FILE NO. A10-001 Revised: May, 2010 SERVICE MANUAL SPLIT TYPE INDOOR UNIT RAV-SM2242DT-E RAV-SM2802DT-E RAV-SM2242DT-TR RAV-SM2802DT-TR R410A PRINTED IN JAPAN, Apr.
CONTENTS ORIGINAL INSTRUCTION................................................................................. 3 WARNING INDICATIONS ON THE AIR CONDITIONER UNIT.......................... 5 PRECAUTION FOR SAFETY ............................................................................ 6 NEW REFRIGERANT (R410A) ........................................................................ 11 1. SPECIFICATIONS .................................................................................... 13 1-1.
Original instruction Please read carefully through these instructions that contain important information which complies with the “Machinery” Directive (Directive 2006/42/EC), and ensure that you understand them. Some of the details provided in these instructions differ from the service manual, and the instructions provided here take precedence.
Definition of Protective Gear When the air conditioner is to be transported, installed, maintained, repaired or removed, wear protective gloves and ‘safety’ work clothing. In addition to such normal protective gear, wear the protective gear described below when undertaking the special work detailed in the table below. Failure to wear the proper protective gear is dangerous because you will be more susceptible to injury, burns, electric shocks and other injuries.
Warning Indications on the Air Conditioner Unit [Confirmation of warning label on the main unit] Confirm that labels are indicated on the specified positions If removing the label during parts replace, stick it as the original. Description Warning indication WARNING WARNING ELECTRICAL SHOCK HAZARD Disconnect all remote electric power supplies before servicing. WARNING ELECTRICAL SHOCK HAZARD Disconnect all remote electric power supplies before servicing. WARNING Moving parts.
Precaution for Safety WARNING Before starting to repair the air conditioner, read carefully through the Service Manual, and repair the air conditioner by following its instructions. Only qualified service person (∗1) is allowed to repair the air conditioner. Repair of the air conditioner by unqualified person may give rise to a fire, electric shocks, injury, water leaks and/or other problems.
Execute discharge between terminals. Prohibition Stay on protection Even if the circuit breaker has been set to the OFF position before the service panel is removed and the electrical parts are repaired, you will still risk receiving an electric shock. For this reason, short-circuit the high-voltage capacitor terminals to discharge the voltage before proceeding with the repair work. For details on the short-circuiting procedure, refer to the Service Manual.
Refrigerant Assembly/ Cabling Insulator check Ventilation The refrigerant used by this air conditioner is the R410A. Check the used refrigerant name and use tools and materials of the parts which match with it. For the products which use R410A refrigerant, the refrigerant name is indicated at a position on the outdoor unit where is easy to see. To prevent miss-charging, the route of the service port is changed from one of the former R22.
Once the repair work has been completed, check for refrigerant leaks, and check the insulation resistance and water drainage. Then perform a trial run to check that the air conditioner is running properly. Check after repair Do not operate the unit with the valve closed. After repair work has finished, check there is no trouble. If check is not executed, a fire, electric shock or injury may be caused. For a check, turn off the power breaker.
Explanations given to user • If you have discovered that the fan grille is damaged, do not approach the outdoor unit but set the circuit breaker to the OFF position, and contact a qualified service person to have the repairs done. Do not set the circuit breaker to the ON position until the repairs are completed. Relocation • Only a qualified installer (∗1) or qualified service person (∗1) is allowed to relocate the air conditioner.
New Refrigerant (R410A) This air conditioner adopts a new HFC type refrigerant (R410A) which does not deplete the ozone layer. 1. Safety Caution Concerned to New Refrigerant The pressure of R410A is high 1.6 times of that of the former refrigerant (R22). Accompanied with change of refrigerant, the refrigerating oil has been also changed.
4. Tools 1. Required Tools for R410A Mixing of different types of oil may cause a trouble such as generation of sludge, clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types.
