displayed, “In low noise operation” and “In demand control” are displayed. 2. Setting mode 2 (H1P on) $ In setting 1, push and hold the BS1 (MODE button) for more than 5 seconds. → Setting mode 2 is entered and H1P lights.
Field Setting SiENBE34-703 ": ON % $ Setting No. Setting contents 22 External low noise / Demand setting " ) ) ) ) Setting No.
SiENBE34-703 Field Setting 3.2.4 Setting of Refrigerant Additional Charging Operation * When the outdoor unit is stopped and the entire quantity of refrigerant cannot be charged from the stop valve on the liquid side, make sure to charge the remaining quantity of refrigerant using this procedure. If the refrigerant quantity is insufficient, the unit may malfunction. Turn ON the power of the indoor unit and the outdoor unit.
Field Setting SiENBE34-703 3.2.5 Setting of Refrigerant Recovery Mode When carrying out the refrigerant collection on site, fully open the respective expansion valve of indoor and outdoor units All indoor and outdoor unit’s operation are prohibited. [Operation procedure] $ In “Setting Mode 2” with units in stop mode, set “B Refrigerant Recovery / Vacuuming mode” to ON. The respective expansion valve of indoor and outdoor units are fully opened.
SiENBE34-703 Field Setting 3.2.6 Setting of Vacuuming Mode In order to perform vacuuming operation at site, fully open the expansion valves of indoor and outdoor units and turn on some solenoid valves. [Operating procedure] $ In “Setting Mode 2” with units in stop mode, set “B Refrigerant Recovery / Vacuuming mode” to ON. The respective expansion valve of indoor and outdoor units are fully opened.
Field Setting SiENBE34-703 102 Test Operation
SiENBE34-703 Part 7 Troubleshooting 1. Symptom-based Troubleshooting .......................................................105 2. Troubleshooting by remote control......................................................108 2.1 2.2 2.3 2.4 The INSPECTION / TEST Button.........................................................108 Self-diagnosis by Wired remote control................................................109 Self-diagnosis by infrared remote control.............................................
SiENBE34-703 3.27 “J9” Outdoor Unit: Malfunction of Subcooling Heat Exchanger Gas Pipe Thermistor (R4T) ..................................................................................154 3.28 “JA” Outdoor Unit: Malfunction of High Pressure Sensor......................155 3.29 “JC” Outdoor Unit: Malfunction of Low Pressure Sensor.......................156 3.30 “L1” Outdoor Unit: Malfunction of PC Board ..........................................157 3.
SiENBE34-703 Symptom-based Troubleshooting 1. Symptom-based Troubleshooting 1 Symptom The system does not start operation at all. Supposed Cause Blowout of fuse(s) Cutout of breaker(s) Countermeasure Turn Off the power supply and then replace the fuse(s). • If the knob of any breaker is in its OFF position, turn ON the power supply. • If the knob of any circuit breaker is in its tripped position, do not turn ON the power supply.
Symptom-based Troubleshooting 6 7 8 9 COOL-HEAT selection is disabled. The remote control displays "UNDER CENTRALIZED CONTROL", and the COOLHEAT selection remote control is provided. The system This symptom occurs conducts fan immediately after turning ON operation but not the power supply. cooling or heating operation. The airflow rate Even pressing the AIRFLOW is not RATE SET button makes no reproduced changes in the airflow rate. according to the setting.
SiENBE34-703 11 The system produces sounds. Symptom-based Troubleshooting Symptom Immediately after turning ON the power supply, indoor unit produces "ringing" sounds. "Hissing" sounds are continuously produced while in cooling or defrosting operation. "Hissing" sounds are produced immediately after the startup or stop of the system, or the startup or stop of defrosting operation.
Troubleshooting by Remote Control SiENBE34-703 2. Troubleshooting by Remote Control 2.1 The INSPECTION / TEST Button The following modes can be selected by using the [Inspection/Test Operation] button on the remote control. Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Depress Inspection/Test Operation button for more than 4 seconds.
SiENBE34-703 2.2 Troubleshooting by Remote Control Self-diagnosis by Wired Remote Control Explanation If operation stops due to malfunction, the remote control’s operation LED blinks, and malfunction code is displayed. (Even if stop operation is carried out, malfunction contents are displayed when the inspection mode is entered.) The malfunction code enables you to tell what kind of malfunction caused operation to stop. See page 116 for malfunction code and malfunction contents.
Troubleshooting by Remote Control 2.3 SiENBE34-703 Self-diagnosis by Infrared Remote Control In the Case of BRC7C Type BRC7E Type BRC4C Type If equipment stops due to a malfunction, the operation indicating LED on the light reception section flashes. The malfunction code can be determined by following the procedure described below. (The malfunction code is displayed when an operation error has occurred. In normal condition, the malfunction code of the last problem is displayed.) 1.
SiENBE34-703 Troubleshooting by Remote Control ! The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed. “Advance” button “Backward” button (SE007) Normal status Enters inspection mode from normal status when the INSPECTION/TEST button is pressed. 1 Press INSPECTION/TEST button If no button is pressed for 1 minute, equipment returns to normal status. 3 Press mode selector button.
Troubleshooting by Remote Control 2.4 SiENBE34-703 Operation of the remote control’s Inspection / Test Operation Button Unit Malfunction code Inspection Malfunction code blinks when a malfunction occurs. Normal display (No display) Inspection/test operation Unit Malfunction code Inspection Push the button. 0 L0 0 7 1... Capacity code F... Indoor unit system code C... Indoor unit type code J...
SiENBE34-703 2.5 Troubleshooting by Remote Control remote control Service Mode How to Enter the Service Mode Normal operation mode Field set mode Push the Service Mode Operation Method Troubleshooting button for 4 seconds or longer Push the Service mode button for 4 seconds or longer 1. Select the mode No. Set the desired mode No. with the button. (For infrared remote control, Mode 43 only can be set.) 2. Select the unit No. (For group control only) Select the indoor unit No.
Troubleshooting by Remote Control Mode No 40 Function Malfunction hysteresis display SiENBE34-703 Contents and operation method Display malfunction hysteresis. The history No. can be changed with the button. remote control display example Unit 1 40 Malfunction code 2-U4 Malfunction code Hystory No: 1 - 9 1: Latest (VE007) 41 Display of sensor and address data Display various types of data. Select the data to be displayed with the button. Sensor data 0: Thermostat sensor in remote control.
SiENBE34-703 2.6 Troubleshooting by Remote Control remote control Self-Diagnosis Function The remote control switches are equipped with a self diagnosis function so that more appropriate maintenance can be carried out. If a malfunction occurs during operation, the operation lamp, malfunction code and display of malfunctioning unit No. let you know the contents and location of the malfunction.
