Service manual

ManualsBrandsCOMFORT-AIRE ManualsRemote ControlSMH09

SERVICE

SMA/SMH09/12SA-0

SMA/SMH18/24SA-1

Single Zone Ductless

Mini-Split Systems

A/C and Heat Pumps

MANUALNeText

Summary of content (48 pages)

PAGE 1
SERVICE MANUALNeText SMA/SMH09/12SA-0 SMA/SMH18/24SA-1 Single Zone Ductless Mini-Split Systems A/C and Heat Pumps
PAGE 2
Contents 1 Precaution ....................................................................................................................4 1.1 Safety Precaution...................................................................................................................................4 1.2 Warning ..................................................................................................................................................4 2 3 4 5 6 7 8 Function ...............................
PAGE 3
Content 10.7 Over current protection of the compressor occurs 4 times................................................................ 45 10.8 EEROM error...................................................................................................................................... 45 10.9 Outdoor unit protects.......................................................................................................................... 46 10.10 Indoor unit communication error. .............................
PAGE 4
Service manual 1 Precaution 1.1 Safety Precaution To prevent injury to the user, other people, or property damage, the following instructions must be followed. Incorrect operation due to ignoring instruction will cause harm or damage. Before servicing unit, be sure to read this service manual. 1.2 Warning Installation Do not use a defective or underrated circuit breaker. Use this appliance on a dedicated circuit. There is risk of fire or electric shock.
PAGE 5
Service manual Do not place anything on the power cable. There is risk of fire or electric shock. Do not touch or operate the product with wet hands. There is risk of fire or electric shock. Do not allow water to run into electric parts. It may cause fire, failure of the product, or electric shock. Do not store or use flammable gas or combustible near the product. There is risk of fire or failure of product. Do not use the product in a tightly closed space for a long time.
PAGE 6
Service manual the neighborhoods. It may cause a problem for your neighbors. Use two or more people to lift and transport the product. Avoid personal injury. Do not install the product where it will be exposed to sea wind (salt spray) directly. It may cause corrosion on the product. Corrosion, particularly on the condenser and evaporator fins, could cause product malfunction or inefficient operation. Operational Do not expose the skin directly to cool air for long periods of time.
PAGE 7
Service manual 2 Function Indoor unit 20. Turbo(for 9K and 12K) 1. Operation ON/OFF by remote controller 2. Sensing by room temperature This function enables the unit to reach the preset temperature in the shortest time under cooling mode. Outdoor unit Room temperature sensor. Pipe temperature 1. Power relay control sensor. 3. Room temperature control Maintain the room temperature in accordance with The unit has 3 mins delay between continuously ON/OFF operations. 2.
PAGE 8
Service manual 3 Dimension Indoor unit Dimension W H D 9K 32.1 11.0 7.7 12K 35.7 11.3 9.3 18K 49.2 12.8 9.1 24K 49.2 12.8 9.1 Mode Heat Controller, Inc.
PAGE 9
Service manual outdoor unit Dimension W H D L1 L2 9K 30.7 21.3 9.8 21.6 10.5 12K 29.9 23.2 11.2 20.9 11.4 18K 24K 33.3 35.2 27.4 33.9 13.2 13.0 22.0 23.2 13.2 13.1 Mode Heat Controller, Inc.
PAGE 10
Service manual 4 Specification Model Ph-V-Hz Btu/h W A Btu/w.h Btu/h W A W/W A A Power supply Cooling Heating Capacity Input Rated current SEER Capacity Input Rated current HSPF Max.