1. SPECIFICATIONS 1-1. Indoor Unit 1-1-1. Concealed Duct High static pressure Type Model Indoor unit RAV-SM2242DT-E RAV-SM2802DT-E Outdoor unit RAV-SM2242AT8-E RAV-SM2802AT8-E Cooling capacity (kW) 20.0 23.0 Heating capacity (kW) 22.4 27.0 Power supply Indoor unit Cooling Outdoor unit (V) Running current 5.25 – 4.81 5.25 – 4.81 (kW) 1.12 1.
1-1-1. Concealed Duct High static pressure Type (Contined) Model Indoor unit RAV-SM2242DT-TR RAV-SM2802DT-TR Outdoor unit RAV-SM2244AT8-E RAV-SM2804AT8-E Cooling capacity (kW) 20.0 23.0 Heating capacity (kW) 22.4 27.0 Power supply Indoor unit Cooling Outdoor unit (V) Running current 5.25 – 4.81 5.25 – 4.81 (kW) 1.12 1.12 Power factor (%) 97 Power supply (V) Power consumption Running current Power consumption Power factor Power consumption Total (A) (A) 9.83 – 9.00 12.
600 Check port 35 370 65 200 or more 200 250 Air discharge port 250 1000 or more 250 * Drain pipe connecting port(V25) 22.2 Gas side 12.7 Liquid side 28.6 Gas side The diameter of connecting gas side on the indoor unit is 22.2, and therefore please use the accessory joint for installation. 12.7 Liquid side Diameter of connecting pipe 46 Taper screw for R1,25.
3. SYSTEMATIC REFRIGERATING CYCLE DIAGRAM 3-1. Indoor Unit RAV-SM2242DT-E, RAV-SM2802DT-E RAV-SM2242DT-TR, RAV-SM2802DT-TR Distributor (Strainer incorporated) Indoor unit TCJ sensor Air heat exchanger TC sensor Refrigerant pipe at liquid side ØB To outdoor unit Refrigerant pipe at gas side ØA Heating Cooling Dimension table Indoor unit SM224, SM280 type Outer diameter of refrigerant pipe Gas side ØA Liquid side ØB 28.6 12.
Motor over heating protection switch 49F – 17 – BLU ORN F2 F3 43F1,43F2 F1 3 Fan Motor Control Relay Fuse for Fan Motor Drain Pump Motor Louver Control Relay DP Drain Control Relay Fan Motor Control Relay Temp sensor RY001 007 RY002 RY005 TC,TCJ Indoor temp sensor Transformer TR TA Running Capacitor 3 196 (20) RC FM1 69 (7) 137 (14) Parts name Fan Motor YEL F1 Static pressure Pa (mmAg) YEL BLU ORN L2 L1 L3 3 3 BLK N R(L) S(N) 7 RED 1 1 3 3 5 5 43F1 7 CN
4-2. Fan Characteristics Current value as a criterion, adjust the air volume value to become within the range of the chart below.] < RAV-SM2242 type > Standard air volume: 3600m³/h 8 7.5 Current of fan motor (A) 7 6.5 6 High static pressure tap (50Hz) Medium static pressure tap (50Hz) 5.5 Low static pressure tap (50Hz) 5 4.
< RAV-SM2802 type > Standard air volume: 4200m³/h 8.5 8 Current of fan motor (A) 7.5 7 High static pressure tap (50Hz) 6.5 Medium static pressure tap (50Hz) 6 Low static pressure tap (50Hz) 5.5 5 4.
n Wire connection change of fan motor This duct is composed of 3 fan motors. To change external static pressure by duct resistance, connect the 3 connectors of the orange lead wires that are connected to the underside of the fan tap changing terminal block to the same number (F1, F2 or F3) terminal. The wires of the fan motor has been connected to (F2) [External static pressure 137Pa (14mmAq)] as factory default.
5. SPECIFICATIONS OF ELECTRICAL PARTS 5-1. Indoor Unit RAV-SM2242DT-E, RAV-SM2802DT-E RAV-SM2242DT-TR, RAV-SM2802DT-TR No.