Troubleshooting by Remote Control Indoor Unit Outdoor Unit 116 SiENBE34-703 Malfunction Operation Inspection code lamp display A0 9 9 A1 9 9 A3 9 9 A6 9 9 A7 8 9 A9 9 9 Unit No.
SiENBE34-703 Troubleshooting by Remote Control Malfunction Operation Inspection code lamp display Outdoor Unit System Central remote control and Schedule Timer Heat Reclaim Ventilation Unit No.
Troubleshooting by Remote Control SiENBE34-703 Malfunction code indication by outdoor unit PC board Contents of malfunction To enter the monitor mode, push the MODE (BS1) button when in “Setting mode 1”. Push the SET (BS2) button and set the LED display to a setting item. Push the RETURN (BS3) button once to display "First digit" of malfunction code.
SiENBE34-703 Troubleshooting by Remote Control 8: ON 7: OFF 9:Blink Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 Confirmation of malfunction 4 Malfunction code H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P E1 9 7 7 9 9 E7 9 9 9 9 9 7 7 7 7 7 7 7 9 9 9 7 9 7 7 9 9 9 7 9 9 E9 9 9 7 7 9 H9 9 9 7 7 9 9 9 9 9 9 9 9 9 9 9 9 9 7 7 7 7 9 7 9 9 9 9 7 9 J5 9 7 9 7 9 J
Troubleshooting by Remote Control SiENBE34-703 Contents of malfunction To enter the monitor mode, push the MODE (BS1) button when in “Setting mode 1”.
SiENBE34-703 Troubleshooting by Remote Control 8: ON 7: OFF 9:Blink Confirmation of malfunction 1 Confirmation of malfunction 2 Confirmation of malfunction 3 Confirmation of malfunction 4 Malfunction code H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P P1 9 9 7 7 7 9 7 7 7 9 9 7 7 7 7 9 7 7 P4 U0 9 9 7 7 9 U2 7 9 7 7 9 7 7 7 7 9 7 7 9 9 7 7 7 7 7 9 7 7 9 9 9 9 9 9 9 9 9 9 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7
Troubleshooting by Indication on the remote control SiENBE34-703 3. Troubleshooting by Indication on the remote control 3.
SiENBE34-703 3.2 Troubleshooting by Indication on the remote control “A1 ” Indoor Unit: PC Board Defect remote control Display A1 Applicable Models All indoor unit models Method of Malfunction Detection Check data from E²PROM. Malfunction Decision Conditions When data could not be correctly received from the E²PROM E²PROM : Type of nonvolatile memory. Maintains memory contents even when the power supply is turned off.
Troubleshooting by Indication on the remote control 3.3 “A3 ” Indoor Unit: Malfunction of Drain Level Control System (S1L) remote control Display A3 Applicable Models FXCQ, FXFQ, FXZQ, FXKQ, FXSQ, FXMQ, FXHQ (Option), FXAQ (Option) Method of Malfunction Detection By float switch OFF detection Malfunction Decision Conditions When rise of water level is not a condition and the float switch goes OFF.
SiENBE34-703 Troubleshooting by Indication on the remote control Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. NO Is power supply 220~240V provided? Provide 220~240V power supply. YES The float switch is connected to X8A (or X15A) of the indoor unit PC board.
Troubleshooting by Indication on the remote control 3.
SiENBE34-703 3.5 Troubleshooting by Indication on the remote control “A7 ” Indoor Unit: Malfunction of Swing Flap Motor (M1S) remote control Display A7 Applicable Models FXCQ, FXKQ, FXZQ, FXHQ, FXUQ Method of Malfunction Detection Utilizes ON/OFF of the limit switch when the motor turns. Malfunction Decision Conditions When ON/OFF of the microswitch for positioning cannot be reversed even though the swing flap motor is energized for a specified amount of time (about 30 seconds).
Troubleshooting by Indication on the remote control SiENBE34-703 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is power supply 220~240V provided? NO Provide 220~240V power supply. YES Indoor unit is a model equipped with a swing flap function NO Replace indoor unit PC board. YES The swing motor works when the power supply is turned off and then back on.
SiENBE34-703 3.
Troubleshooting by Indication on the remote control SiENBE34-703 ∗1: Coil check method for the moving part of the electronic expansion valve Discount the electronic expansion valve from the PC board and check the continuity between the connector pins. (Normal) Pin No. 1. White 2. Yellow 3. Orange 4. Blue 5. Red 1. White 2. Yellow × 3. Orange " Approx. 300Ω × 4. Blue × " Approx. 300Ω × 5. Red " Approx. 150Ω × " Approx. 150Ω × 6. Brown × " Approx. 150Ω × " Approx. 150Ω × 6.
SiENBE34-703 3.7 Troubleshooting by Indication on the remote control “AF” Indoor Unit: Drain Level above Limit remote control Display AF Applicable Models FXCQ, FXSQ, FXKQ, FXMQ, FXDQ Method of Malfunction Detection Water leakage is detected based on float switch ON/OFF operation while the compressor is in non-operation. Malfunction Decision Conditions When the float switch changes from ON to OFF while the compressor is in non-operation.
Troubleshooting by Indication on the remote control 3.8 SiENBE34-703 “AJ ” Indoor Unit: Malfunction of Capacity Determination Device remote control display AJ Applicable Models All indoor unit models Method of Malfunction Detection Capacity is determined according to resistance of the capacity setting adapter and the memory inside the IC memory on the indoor unit PC board, and whether the value is normal or abnormal is determined. Malfunction Decision Conditions Operation and: 1.
SiENBE34-703 3.9 Troubleshooting by Indication on the remote control “C4 ” Indoor Unit: Malfunction of Thermistor (R2T) for Heat Exchanger remote control Display C4 Applicable Models All indoor unit models Method of Malfunction Detection Malfunction detection is carried out by temperature detected by heat exchanger thermistor. Malfunction Decision Conditions When the heat exchanger thermistor becomes disconnected or shorted while the unit is running.
Troubleshooting by Indication on the remote control SiENBE34-703 3.10 “C5 ” Indoor Unit: Malfunction of Thermistor (R3T) for Gas Pipes remote control Display C5 Applicable Models All indoor unit models Method of Malfunction Detection Malfunction detection is carried out by temperature detected by gas pipe thermistor. Malfunction Decision Conditions When the gas pipe thermistor becomes disconnected or shorted while the unit is running.
SiENBE34-703 Troubleshooting by Indication on the remote control 3.11 “C9 ” Indoor Unit: Malfunction of Thermistor (R1T) for Suction Air remote control Display C9 Applicable Models AII indoor unit models Method of Malfunction Detection Malfunction detection is carried out by temperature detected by suction air temperature thermistor. Malfunction Decision Conditions When the suction air temperature thermistor becomes disconnected or shorted while the unit is running.