PAGE 11
Service manual Model Power supply Cooling Heating Ph-V-Hz Btu/h W A Btu/w.h Btu/h W A W/W A A Capacity Input Rated current SEER Capacity Input Rated current COP Max.
PAGE 12
Service manual Model Power supply Cooling Heating Ph-V-Hz Btu/h W A Btu/w.h Btu/h W A W/W A A Capacity Input Rated current SEER Capacity Input Rated current HSPF Max.
PAGE 13
Service manual W uF r/min SMA24SA-1 1, 208/230V~, 60Hz 24000 2000 8.8 13 —— —— —— —— 14 34.8 A PA200X2CS-3MUU ROTARY TOSHIBA 19820/20130 2000/1980W 9.70/8.75A 34.8 A UP3SE0396-T39 50 750 YDK50-4B WELLING 82/69/58 3 1260/1100/990 680/600/550 47/44/42 YDK100-6EB WELLING 160 4 740 CFM dB(A) oz PSIG in ft ft 1475 59 84.7 650 Ф3/8/Ф5/8 33 16 Model Ph-V-Hz Btu/h W A Btu/w.h Btu/h W A W/W A A Power supply Cooling Heating Capacity Input Rated current SEER Capacity Input Rated current HSPF Max.
PAGE 14
Service manual 5 Refrigerant cycle diagram Cooling only indoor unit outdoor uni Heat pump mode Heat Controller, Inc.
PAGE 15
Service manual 6 Operation limits Cooling operation Outdoor unit air temp ºC (ºF) DBT N(113) (104) (95) (86) (77) (68) (41) (50) (59) (68) (77) (86) (95) (104) Indoor air temp. ºC (ºF) DBT Note: The chart is the result from the continuous operation under constant air temperature conditions. However, excludes the initial pull-down stage.
PAGE 16
Service manual 7 Wiring diagram SMA09SA-0 Indoor unit: TO O UTDOOR U NIT STEP MOTOR 1 2 3 4 OUTDOOR UNIT INDOOR U NIT 5 INDOOR MOTOR 5 CN 3 CN6 JXZ_G1 ANION GENERATOR CN8(9) CONTROLLER BOARD CN5 WIRING DIAGRAM (INDOOR UNIT) Y/G ON SOME MODELS G CN 2 CN1 10 PI PE TEMPERATURE SENSOR ROOM TEMPERATURE SENSOR DISPLAY BOARD outdoor unit: XT1 P2 G Y/G 3 4 WHITE BLACK RELA Y RE D CN3 CT1 N L CN9 R 1 2 WH ITE WH ITE RED RED WHITE 1 CA P1 CN4 FAN2 M COMP S G BL UE
PAGE 17
Service manual SMH09SA-0 Indoor unit: TO O UTDOOR U NIT STEP MOTOR 1 2 3 4 OUTDOOR UNIT INDOOR U NIT 5 INDOOR MOTOR 5 CN 3 WIRING DIAGRAM (INDOOR UNIT) CN6 JXZ_G1 CONTROLLER BOARD CN5 ANION GENERATOR CN8(9) Y/G ON SOME MODELS G CN 2 CN1 10 PI PE TEMPERATURE SENSOR ROOM TEMPERATURE SENSOR DISPLAY BOARD outdoor unit: R O T A S NR E O D S N ON E CS WIRING DIAGRAM BROWN BLU E BLA CK RED CN2 G G XT 1 P2 P1 (OUTDOOR UNIT) TO INDOOR UN IT Y/G CN1 Y/G R EL AY FS1 C N3 RE D CN6
PAGE 18
Service manual SMA12SA-0 Indoor unit: TO OUT DOOR U NIT STEP MOTOR1 INDOOR MOTO R 1 2 3 4 OUTDOOR UNIT IN DOOR U NIT STEP MOTOR2 5 5 5 WIRING DIAGRAM (INDOOR UNIT) 3 CN3 JXZ_G1 CN 6 SWITCH BOARD CN 7 CONTROLLER BO AR D CN5 CN1 CN2 10 PIPE TEMPERATURE SENSOR ROOM TEMPERATURE SENSOR DISPLAY BOARD outdoor unit: XT1 P2 Y/G G Y/G 3 4 WHITE BLACK RELA Y RE D CN3 CT1 N L CN9 R 1 2 WH ITE WH ITE RED RED WHITE 1 CA P1 CN4 FAN2 M COMP S G BL UE Y/G BLACK C P OWER
PAGE 19
Service manual SMH12SA-0 Indoor unit: TO OUT DOOR U NIT STEP MOTOR1 INDOOR MOTO R 1 2 3 4 OUTDOOR UNIT IN DOOR U NIT STEP MOTOR2 5 5 5 WIRING DIAGRAM (INDOOR UNIT) 3 CN3 JXZ_G1 CN 6 SWITCH BOARD CN 7 CONTROLLER BO AR D CN5 CN1 CN2 10 PIPE TEMPERATURE SENSOR ROOM TEMPERATURE SENSOR DISPLAY BOARD outdoor unit: R O T A S NR E O D S N ON E CS WIRING DIAGRAM BROWN BLU E BLA CK RED CN2 G G XT 1 (OUTDOOR UNIT) P2 P1 TO INDOOR UN IT Y/G CN1 Y/G R EL AY FS1 C N3 RE D CN6 CN5 L
PAGE 20
Service manual This page intentionally blank. Heat Controller, Inc.
PAGE 21
Service manual SMA18SA-1, SMA24SA-1 Indoor unit: Outdoor unit R ED CAP2 KM1 M FA N2 BLACK RE D RED BLU E 1 W HITE R ED C 2 RED Y /G R BL UE RE D 1 XT2 CN 1 R ED BL ACK CT CN 8 RED RED UNIT1 WH ITE CN 5 CN 3 CN 6 FU SE 3.1 5A/ 250 V CN 4 CAP1 2 BLACK BLAC K XT 1 BLA CK Y/G RED Y/G 1 2(N ) S TO I NDO OR UNI T L (OUTDOOR UNIT) S COMP B LACK TRANS1 WIRING DIAGRAM N POW ER S UPPLY Heat Controller, Inc.
PAGE 22