6. INDOOR CONTROL CIRCUIT 6-1. Indoor Controller Block Diagram RAV-SM2242DT-E, RAV-SM2802DT-E / RAV-SM2242DT-TR, RAV-SM2802DT-TR 6-1-1. Connection of Wired (Simple) Remote Controller Wired (Simple) Master remote controller (Max. 2 units) Display part LCD Function setup Display part LCD CPU Display part LED Power supply circuit A CN2 CPU Key switch *3 Power supply circuit B Network adapter (Option) X Y Function setup CN1 Remote controller communication circuit Network adapter P.C.
6-2. Control Specifications No. Item Outline of specifications 1 When power supply is reset 1) Distinction of outdoor unit When the power supply is reset, the outdoors are distinguished and the control is selected according to the distinguished result. 2 Operation mode selection 1) Based on the operation mode selecting command from the remote controller, the operation mode is selected. Remote controller command STOP Control outline Air conditioner stops.
No. 3 Item Room temp. control Remarks Outline of specifications 1) Adjustment range: Remote controller setup temperature (°C) Wired type COOL HEAT AUTO 18 to 29 18 to 29 18 to 29 2) Using the Item code 06, the setup temperature in heating operation can be corrected. Setup data 0 2 4 6 Setup temp.
No. Item 5 Automatic cooling/ heating control Outline of specifications Remarks 1) The judgment of selecting COOL/HEAT is carried out as shown below. When exceeding +1.5 against Tsh 10 minutes and after thermo.-OFF, heating operation (Thermo. OFF) exchanges to cooling operation. Description in the parentheses shows an example of cooling ON/OFF. Ta (˚C) +1.5 Tsc: Setup temp. in cooling operation Tsh: Setup temp. in heating operation + temp. correction of room temp.
Remarks No. Item Outline of specifications 7 Freeze preventive control (Low temperature release) 1) The cooling operation is performed as follows based on the detected temperature of Tc sensor or Tcj sensor. When [J] zone is detected for 6 minutes (Following figure), the commanded frequency is decreased from the real operation frequency. After then the commanded frequency changes every 30 seconds while operation is performed in [J] zone.
No. Item Outline of specifications 8 High-temp. release control 1) The heating operation is performed as follows based on the detected temperature of Tc sensor or Tcj sensor. • When [M] zone is detected, the commanded frequency is decreased from the real operation frequency. After then the commanded frequency changes every 30 seconds while operation is performed in [M] zone. • In [N] zone, the commanded frequency is held.
No. 12 13 14 Item Outline of specifications Remarks Frequency fixed operation (Test run) Approx. command frequency [S7] Filter sign display 1) The operation time of the indoor fan is calculated, the filter reset signal is sent to the remote controller when the specified time has passed, and it is displayed on LCD. 2) When the filter reset signal has been received from the remote controller, time of the calculation timer is cleared.
No. Item Outline of specifications 15 Save operation (By connected outdoor unit) 1) When selecting [AUTO] mode, the save operation is enabled. 2) Shift (Correct) the setup temperature from input values of the every sensor in the range of not spoiling comfortable ability. 3) The input values mean the room temperature Ta, outside temperature To, air volume, and indoor heat exchanger sensor temperature Tc. Their data for 20 minutes are averaged to calculate the correction value of the setup temperature.
– 30 – Optional power supply Drain pump output Power transformer (Primary side) (AC240V) Power supply AC fan output Filter/Option error input EXCT Outside error input Float SW ∗ Short plug is inserted TA sensor Microcomputer operation LED Power transformer (Secondary side) (AC11V, 14V, 20V) TCJ sensor TC sensor EEPROM DISP CHK ∗1 No function Used for servicing Remote controller inter-unit wire Optional output Remote controller power supply LED 6-3.
6-3-1. Optional Connector Specifications of Indoor P.C. Board Function Ventilation output Option output Outside error input AUTO up/ down grille (∗) Connector No. Pin No.