Troubleshooting by Indication on the remote control SiENBE34-703 3.12 “CA ” Indoor Unit: Malfunction of Thermistor for Discharge Air remote control Display CA Applicable Models AII indoor unit models Method of Malfunction Detection Malfunction detection is carried out by temperature detected by discharge air temperature thermistor. Malfunction Decision Conditions When the discharge air temperature thermistor becomes disconnected or shorted while the unit is running.
SiENBE34-703 Troubleshooting by Indication on the remote control 3.13 “CJ ” Indoor Unit: Malfunction of Thermostat Sensor in remote control remote control Display CJ Applicable Models AII indoor unit models Method of Malfunction Detection Malfunction detection is carried out by temperature detected by remote control air temperature thermistor. (Note1) Malfunction Decision Conditions When the remote control air temperature thermistor becomes disconnected or shorted while the unit is running.
Troubleshooting by Indication on the remote control SiENBE34-703 3.14 “E1 ” Outdoor Unit: PC Board Defect remote control Display E1 Applicable Models RXYSQ4~6P Method of Malfunction Detection Check data from E²PROM Malfunction Decision Conditions When data could not be correctly received from the E²PROM E²PROM : Type of nonvolatile memory. Maintains memory contents even when the power supply is turned off.
SiENBE34-703 Troubleshooting by Indication on the remote control 3.15 “E3 ” Outdoor Unit: Actuation of High Pressure Switch remote control Display E3 Applicable Models RXYSQ4~6P Method of Malfunction Detection Abnormality is detected when the contact of the high pressure protection switch opens. Malfunction Decision Conditions Error is generated when the HPS activation count reaches the number specific to the operation mode.
Troubleshooting by Indication on the remote control SiENBE34-703 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Check for the points shown below. 1 Is the stop valve open? 2 Is the HPS connector properly connected to the main PCB? 3 Does the high pressure switch have continuity? Are the three points above OK? NO Rectify defective points, if any. YES · Mount a pressure gauge on the high-pressure service port.
SiENBE34-703 Troubleshooting by Indication on the remote control 3.16 “E4” Outdoor Unit: Actuation of Low Pressure Sensor remote control Display E4 Applicable Models RXYSQ4~6P Method of Malfunction Detection Abnormality is detected by the pressure value with the low pressure sensor. Malfunction Decision Conditions Error is generated when the low pressure is dropped under specific pressure. Operating pressure:0.
Troubleshooting by Indication on the remote control SiENBE34-703 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. NO Is the stop valve open? Open the stop valve. YES 1 Mount a pressure gauge on the low-pressure service port. 2 Connect the Service Checker. 3 Reset the operation using the remote control, and then restart the operation. Are the characteristics of the low pressure sensor normal? (See *1.
SiENBE34-703 Troubleshooting by Indication on the remote control 3.17 “E5 ” Inverter Compressor Motor Lock remote control Display E5 Applicable Models RXYSQ4~6P Method of Malfunction Detection Inverter PC board takes the position signal from UVW line connected between the inverter and compressor, and the malfunction is detected when any abnormality is observed in the phasecurrent waveform.
Troubleshooting by Indication on the remote control SiENBE34-703 3.18 “E7 ” Malfunction of Outdoor Unit Fan Motor remote control Display E7 Applicable Models RXYSQ4~6P Method of Malfunction Detection Malfunction of fan motor system is detected according to the fan speed detected by hall IC when the fan motor runs.
SiENBE34-703 Troubleshooting by Indication on the remote control 3.19 “E9” Outdoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (Y1E, Y3E) remote control Display E9 Applicable Models RXYSQ4~6P Method of Malfunction Detection Check disconnection of connector Check continuity of expansion valve coil Malfunction Decision Conditions Error is generated under no common power supply when the power is on.
Troubleshooting by Indication on the remote control SiENBE34-703 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Turn power supply off, and turn power supply on again. Return to normal? YES External factor other than malfunction (for example, noise etc.). NO Electronic expansion valve is connected to X21A and X22A of outdoor unit PC board (A1P). NO After connecting, turn the power off and then back on again.
SiENBE34-703 Troubleshooting by Indication on the remote control 3.20 “F3 ” Outdoor Unit: Abnormal Discharge Pipe Temperature remote control Display F3 Applicable Models RXYSQ4~6P Method of Malfunction Detection Abnormality is detected according to the temperature detected by the discharge pipe temperature sensor.
Troubleshooting by Indication on the remote control SiENBE34-703 3.21 “F6 ” Outdoor Unit: Refrigerant Overcharged remote control Display F6 Applicable Models RXYSQ4~6P Method of Malfunction Detection Excessive charging of refrigerant is detected by using the heat exchanging deicer temperature during a check operation. Malfunction Decision Conditions When the amount of refrigerant, which is calculated by using the heat exchanging deicer temperature during a check run, exceeds the standard.
SiENBE34-703 Troubleshooting by Indication on the remote control 3.22 “H9” Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air remote control Display H9 Applicable Models RXYSQ4~6P Method of Malfunction Detection Malfunction is detected from the temperature detected by the outdoor air thermistor. Malfunction Decision Conditions When the outside air temperature thermistor has short circuit or open circuit.
Troubleshooting by Indication on the remote control SiENBE34-703 3.23 “J3 ” Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R2T) remote control Display J3 Applicable Models RXYSQ4~6P Method of Malfunction Detection Malfunction is detected from the temperature detected by discharge pipe temperature thermistor. Malfunction Decision Conditions When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected.
SiENBE34-703 Troubleshooting by Indication on the remote control 3.24 “J5” Outdoor Unit: Malfunction of Thermistor (R3T, R5T) for Suction Pipe 1, 2 remote control Display J5 Applicable Models RXYSQ4~6P Method of Malfunction Detection Malfunction is detected from the temperature detected by the thermistor for suction pipe 1, 2. Malfunction Decision Conditions When a short circuit or an open circuit in the thermistor for suction pipe 1, 2 are detected.
Troubleshooting by Indication on the remote control SiENBE34-703 3.25 “J6” Outdoor Unit: Malfunction of Thermistor (R6T) for Outdoor Unit Heat Exchanger remote control Display J6 Applicable Models RXYSQ4~6P Method of Malfunction Detection Malfunction is detected from the temperature detected by the heat exchanger thermistor. Malfunction Decision Conditions When a short circuit or an open circuit in the heat exchange thermistor is detected.
SiENBE34-703 Troubleshooting by Indication on the remote control 3.26 “J7” Outdoor Unit: Malfunction of Thermistor (R7T) for Outdoor Unit Liquid Pipe remote control Display J7 Applicable Models RXYSQ4~6P Method of Malfunction Detection Malfunction is detected from the temperature detected by the liquid pipe thermistor. Malfunction Decision Conditions When a short circuit or an open circuit in the heat exchange thermistor is detected.