Service manual SMH18SA-1, SMH24SA-1 Indoor unit: Outdoor unit VALVE M FA N2 R ED CAP2 KM1 BLACK RE D RED BLU E 1 C 2 RED TRANS1 W HITE R ED B LUE B LUE Y /G R RT3 BL UE XP1 XS1 BLACK XT2 R ED CN 1 BLAC K CN 8 2 CAP1 CN 3 CN 6 FU SE 3.1 5A/ 250 V CN 4 BLACK BLACK RED RED CT UNIT1 WH ITE CN 5 CN 9 1 CN 2 CN 11 XT 1 BLA CK Y/G RED Y/G 1 2(N ) S TO I NDO OR UNI T L (OUTDOOR UNIT) S COMP B LACK WIRING DIAGRAM N POW ER S UPPLY Heat Controller, Inc.
PAGE 23
Service manual 8 Installation details 8.1 Wrench torque sheet for installation Outside diameter mm φ6.35 φ9.52 φ12.7 φ15.88 φ19.05 Torque lb-ft 13 30 40 48 48 inch 1/4 3/8 1/2 5/8 3/4 8.2 Connecting the cables The power connection cable to be made based on the min. circuit ampacity (MCA) on the unit rating label. 8.3 Pipe length and the elevation Capacity Standard length Pipe size ft Btu/h 7k~12K 16K~28K 30K~36K GAS 3/8’’ (φ9.52) 1/2’’ (φ12.7) 1/2’’ (φ12.7) 5/8’’ (φ15.88) 5/8’’ (φ15.
PAGE 24
Service manual In case B is more than 16 ft. Caution: Capacity is based on standard length. Maximum allowance length is based of reliability. Oil trap should be installed every 16 to 25 feet of vertical rise. 8.4 Air purging of the piping and indoor unit Required tools: Hexagonal wrench; adjustable wrench; torque wrenches, wrench to hold the joints and gas leak detector. Note: The air in the indoor unit and in the piping must be purged.
PAGE 25
Service manual ： Procedure： 1. Recheck the piping connections. 2. Open the valve stem of the 2-way valve counterclockwise approximately 90º, wait 10 seconds, and then set it to closed position. Be sure to use a hexagonal wrench to operate the valve stem 3. Check for gas leakage. Check the flare connection for gas leakage 4. Purge the air from the system. 5. Set the 2-way valve to the open position and remove the cap from the 3-way valve’s service port. 6.
PAGE 26
Service manual 8.5 Pumping down (Re-installation) Procedure: 1. Confirm that both the 2-way and 3-way valves are set to the opened position. Remove the valve stem caps and confirm that the valve stems are in the opened position. Be sure to use a hexagonal wrench to operate the valve stems. 2. Operate the unit for 10 to 15 minutes. 3. Stop operation and wait for 3 minutes, then connect the charge set to the service port of the 3-way valve. Connect the charge hose with the push pin to the gas service port.
PAGE 27
Service manual 8.6 Re-air purging (Re-installation) Procedure: 1. Confirm that both the 2-way and 3-way valves are set to the closed position. 2. Connect the charge set and a charging cylinder to the service port of the 3-way valve. 3. Leave the valve on the charging cylinder closed. 4. Air purging. 5. Open the valves on the charging cylinder and the charge set. Purge the air by loosening the flare nut on the 2-way valve approximately 45º for 3 seconds then closing it for 1 minutes; repeat 3 times. 6.
PAGE 28
Service manual 8.7 Balance refrigerant of the 2-way, 3-way valves Procedure: 1. 2. Confirm that both the 2-way and 3-way valves are set to the open position. Connect the charge set to the 3-way valve’s service port. Leave the valve on the charge set closed. Connect the charge hose with the push pin to the service port. 3. Open the valves (Low side) on the charge set and discharge the refrigerant until the gauge indicates 10-15 psig.
PAGE 29
Service manual 8.8 Evacuation Procedure: 1. 2. Connect the vacuum pump to the charge set’s center hose. Evacuate for approximately one hour. Confirm that the gauge needle has moved toward -14 psig (-76 cmHg) [vacuum of 4 mmHg or less]. 3. Close the valve (Low side) on the charge set, turn off the vacuum pump, and confirm that the gauge needle does not move for at least 5 minutes after turning off the vacuum pump. 4. Disconnect the charge hose from the vacuum pump.
PAGE 30