7. INDOOR UNIT TROUBLESHOOTING 7-1. Summary of Troubleshooting 1. Before troubleshooting 1) Required tools/instruments • + and – screwdrivers, spanners, radio cutting pliers, nippers, push pins for reset switch • Tester, thermometer, pressure gauge, etc. 2) Confirmation points before check a) The following operations are normal. 1. Compressor does not operate.
Main remote controller (RBC-AMT32E) How to read check monitor display <7-segment display> n Confirmation and check Procedure SET TEST When pushing and buttons at the same time for 4 seconds or more, the following display appears. If is displayed, the mode enters in the error log mode. • [01: Order of error log] is displayed in CODE No. • [Error code] is displayed in CHECK. • [Indoor unit address in which an error occurred] is displayed in Unit No..
n Remote controller switch monitoring function This function is available to call the service monitor mode from the remote controller during a test run to acquire temperatures of sensors of the remote controller, indoor unit, and outdoor unit. 2 4 1 CL 3 TEST and buttons simultaneously for at 1. Push least 4 seconds to call the service monitor mode. The service monitor indicator lights up and the header indoor unit number is displayed first. CODE No. is also displayed. 2. Pushing TEMP.
7-1-1.
Check Code List Error mode detected by indoor unit Operation of diagnostic function Check code E03 Cause of operation No communication from remote controller (including wireless) and communication adapter Status of air conditioner Condition Stop Displayed when (Automatic reset) error is detected The serial signal is not output from outdoor unit to indoor unit. • Miswiring of inter-unit wire E04 • Defective serial sending circuit on outdoor P.C.
Error mode detected by outdoor unit The check code has been ramified from 4 series and after The ramified check code is displayed only when both the indoor unit and the outdoor unit are 4 series and after. (Ex. Combination of RAV-SM1404UT-E with RAV-SM2804AT8-E) When the indoor unit is 3 series and before, the conventional check code is displayed. (Ex. Combination of RAV-SM1402BT-E and RAV-SM2804AT8-E: Outdoor unit only is 4 series.
Operation of diagnostic function Check code Indoor unit before 3 series Cause of operation after 4 series Status of air conditioner Condition H03 Current detection circuit error Stop Displayed when error is detected P05 Open phase of 3-phase power supply Stop Displayed when error is detected H03 Judgment and measures 1. Check outdoor P.C. board (MCC-1596). (AC current detection circuit) 1. Check open phase of 3-phase power supply. 2.
Error mode detected by remote controller or central controller (TCC-LINK) Operation of diagnostic function Check code Cause of operation Judgment and measures Status of air conditioner Condition Power supply error of remote controller, Indoor EEPROM error 1. Check remote controller inter-unit wiring. Not displayed at all (Operation on remote controller is impossible.) No communication with master indoor unit • Remote controller wiring is not correct. • Power of indoor unit is not turned on. 2.
7-1-2. Diagnostic Procedure for Each Check Code (Indoor Unit) Check code [E01 error] Is inter-unit cable of A and B normal? NO Correct inter-unit cable of remote controller YES Correct connection of connector. Check circuit wiring. NO Check power connection of indoor unit. (Turn on power again.) NO Check indoor P.C. board (MCC-1403). Defect → Replace YES Correct a master unit/a follower unit.
[E04 error] NO Does outdoor operate? Is group address setup of remote controller correct? YES NO Check CODE No. [14]. YES Are wiring in indoor unit and 1, 2, 3 inter-unit cables correct? NO Correct wiring and inter-unit cables. NO Correct wiring of connector and terminal blocks. YES Are wirings of terminal blocks (1, 2, 3) wired to CN67 normal? YES Check indoor P.C. board. Defect → Replace Check outdoor P.C. board. Defect → Replace [E10 error] YES Check power supply voltage. Correct lines.
[E18 error] Is inter-unit cable of A and B normal? NO Correct inter-unit cable of remote controller. YES Correct connection of connector. Check circuit wiring. NO Check power connection status of indoor unit (Connect again).