Troubleshooting by Indication on the remote control SiENBE34-703 3.27 “J9” Outdoor Unit: Malfunction of Subcooling Heat Exchanger Gas Pipe Thermistor (R4T) remote control Display J9 Applicable Models RXYSQ4~6P Method of Malfunction Detection Malfunction is detected according to the temperature detected by subcooling heat exchanger gas pipe thermistor. Malfunction Decision Conditions When the subcooling heat exchanger gas pipe thermistor is short circuited or open.
SiENBE34-703 Troubleshooting by Indication on the remote control 3.28 “JA ” Outdoor Unit: Malfunction of High Pressure Sensor remote control Display JA Applicable Models RXYSQ4~6P Method of Malfunction Detection Malfunction is detected from the pressure detected by the high pressure sensor. Malfunction Decision Conditions When the high pressure sensor is short circuit or open circuit. Supposed Causes ! Defect of high pressure sensor ! Connection of low pressure sensor with wrong connection.
Troubleshooting by Indication on the remote control SiENBE34-703 3.29 “JC ” Outdoor Unit: Malfunction of Low Pressure Sensor remote control Display JC Applicable Models RXYSQ4~6P Method of Malfunction Detection Malfunction is detected from pressure detected by low pressure sensor. Malfunction Decision Conditions When the low pressure sensor is short circuit or open circuit. Supposed Causes ! Defect of low pressure sensor ! Connection of high pressure sensor with wrong connection.
SiENBE34-703 Troubleshooting by Indication on the remote control 3.30 “L1 ” Outdoor Unit: Malfunction of PC Board remote control Display L1 Applicable Models RXYSQ4~6P Method of Malfunction Detection ! Detect malfunctions by current value during waveform output before compressor startup. ! Detect malfunctions by current sensor value during synchronized operation at the time of startup.
Troubleshooting by Indication on the remote control SiENBE34-703 3.31 “L4” Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise remote control Display L4 Applicable Models RXYSQ4~6P Method of Malfunction Detection Fin temperature is detected by the thermistor of the radiation fin. Malfunction Decision Conditions When the temperature of the inverter radiation fin increases above 83°C.
SiENBE34-703 Troubleshooting by Indication on the remote control 3.32 “L5” Outdoor Unit: Inverter Compressor Abnormal remote control Display L5 Applicable Models RXYSQ4~6P Method of Malfunction Detection Malfunction is detected from current flowing in the power transistor. Malfunction Decision Conditions When an excessive current flows in the power transistor. (Instantaneous overcurrent also causes activation.
Troubleshooting by Indication on the remote control SiENBE34-703 3.33 “L8 ” Outdoor Unit: Inverter Current Abnormal remote control Display L8 Applicable Models RXYSQ4~6P Method of Malfunction Detection Malfunction is detected by current flowing in the power transistor. Malfunction Decision Conditions When overload in the compressor is detected.
SiENBE34-703 Troubleshooting by Indication on the remote control 3.34 “L9” Outdoor Unit: Inverter Start up Error remote control Display L9 Applicable Models RXYSQ4~6P Method of Malfunction Detection Malfunction is detected from current flowing in the power transistor.
Troubleshooting by Indication on the remote control SiENBE34-703 3.35 “LC ” Outdoor Unit: Malfunction of Transmission between Inverter and Control PC Board remote control Display LC Applicable Models RXYSQ4~6P Method of Malfunction Detection Check the communication state between inverter PC board and control PC board by microcomputer. Malfunction Decision Conditions When the correct communication is not conducted in certain period.
SiENBE34-703 Troubleshooting by Indication on the remote control 3.36 “P1 ” Outdoor Unit: High Voltage of Capacitor in Main Inverter Circuit remote control Display P1 Applicable Models RXYSQ4~6P Method of Malfunction Detection Malfunction is detected according to the voltage waveform of main circuit capacitor built in the inverter. Malfunction Decision Conditions When the aforementioned voltage waveform becomes identical with the waveform of the power supply open phase.
Troubleshooting by Indication on the remote control SiENBE34-703 3.37 “UO ” Outdoor Unit: Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure remote control Display U0 Applicable Models RXYSQ4~6P Method of Malfunction Detection Short of gas malfunction is detected by discharge pipe temperature thermistor and low pressure saturation temperature. Malfunction Decision Conditions Microcomputer judge and detect if the system is short of refrigerant.
SiENBE34-703 Troubleshooting by Indication on the remote control Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. YES Cooling Low pressureis 0.25 MPaor less. NO YES Out of gas, closing of stop valve or refrigerant system is clogged. Requires check of refrigerant system. NO The voltage of X18A pins (2) and (3) on main outdoor unit PC board (A1P) is 1.0 VDC or less.
Troubleshooting by Indication on the remote control SiENBE34-703 3.38 “U2 ” Power Supply Insufficient or Instantaneous Failure remote control Display U2 Applicable Models RXYSQ4~6P Method of Malfunction Detection Detection of voltage of main circuit capacitor built in the inverter and power supply voltage. Malfunction Decision Conditions When the abnormal voltage of main circuit capacitor built in the inverter and abnormal power supply voltage are detected.
SiENBE34-703 Troubleshooting by Indication on the remote control Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Have the power supply voltages between L1 and L2, L2 and L3, and L1 and L3 fallen within the range of 380 to 415V±10% (50 Hz) and between L and N within the range of 220 to 240V±10% (50 Hz)? NO Correct the power supply voltages. If L2 or Phase N is open, replace the switch box.
Troubleshooting by Indication on the remote control SiENBE34-703 3.39 “U3 ” Check Operation not Executed remote control Display U3 Applicable Models RXYSQ4~6P Method of Malfunction Detection Check operation is executed or not Malfunction Decision Conditions Malfunction is decided when the unit starts operation without check operation. Supposed Causes ! Check operation is not executed.
SiENBE34-703 Troubleshooting by Indication on the remote control 3.40 “U4” Malfunction of Transmission between Indoor Units and Outdoor Units remote control Display U4 Applicable Models AII indoor unit models RXYSQ4~6P Method of Malfunction Detection Microcomputer checks if transmission between indoor and outdoor units is normal.
Troubleshooting by Indication on the remote control SiENBE34-703 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Has the indoor or outdoor unit PC board been replaced, or has the indoor - outdoor or outdoor - outdoor unit transmission wiring been modified? YES NO All indoor unit remote controls of the same refrigerant system display"U4.
SiENBE34-703 Troubleshooting by Indication on the remote control 3.41 “U5 ” Malfunction of Transmission between remote control and Indoor Unit remote control Display U5 Applicable Models AII indoor unit models Method of Malfunction Detection In case of controlling with 2-remote control, check the system using microcomputer is signal transmission between indoor unit and remote control (main and sub) is normal.