Service manual 8.9 Gas charging Procedure: 1. Connect the charge hose to the charging cylinder. Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder. 2. Purge the air from the charge hose. Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air (be careful of the liquid refrigerant). 3. Open the valves (Low side) on the charge set and charge the system with liquid refrigerant.
PAGE 31
Service manual 9 Electronic function 9.1 Electronic control working environment Input voltage: 175~253V or 100~130V, depending on model Input power frequency: 60Hz Ambient temperature: 19°F to 110°F(heat pump), 64°F to 110°F(cooling only) Indoor fan normal working amp is less than 1A Outdoor fan normal working amp is less than 1.5A Four-way valve normal working amp is less than 1A Swing motor: DC12V Compressor: single-phase power supply. Its normal working amp is less than 15A 9.
PAGE 32
Service manual 9.3 Function Remote receiving Testing and forced running Position set for indoor unit wind vane LED displaying and alarm On or off Timer Protection for the compressor Current protection High temperature protection of indoor heat exchanger at heating mode Auto defrosting and heating recovery at heating mode Anti cold air at heating mode 9.4 Protection 9.4.1 3 minutes delay at restart for compressor. 9.4.2 Sensor protection at open circuit and breaking disconnection 9.4.
PAGE 33
Service manual 9.5 Fan only mode Fan speed is high/mid/low/ Auto 9.6 Cooling mode The 4-way valve is closed at cooling mode. The action of the compressor and the outdoor fan:(T=indoor temperature) 1.8º F Auto fan at cooling mode: 1.8ºF 7.2ºF 9ºF Anti-freezing control to indoor evaporator at cooling mode ( T: evaporator temp. ) Condenser high temperature protection (only for heat pump) Heat Controller, Inc.
PAGE 34
Service manual 9.7 Dehumidifying mode Indoor fan speed at low speed. Protection is same as cooling mode. 9.8 Heating mode 9.8.1 Generally, the 4-way valve is open in heating mode, but it is closed in defrosting mode. 4-way valve must delay 2 minutes compared with compressor if the compressor changed into non-heating mode or turned off. 4-way valve doesn't delay in dehumidifying mode. 9.8.
PAGE 35
Service manual 9.8.5 Anti-cold wind control function at heating mode (T=indoor exchanger temp.) 9.8.6 Auto wind at heating mode (T=indoor temp.) N 3.6ºF 9.8.7 Indoor evaporator high-temperature protection at heating mode (T=indoor exchanger temp.) The louver opens to Standard Angle ANGLHEAT when power is on for the first time 9.9 Defrosting mode(available for heating mode) 9.9.1 Defrosting condition: Defrost starts when either of the following 1&2: 1.
PAGE 36
Service manual 9.9.2 Conditions of defrost ending: Defrosting ends when either of the following: The defrost cycle reaches 10 minutes. T3 is greater than 68º F. 9.9.3 Defrosting Actions Remark: when the evaporator pipe temperature sensor more than TE16, the indoor fan start to run. 9.10 Auto mode 9.10.1 The air conditioner automatically selects one of the following operation modes: cooling, heating or fan only according to the temperature difference between room temperature (TA) and set temperature (TS).
PAGE 37
Service manual mode is set to low and the A/C operates at the DRY mode with a set temp. of 75ºF (24℃ ). 9.11.3 All protections of remote control cooling are available at forced cooling operation 9.11.4 Forced Auto function Select forced auto function with the forced auto button or the switch. In forced auto status the A/C operates at remote control mode with a set temp. of 75ºF (24℃). Manual operation is controlled by touching buttons and divided into force cooling and forced auto mode.
PAGE 38
Service manual 1.8ºF 1.8ºF 9.12.4 Auto: After an hour running under economic mode, the set temp will rise 1.8ºF (1℃ ,), if it is under cooling mode; the set temp will decrease 1.8ºF. If it is in the heating mode, the set temp will increase a similar amount. 9.13 Auto restart function In case of a sudden power failure, this function automatically sets the unit to previous settings before the power failure when power returns 9.14 Turbo mode 9.14.1 For 9K and 12K type only 9.14.