[L20 error] Are wiring connections to communication lines U3 and U4 normal? NO Correct wiring connection. YES Is not the multiple same central control system addresses connected? YES Correct central control system address. NO Check central controller (including network adapter) and indoor P.C. board (MCC-1403). Defect → Replace [L30 error] Are outside devices of connector CN80 connected? NO Check indoor P.C. board (MCC-1403). Defect → Replace NO Check outside devices.
[P10 error] Is connection of float switch connector (Indoor control board CN34) normal? NO Correct connection of connector. YES NO YES Does float switch work? Is circuit wiring normal? YES NO NO Does drain pump work? Check and correct wiring and wire circuit. YES Is power of drain pump turned on? ∗ NO Are connector pins 1 and 3 at drain pump unit side shorted (Resistance value 0)? YES NO YES Replace drain pump and indoor P.C. board (MCC-1403). Check the drain pipe, etc. Check indoor P.C.
[P19 error] NO Is operation of 4-way valve normal? YES In heating mode, 4-way valve coil terminal 200V NO YES NO Is circuit wiring normal? YES Check 4-way valve. Defective → Replace Check and correct circuit. NO Is refrigerant flow by PMV normal? YES Check and replace PMV. Are resistance value characteristics of TC sensor normal? NO NO Check CDB P.C. board. YES YES Replace TC sensor. Check CDB P.C. board. Defective → Replace ∗ Refer to temperature-Resistance value characteristic table.
[F02 error] Is connection of TC sensor connector (CN101 on Indoor P.C. board) correct? NO Correct connection of connector. YES Are characteristics of TC sensor resistance value normal? NO Replace TC sensor. YES ∗ Refer to Charqacteristics-2. Check indoor P.C. board (MCC-1403). Defect → Replace [F01 error] Is connection of TCJ sensor connector (CN102 on Indoor P.C. board) correct? NO Correct connection of connector.
[C06 error] (1:1 model connection interface) NO Are U3 and U4 communication lines normal? Correct communication line. YES NO ∗1 Correct connection of connector. Is connection of connector normal? YES ∗1 In case of 1:1 model connection interface 1:1 model connection interface (MCC-1440) CN51 and indoor P.C. board CN050. NO Are A and B communication lines normal? Check connection of A and B terminal blocks. Correct communication line of remote controller.
[E03 error] (Master indoor unit) [E03 error] is detected when the indoor unit cannot receive a signal from the wired remote controller (also central controller). Check A and B remote controllers and communication lines of the central control system U3 and U4. As communication is impossible, this check code [E03] is not displayed on the wired remote controller and the central controller. [E01] is displayed on the wired remote controller and [C06 error] is displayed on the central controller.
Temperature – Resistance value characteristic table Temperature sensor TA, TC, TCJ Representative value Temperature (°C) Ω) Resistance value (kΩ (Minimum value) (Standard value) (Maximum value) 0 32.33 33.80 35.30 10 19.63 20.35 21.09 20 12.23 12.59 12.95 25 9.75 10.00 10.25 30 7.764 7.990 8.218 40 5.013 5.192 5.375 50 3.312 3.451 3.594 60 2.236 2.343 2.454 70 1.540 1.623 1.709 80 1.082 1.146 1.213 90 0.7740 0.8237 0.8761 100 0.5634 0.6023 0.
Inspection of Fan Motor Part name Fan motor STF200–370–4AR Checking procedure Measure the resistance value of each winding by using the tester. Position Resistance value YEL Black – Red 12.1 Ω BLU ORN Black – White 12.4 Ω BLK Black – Yellow 3.94 Ω WHI GRY RED Orange – White 13.47 Ω Blue – White 15.
8. REPLACEMENT OF SERVICE P.C. BOARD 8-1. Indoort Unit The nonvolatile memory (hereafter called EEPROM, IC503) on the indoor unit P.C. board before replacement includes the model specific type information and capacity codes as the factory-set value and the important setting data which have been automatically or manually set when the indoor unit is installed, such as system/indoor/group addresses, high ceiling select setting, etc.