Troubleshooting by Indication on the remote control SiENBE34-703 3.42 “U8 ” Malfunction of Transmission between Main and Sub remote controls remote control Display U8 Applicable Models AII indoor unit models Method of Malfunction Detection In case of controlling with 2-remote control, check the system using microcomputer if signal transmission between indoor unit and remote control (main and sub) is normal. Malfunction Decision Conditions Normal transmission does not continue for specified period.
SiENBE34-703 Troubleshooting by Indication on the remote control 3.
Troubleshooting by Indication on the remote control SiENBE34-703 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. "U9" has been displayed for 2 minutes or more. YES Re-diagnose by display after passage of 2 minutes or more. NO Turn on all indoor units. The "UA" display blinks on the remote controls of other units within the same refrigerant system. YES Refer to failure diagnosis for "UA" malfunction code.
SiENBE34-703 Troubleshooting by Indication on the remote control 3.44 “UA ” Excessive Number of Indoor Units remote control Display UA Applicable Models AII indoor unit models Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes ! ! ! ! Excess of connected indoor units Defect of outdoor unit PC board (A1P) Mismatching of the refrigerant type of indoor and outdoor unit. Setting of outdoor PC board was not conducted after replacing to spare parts PC board.
Troubleshooting by Indication on the remote control SiENBE34-703 3.45 “UC ” Address Duplication of Central remote control Remote Control Display UC Applicable Models AII indoor unit models Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes ! Address duplication of centralized remote control ! Defect of indoor unit PC board Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
SiENBE34-703 Troubleshooting by Indication on the remote control 3.46 “UE ” Malfunction of Transmission between Central remote control and Indoor Unit remote control Display UE Applicable Models AII indoor unit models Centralized controller Method of Malfunction Detection Microcomputer checks if transmission between indoor unit and centralized remote control is normal.
Troubleshooting by Indication on the remote control Troubleshooting Caution SiENBE34-703 Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Has an indoor unit once connected been remove or its address changed? NO Is the power supply turned on for indoor units displaying malfunction? YES Reset power supply simultaneously for all optional controllers for centralized control. NO Turn indoor unit's power supply.
SiENBE34-703 Troubleshooting by Indication on the remote control 3.47 “UF” System is not Set yet remote control Display UF Applicable Models All models of indoor units RXYSQ4~6P Method of Malfunction Detection On check operation, the number of indoor units in terms of transmission is not corresponding to that of indoor units that have made changes in temperature.
Troubleshooting by Indication on the remote control SiENBE34-703 3.
SiENBE34-703 Troubleshooting by Indication on the Centralized remote control 4. Troubleshooting by Indication on the Centralized remote control 4.1 “UE ” Malfunction of Transmission between Centralized remote control and Indoor Unit remote control Display UE Applicable Models AII indoor unit models Centralized remote control Method of Malfunction Detection Microcomputer checks if transmission between indoor unit and central remote control is normal.
Troubleshooting by Indication on the Centralized remote control 4.2 SiENBE34-703 “M1 ” PC Board Defect remote control Display M1 Applicable Models Centralized remote control Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes ! Defect of central remote control PC board Troubleshooting Replace the central remote control PC board.
SiENBE34-703 4.
Troubleshooting by Indication on the Centralized remote control 4.
SiENBE34-703 Troubleshooting by Indication on the Centralized remote control Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is the wiring adapter for electrical appendices connected? Cannot be used in combination with a wiring adapter for electrical appendices. Remove the wiring adapter for electrical appendices and reset the power supply for all optional controllers for centralized control simultaneously.
Troubleshooting by Indication on the Centralized remote control 4.5 SiENBE34-703 “MC ” Address Duplication, Improper Setting remote control Display MC Applicable Models Centralized remote control Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes ! Address duplication of centralized remote control Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
SiENBE34-703 Troubleshooting by Indication on the Unified ON/OFF Control 5. Troubleshooting by Indication on the Unified ON/ OFF Control 5.
Troubleshooting by Indication on the Unified ON/OFF Control SiENBE34-703 Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Is a malfunction code displayed on the remote control? YES Diagnose the cause with the air conditioner's failure diagnosis manual. NO Has a once connected indoor unit been removed or its address changed? YES Reset power supply for all optional controllers for centralized control simultaneously.
SiENBE34-703 5.
Troubleshooting by Indication on the Unified ON/OFF Control SiENBE34-703 Troubleshooting Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred. Caution Has a once connected optional controller for centralized control been disconnected or its address changed? YES Reset power supply simultaneously for all optional controllers for centralized control.
SiENBE34-703 Troubleshooting by Indication on the Unified ON/OFF Control 2A Is the wiring adapter for electrical appendices connected? YES NO Is a schedule timer connected? YES Is a data station connected? NO YES NO Is a parallel interface connected? YES NO Is the schedule timer's individual/combined connector connected? NO Are there two or more optional controls for centralized control connected with the connector for setting master control? YES NO Reset the power supply for all optional
Troubleshooting by Indication on the Unified ON/OFF Control 5.3 SiENBE34-703 Display “Under Host Computer Integrate Control” Blinks (Repeats Double Blink) remote control Display “under host computer integrated control” (Repeats double blink) Applicable Models Unified ON/OFF controller Method of Malfunction Detection Malfunction Decision Conditions Supposed Causes ! Central control address (group No.) is not set for indoor unit.
SiENBE34-703 Troubleshooting by Indication on the Unified ON/OFF Control [CHECK 1] Check for causes of rise in high pressure Referring to the Fault Tree Analysis (FTA) shown below, probe the faulty points. Local pressure rise [In cooling] If the outdoor unit electronic expansion valve is throttled: (See *1.) Rise in high pressure High pipe resistance Faulty outdoor unit electronic expansion valve A temperature difference in excess of 10°C between the inlet and the outlet is deemed to be abnormal.
Troubleshooting by Indication on the Unified ON/OFF Control SiENBE34-703 [CHECK 2] Check for causes of drop in low pressure Referring to the Fault Tree Analysis (FTA) shown below, probe the faulty points. [In cooling] (See *1.) Faulty compressor Faulty low capacity pressure control control Abnormally low low-pressure (Low evaporating temperature) [In both cooling and heating] (See *2.) [In cooling] If the indoor unit electronic expansion valve is throttled too much: (See *3.
SiENBE34-703 Troubleshooting by Indication on the Unified ON/OFF Control [CHECK 3] Check for Fan Motor Connector (1) Turn the power supply off. (2) With the fan motor connector on motor side disconnected, measure the resistance between each pin, then make sure that the resistance is more than the value mentioned in the following table.
Troubleshooting by Indication on the Unified ON/OFF Control 196 SiENBE34-703 Troubleshooting
SiENBE34-703 Part 8 Appendix 1. Piping Diagrams..................................................................................198 1.1 Outdoor Unit .........................................................................................198 1.2 Indoor Unit............................................................................................199 2. Wiring Diagrams..................................................................................202 2.1 Outdoor Unit ...................................