PAGE 39
Service manual 10 Troubleshooting 10.1 Display board For 9K model Operation The indicator flashes once every second after power is on and illuminates when the air conditioner is in operation. Timer indicator: The indicator illuminates then TIMER is set ON. PRE-DEF. indicator (For cooling & heating mode only) The air conditioner starts defrosting automatically if outdoor unit frosts in heating operating. At this time, PRE-DEF. indicator illuminates.
PAGE 40
Service manual For 18 K and 24K model: OPERATI ON AUTO TIMER PRE.-DEF. Operation The indicator flashes once every second after power is on and illuminates when the air conditioner is in operation. Timer indicator: The indicator illuminates then TIMER is set ON. PRE-DEF. indicator (Just for cooling & heating mode and for cooling only type it’s FAN ONLY) The air conditioner starts defrosting automatically if outdoor unit frosts in heating operating. At this time, PRE-DEF. indicator illuminates.
PAGE 41
Service manual 10.2 Troubleshooting For 9K and 12K : Failure phenomenon Indoor fan speed has been out of control for over 1 minute Indoor room temp.
PAGE 42
Service manual 10.3 Diagnostic chart After energizing, no indicator is lighted and the air conditioner can’t be operated. See chart on following page. Heat Controller, Inc.
PAGE 43
Be sure all the wires(including power wires and connection wires) No is OK Yes Change good ones Check if AC 115V (or 208-230V) power supply outputs to outdoor PCB Yes Check if AC 115V (or 208-230V) exists at primary coil of No transformer Yes Outdoor PCB is defective Check if AC 12V and AC 35V (+5%) exist at second coil of transformer in the outdoor PCB Yes No Yes Take off the secondary plug of transformer, and then check if AC 12V and AC 35V (+5%) exist at secondary coil of transformer No Outdoor
PAGE 44
Service manual 10.4 Resetting phenomenon often occurs during operation. (That is automatically entering to the status when power is on.) The reason is that the instantaneous voltage of main chip is less than 4.5V. Check according to the following procedure: 10.5 Indoor fan speed out of control . Just for 9K and 12K type when indoor fan speed has been out of control for over 1 minute Heat Controller, Inc.
PAGE 45
Service manual 10.6 Temperature sensor error. Including the indoor room, indoor evaporator and outdoor condenser temperature sensor. 10.7 Over current protection of the compressor occurs 4 times Over current protection of compressor occurs 4 times 10.8 EEROM error EEROM error, indoor PCB is defective. Heat Controller, Inc.
PAGE 46
Service manual 10.9 Outdoor unit protects Check if the power supply is good No Power supply failure Yes Change outdoor PCB and check if the error is still exit No Outdoor PCB failure Yes Compressor failure 10.10 Indoor unit communication error. Check the if the signal wire is well connection No Connect the signal wire well or change the Yes signal wire if it’s the problem of the wires.
PAGE 47
Service manual 11 Characteristic of temperature sensor Temp.℃ Resistance KΩ Temp.℃ Resistance KΩ Temp.℃ Resistance KΩ -10 62.2756 17 14.6181 44 4.3874 -9 58.7079 18 13.918 45 4.2126 -8 56.3694 19 13.2631 46 4.0459 -7 52.2438 20 12.6431 47 3.8867 -6 49.3161 21 12.0561 48 3.7348 -5 46.5725 22 11.5 49 3.5896 -4 44 23 10.9731 50 3.451 -3 41.5878 24 10.4736 51 3.3185 -2 39.8239 25 10 52 3.1918 -1 37.1988 26 9.5507 53 3.0707 0 35.2024 27 9.1245 54 2.959 1 33.3269 28 8.7198 55 2.8442 2 31.5635 29 8.3357 56 2.
PAGE 48
Design, material, performance data and components subject to change without notice. 1900 Wellworth Ave., Jackson, Michigan 49203 • Ph. 517-787-2100 • Fax 517-787-9341 THE QUALITY LEADER IN CONDITIONING AIR www.heatcontroller.