Filter 198 Accumulator Filter Compressor Solenoid valve Filter Low pressure sensor Pressure regulating valve High pressure switch Capillary tube Electronic expansion valve Stop valve (With service port on field piping side Ø 7.9mm flare connection) Capillary tube Service port Double pipe exchanger Filter Filter Service port Solenoid valve High pressure sensor Four way valve Heat exchanger 3D052628 1.1 Oil separator Electronic expansion valve Piping Diagrams SiENBE34-703 1.
SiENBE34-703 1.2 Piping Diagrams Indoor Unit FXCQ, FXFQ, FXZQ, FXKQ, FXSQ, FXMQ, FXHQ, FXAQ, FXLQ, FXNQ Gas piping connection port Heat exchanger Flare connection : ø15.9 or less Attached piping : Above ø19.
Piping Diagrams SiENBE34-703 FXDQ Gas side Liquid side Electronic expansion valve Filter Filter Fan Indoor heat exchanger 4D043864H ! Refrigerant pipe connection port diameters Model FXDQ20 / 25 / 32 / 40 / 50 FXDQ63 200 Gas φ12.7 φ15.9 (mm) Liquid φ6.4 φ9.
SiENBE34-703 Piping Diagrams FXUQ + BEVQ Indoor Unit Indoor heat exchanger Filter Field piping ø 9.5C1220T-0 To outdoor unit Field piping ø 15.
202 HEAT AIR CONTROL Notes 1. This wiring diagram is applied only to the outdoor unit. 2. :Field wiring. 3. :Terminal strip : Movable connector , : Fixed connector : Terminal : Protective earth (Screw) : Noiseless earth 4. When using the option adapter, refer to the installation manual. 5. Refer to “Operation caution label” (on back of front plate) how to use BS1~5 and DS1 • 2 switch . 6. When operating, don’t shortcircuit for protection device (S1PH). 7.
Appendix Main Switch 2 Wires Cable (Power line) Fuse Switch 2 Wires Cable (Power line) 2 Wires Cable (Transmisson line) Fuse Switch 2 Wires Cable (Power line) Fuse Switch INDOOR UNITS 2 Wires Cable (Transmisson line) OUTDOOR UNITS Fuse Switch 2 Wires Cable (Transmisson line) 2 Wires Cable (Power line) Fuse Switch 2 Wires Cable (Transmisson line) 3D057919 6) Unit shall be grounded in compliance with the applicable local and national codes.
Wiring Diagrams 2.
SiENBE34-703 Wiring Diagrams FXCQ40 / 50 / 80 / 125M8V3 Appendix 205
Wiring Diagrams SiENBE34-703 FXFQ25 / 32 / 40 / 50 / 63 / 80 / 100 / 125P7VE 206 Appendix
SiENBE34-703 Wiring Diagrams FXZQ20 / 25 / 32 / 40 / 50M8V1 Appendix 207
208 Transformer (220-240 V/22 V) Terminal block (Power) Terminal block (Control) Electronic expansion Fuse (훾, 5A, 250V) Light emitting diodo. (Servicel monitor green) Magnetic relay(M1F) Notes 1. : Terminal block, , : Connector, : Terminal. 2. : Field wiring. 3. In case using central remote control, connect it to the unit in accordance with the attached instruction manual. 4.
Appendix : Terminal block POWER SUPPLY 6. Symbols show as follows: RED: red, BLK: Black, WHT: white, YLW: yellow, PRP: purple, GRY: gray , BLU: blue, PNK: pink, ORG: orange, GRN: green. , : Connector, CONTROL BOX 2. : Field wiring. 3. In case using central remote control, connect it to the unit in accordance with the attched installation manual. 4. Remote control model varies according to the combination system, confirm engineering materials and catalogs, etc. Before connecting 5.
Wiring Diagrams SiENBE34-703 FXDQ20 / 25M8V3 210 Appendix
SiENBE34-703 Wiring Diagrams FXSQ20 / 25 / 32 / 40 / 50 / 63 / 80 / 100 / 125M8V3 Appendix 211
212 Selector switch (Main/Sub) Thermistor (Air) Connector for optional parts Connector (Wiring adapter for electrical appendices) Thermistor (Air) Thermistor (Coil) Float switch Transformer (220-240V/22 V) Terminal block (Power) Terminal block (Control) Electronic expansion valve Optional parts Motor (Drain pump) Wired remote control Note-5 POWER SUPPLY Notes 1. : Terminal block, , : Connector, : Terminal. 2. : Field wiring. 3.
Appendix Light emitting diode (ON-RED) Light emitting diode (TIMER-GREEN) INDOOR UNIT Printed circuit board Capacitor (M1F) Fuse (훾, 5A, 250V) Light emitting diode.
214 INDOOR UNIT Connector (Group control adapter) Selector switch (Main/sub) (Wireless adress set) Connector for optional parts Connector (Float switch) Wired remote control Thermistor (Air) 6. 7. 8. 2. 3. 4. 5.
Appendix : Connector, : Terminal Terminal block (Control) Electronic expansion valve Wired remote control Thermistor (Air) Selector switch (Main/sub) Connector for optional parts Connector (Wiring adapter for electrical appendices) 2. : Field wiring 3. In case using central remote control, connect it to the unit in accordance with the attached instruction manual. 4. When connecting the input wires from outside, forced OFF or ON/OFF control operation can be selected by remote control.
216 Indoor unit Wired remote control Printed circuit board Thermistor (Air) Printed circuit board Selector switch (Main/sub) Transformer (220-240V/16V) Receiver/display unit (attached to wireless remote control) Capacitor (M1F) Light emitting diode. Printed circuit board (Service monitor green) Printed circuit board Light emitting diode. Push button (ON/OFF) (Service monitor green) Light emitting diode Motor (Swing flap) (On-red) Motor (Indoor fan) Light emitting diode.
SiENBE34-703 Wiring Diagrams BEVQ71MA / 100MA / 125MAVE BEV UNIT Printed circuit board ASSY Power supply Printed circuit board ASSY (220-240V/16V) Fuse (훾, 10A, 250V Light emitting diode. (Service monitor green) Thermistor (Gas) Selector switch (M/S) Terminal strip (Power) Terminal strip (Transmission) Electronic expansion valve POWER SUPPLY TO INDOOR UNIT Noise filter Notes : Connector, 1. : Terminal block, 2. : Field wiring. TO OUTDOOR 3. This wiring diagram only shows the BEV unit.
Option List SiENBE34-703 3. Option List 3.1 Option List of Controllers Operation Control System Optional Accessories No.
SiENBE34-703 Option List Building management system 1 1-1 1-2 Part name intelligent Touch Controller No. basic Option 2 8 9-1 9-2 Contact/Analog signal 5 7 P.P.D. DCS002C51 • P.P.D.: Power Proportional Distribution function Web DCS004A51 • Monitors and controls the air conditioning system using the Internet and Web browser application on a PC. 13 KJB411A 128 units DAM602B52 256 units DAM602B51 512 units DAM602B51x2 768 units DAM602B51x3 • Wall embedded switch box.
Option List 3.2 SiENBE34-703 Option List of Outdoor Unit RXYSQ4 / 5 / 6P Optional accessories Cool/Heat Selector Distributive Piping Fixing box Refnet header Refnet joint RXYSQ4P7Y1B RXYSQ5P7Y1B RXYSQ6P7Y1B KRC19-26A KJB111A KHRP26M22H, KHRP26M33H (MAX. 4 branch) (MAX.
SiENBE34-703 Appendix Option List 221
Example of Connection SiENBE34-703 4.
SiENBE34-703 fnet joint Example of Connection Branch with refnet joint and refnet header EFNET joint (A-G) Outdoor unit REFNET joint (A • B) F H1 P G m n 6 H1 Refnet header c 7 H2 Outdoor unit i a g Branch with refnet header 1 8 a A B b j k 7 d e 2 (1-8) g f 3 4 Refnet header 8 h 5 H1 H2 b c 1 6 d 2 Indoor units (1-8) e 3 g f 4 5 6 8 Indoor units (1-8) oor and indoor units ≤ 150m f + g + p ≤ 150m Example unit 6: a + b + h ≤ 120m, unit 8: a + i + k ≤ 150m i
Example of Connection 224 SiENBE34-703 Appendix
SiBE34-703 Thermistor Resistance / Temperature Characteristics 5. Thermistor Resistance / Temperature Characteristics Indoor unit Outdoor unit for fin thermistor Appendix R1T TºC -10 -8 -6 -4 -2 0.0 88.0 79.1 71.1 0 2 4 6 8 64.1 57.8 52.3 47.3 42.9 10 12 14 16 18 38.9 35.3 32.1 29.2 26.6 20 22 24 26 28 24.3 22.2 20.3 18.5 17.0 30 32 34 36 38 15.6 14.2 13.1 12.0 11.1 40 42 44 46 48 10.3 9.5 8.8 8.2 7.6 50 52 54 56 58 7.0 6.7 6.0 5.5 5.2 60 62 64 66 68 4.79 4.46 4.15 3.87 3.
Thermistor Resistance / Temperature Characteristics SiBE34-703 Outdoor Unit Thermistors for Discharge Pipe (R2T) T°C 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 226 0.0 640.44 609.31 579.96 552.00 525.63 500.66 477.01 454.60 433.37 413.24 394.16 376.05 358.88 342.58 327.10 312.41 298.45 285.18 272.58 260.60 249.00 238.36 228.05 218.24 208.90 200.00 191.53 183.46 175.77 168.44 161.45 154.79 148.43 142.
SiBE34-703 Pressure Sensor 6. Pressure Sensor Detected Pressure PH = 1.38V-0.69 PL = 0.57V-0.
Method of Replacing the Inverter’s Power Transistors Modules SiBE34-703 7. Method of Replacing the Inverter’s Power Transistors Modules Checking failures in power semiconductors mounted on inverter PC board Check the power semiconductors mounted on the inverter PC board by the use of a multiple tester. 1 Multiple tester : Prepare the digital type of multiple tester with diode check function. 1 Turn OFF the power supply.
SiBE34-703 Method of Replacing the Inverter’s Power Transistors Modules Power module checking When using the digital type of multiple tester, make measurement in diode check mode. Tester terminal + - C+ U V Criterion Remark Not less than 0.3V (including ∞)* It may take time to determine the voltage due to capacitor charge or else. W U C- Not less than 0.3V (including ∞)* C+ 0.3 to 0.7V (including ∞)* U 0.3 to 0.
Method of Replacing the Inverter’s Power Transistors Modules 230 SiBE34-703 Appendix
SiENBE34-703 Part 9 Precautions for New Refrigerant (R-410A) 1. Precautions for New Refrigerant (R-410A) .........................................232 1.1 Outline ..................................................................................................232 1.2 Refrigerant Cylinders............................................................................234 1.3 Service Tools........................................................................................
Precautions for New Refrigerant (R-410A) SiENBE34-703 1. Precautions for New Refrigerant (R-410A) 1.1 Outline 1.1.1 About Refrigerant R-410A ! Characteristics of new refrigerant, R-410A 1. Performance Almost the same performance as R-22 and R-407C 2. Pressure Working pressure is approx. 1.4 times more than R-22 and R-407C. 3. Refrigerant composition Few problems in composition control, since it is a Quasi-azeotropic mixture refrigerant.
SiENBE34-703 Precautions for New Refrigerant (R-410A) ! Thermodynamic characteristic of R-410A Temperature (°C) Steam pressure (kPa) Liquid Vapor Precautions for New Refrigerant (R-410A) Density (kg/m3 ) Liquid Vapor Specific heat at constant pressure (kJ/kgK) Liquid Vapor Specific enthalpy (kJ/kg) Liquid Vapor Specific entropy (kJ/KgK) Liquid Vapor 233
Precautions for New Refrigerant (R-410A) 1.2 SiENBE34-703 Refrigerant Cylinders ! Cylinder specifications 2 The cylinder is painted refrigerant color (pink). 2 The cylinder valve is equipped with a siphon tube. Siphon tube Cylinder Refrigerant can be charged in liquid state with cylinder in upright position. Caution: Do not lay cylinder on its side during charging, since it cause refrigerant in gas state to enter the system.
SiENBE34-703 1.3 Precautions for New Refrigerant (R-410A) Service Tools R-410A is used under higher working pressure, compared to previous refrigerants (R-22,R-407C). Furthermore, the refrigerating machine oil has been changed from Suniso oil to Ether oil, and if oil mixing is occurred, sludge results in the refrigerants and causes other problems. Therefore, gauge manifolds and charge hoses that are used with a previous refrigerant (R-22,R-407C) can not be used for products that use new refrigerants.
Precautions for New Refrigerant (R-410A) SiENBE34-703 1. Flaring tool Flare gauge ! Specifications 2 Dimension A Unit:mm Nominal size A +0 -0.4 Tube O.D. Do Class-2 (R-410A) Class-1 (Conventional) 6.35 9.1 9.0 3/8 9.52 13.2 13.0 1/2 12.70 16.6 16.2 5/8 15.88 19.7 19.4 3/4 19.05 24.0 23.3 1/4 ! Differences 2 Change of dimension A Dimension A For class-1: R-407C For class-2: R-410A Conventional flaring tools can be used when the work process is changed.
SiENBE34-703 Precautions for New Refrigerant (R-410A) 2. Torque wrench ! Specifications 2 Dimension B Nominal size 1/2 5/8 Unit:mm Class-1 24 27 Class-2 26 29 Previous 24 27 No change in tightening torque No change in pipes of other sizes ! Differences 2 Change of dimension B Only 1/2", 5/8" are extended For class-1: R-407C For class-2: R-410A Dimension B 3.
Precautions for New Refrigerant (R-410A) SiENBE34-703 4. Leak tester ! Specifications 2 Hydrogen detecting type, etc. 2 Applicable refrigerants R-410A, R-407C, R-404A, R-507A, R-134a, etc. ! Differences 2 Previous testers detected chlorine. Since HFCs do not contain chlorine, new tester detects hydrogen. 5. Refrigerant oil (Air compal) ! Specifications 2 Contains synthetic oil, therefore it can be used for piping work of every refrigerant cycle.
SiENBE34-703 Precautions for New Refrigerant (R-410A) 2 Temperature scale indicates the relationship between pressure and temperature in gas saturated state. ! Differences 2 Change in pressure 2 Change in service port diameter 7. Charge hose for R-410A (Hose with ball valve) ! 2 2 2 Specifications Working pressure 5.08 MPa (51.8 kg/cm2) Rupture pressure 25.4 MPa (259 kg/cm2) Available with and without hand-operate valve that prevents refrigerant from outflow.
Precautions for New Refrigerant (R-410A) SiENBE34-703 9. Weigher for refrigerant charge ! Specifications 2 High accuracy TA101A (for 10-kg cylinder) = ± 2g TA101B (for 20-kg cylinder) = ± 5g 2 Equipped with pressure-resistant sight glass to check liquid refrigerant charging. 2 A manifold with separate ports for HFCs and previous refrigerants is equipped as standard accessories. ! Differences 2 Measurement is based on weight to prevent change of mixing ratio during charging. 10.
SiENBE34-703 Part 10 Removal Procedure 1. RXYSQ4 · 5 · 6 P7Y1B .......................................................................240 1.1 Procedure to Remove Outside Panels .................................................240 1.2 Procedure to Remove Propeller Fan and Fan Motor ...........................243 1.3 Procedure to Remove Compressor......................................................
RXYSQ4 · 5 · 6 P7Y1B SiENBE34-703 1. RXYSQ4 · 5 · 6 P7Y1B 1.1 Procedure to Remove Outside Panels Procedure Remove eight screws of the top panel. 2 Remove one screw of the front panel (2), and then remove the panel after pushing it downward to release the hook. 3 To remove the front panel for piping cover, remove its one screw. 4 To remove the side panel for piping cover, remove four screws of the side panel.
SiENBE34-703 Procedure Step 6 RXYSQ4 · 5 · 6 P7Y1B Remove the discharge grill after removing its four screws and releasing its four hooks. Front panel (1) Points Hook Discharge grill ! On the rear side of the front panel (1), a reinforce plate is attached. Be careful not to lose it while removing the front panel (1). 7 Remove the front panel (1) after removing its seven screws and pushing it upward.
RXYSQ4 · 5 · 6 P7Y1B Procedure Step 8 Removing heat exchanger cover Remove the heat exchanger cover after releasing its three hooks with a minus driver. 9 Remove the ambient air temperature thermistor after pulling it to the near side and sliding to the right. 10 The figure in the right is of rear side view.
SiENBE34-703 1.2 RXYSQ4 · 5 · 6 P7Y1B Procedure to Remove Propeller Fan and Fan Motor Procedure Warning Be sure to commence the disassembling work after 10 minutes or more elapsed from all power supplies have been turned off. Procedure Step Front panel (1) Points Preliminary preparation ! Remove the discharge grill, front panel and front panel for piping cover, according to the "Procedure to Remove Outside Panels". Discharge grill 1 Remove the nuts with a washer, which fixing the propeller fan.
RXYSQ4 · 5 · 6 P7Y1B SiENBE34-703 Procedure Step Points Lead wire for fan motor 2 Remove the clamp material. 3 Remove the four fixing screws for fan motor and then remove the fan motor. Earth wire Fan motor ! Pull off the connector while supporting its body and pushing the engaging click, without pulling its lead wires.
SiENBE34-703 1.3 RXYSQ4 · 5 · 6 P7Y1B Procedure to Remove Compressor Procedure Warning Be sure to commence the disassembling work after 10 minutes or more elapsed from all power supplies have been turned off. Procedure Step ! Remove the outside panels, electrical component, and compressor fixing panel, according to the "Procedure to Remove Outside Panels" Points Sound insulation for the terminal cover 1. Pull off the lead wire of compressor.
RXYSQ4 · 5 · 6 P7Y1B SiENBE34-703 Procedure Step 4 Remove the sound insulation for the compressor. 5 Remove the crankcase heater under the compressor. Points Pull the spring to trip the catch. 6 248 Remove the three fixing bolts of the compressor. ! You can see the far side fixing bolts when the bottom discharge grill is removed. Remove the bolt (s) in view first.
SiENBE34-703 Step ! Make sure that there is no refrigerant gas left within the refrigerant circuit system before performing the operation 7 Cut off the suction pipe, discharge pipe and unloader pipe of compressor with a pipe cutter (three places). RXYSQ4 · 5 · 6 P7Y1B Procedure Points ! The cutting part is in the compressor side relative to the brazing part.
RXYSQ4 · 5 · 6 P7Y1B 250 SiENBE34-703 Removal Procedure
SiENBE34-703 Index A A0 .........................................................................122 A1 .........................................................................123 A3 .........................................................................124 A6 .........................................................................126 A7 .........................................................................127 A9 .........................................................................
SiENBE34-703 Malfunction of Low Pressure Sensor ...................156 Malfunction of Moving Part of Electronic Expansion Valve (Y1E) .................................129 Malfunction of Moving Part of Electronic Expansion Valve (Y1E, Y3E) ........................145 Malfunction of Outdoor Unit Fan Motor ................144 Malfunction of PC Board ......................................157 Malfunction of Subcooling Heat Exchanger Gas Pipe Thermistor (R4T) ...........................
SiENBE34-703 Drawings & Flow Charts A abnormal discharge pipe temperature .................147 actuation of high pressure switch .........................139 actuation of low pressure sensor .........................141 address duplication of central remote control ......176 address duplication, improper setting ..................186 C centralized control group no. setting ......................80 brc1c type ........................................................80 brc4c type ..........................
SiENBE34-703 malfunction of transmission between optional controllers for centralized control ..................183 malfunction of transmission between remote control and indoor unit ..................................171 method of replacing the inverter’s power transistors modules .......................................228 O operation lamp blinks ...........................................187 operation mode ......................................................
Daikin Europe N.V. is approved by LRQA for its Quality Management System in accordance with the ISO9001 standard. ISO9001 pertains to quality assurance regarding design, development, manufacturing as well as to services related to the product. ISO14001 assures an effective environmental management system in order to help protect human health and the environment from the potential impact of our activities, products and services and to assist in maintaining and improving the quality of the environment.