[1] Setting data read out from EEPROM The setting data modified on the site, other than factory-set value, stored in the EEPROM shall be read out. SET CL TEST Step 1 , and button on the remote controller simultaneously for more than 4 seconds. Push ∗ When the group operation control is performed, the unit No. displayed for the first time is the header unit No. At this time, the CODE No. (DN) shows “ ”.
[3] Writing the setting data to EEPROM The settings stored in the EEPROM of the P.C. board for indoor unit servicing are the factory-set values. SET CL TEST Step 1 , and buttons on the remote controller simultaneously for more than 4 seconds. Push ∗ In the group control operation, the unit No. displayed for the first time is the header unit No. At this time, the CODE No. (DN) shows “ ”. Also, the fan of the indoor unit selected starts its operation and the swing operation starts if it has the louvers.
Table 1 Item DN Setting data Factory-set value 01 Filter sign lighting time Depending on Type 02 Filter pollution leve 0000: standard 03 Central control address 0099: Not determined 06 Heating suction temperature shift 0002: +2°C (flooring installation type: 0) OF Cooling only 0000: Heat pump 10 Type Depending on model type 11 Indoor unit capacity Depending on capacity type 12 System address 0099: Not determined 13 Indoor unit address 0099: Not determined 14 Group address 00
9. SETUP AT LOCAL SITE AND OTHERS 9-1. Indoor Unit 9-1-1. Test Run Setup on Remote Controller TEST 1. When pushing button on the remote controller for 4 seconds or more, “TEST” is displayed on LC display. ON / OFF Then push button. • “TEST” is displayed on LC display during operation of Test Run. • During Test Run, temperature cannot be adjusted but air volume can be selected. • In heating and cooling operation, a command to fix the Test Run frequency is output.
9-1-3. LED Display on Indoor P.C. Board 1. D002 (Red) • Goes on at the same time when power was turned on (Main microcomputer operates and goes on.) • Flashes with 1-second interval (every 500ms): When EEPROM is not provided or writing was an error. • Flashes with 10-seconds interval (every 5S): When the mode is DISP 2. D203 (Red) • Goes on when power is supplied to remote controller (Lights on the hardware) 9-1-4. Function Selection Setup Perform setting while the air conditioner stops.
Function selection item No. (DN) list Item DN 01 Filter sign lighting time Contents 0000:None 0001: 150H 0002:2500H 0003: 5000H 0004:10000H 0005: Clogging sensor used 0001:No.1 unit to 0064: No.64 unit At shipment from factory According to type 03 Central control address 06 Heating suction temp. shift 10 Type 11 Indoor unit capacity 0000:Undecided 12 Line address 0001:No.1 unit 13 Indoor unit address 0001:No.1 unit 14 Group address 1E In automatic cooling/heating, temp.
9-1-5. Wiring and Setting of Remote Controller Control 2-remote controller control (Controlled by 2 remote controllers) This control is to operate 1 or multiple indoor units are operated by 2 remote controllers. (Max. 2 remote controllers are connectable.) • When connected 2 remote controllers operate an indoor unit (Setup method) One or multiple indoor units are controlled by 2 remote controllers. (Max. 2 remote controllers are connectable.
9-1-6. Monitor Function of Remote Controller Switch n Calling of sensor temperature display Each data of the remote controller, indoor unit and outdoor unit can be understood by calling the service monitor mode from the remote controller. 1 2 TEST CL Push + buttons simultaneously for 4 seconds to call the service monitor mode. The service monitor goes on, the master indoor unit No. is displayed at first and then the temperature of CODE No. is displayed. TEMP.
n Calling of error history The error contents in the past can be called. 1 SET TEMP. TEST Push + buttons simultaneously for 4 seconds or more to call the service check mode. Service Check goes on, the CODE No. 01 is displayed, and then the content of the latest alarm is displayed. The number and error contents of the indoor unit in which an error occurred are displayed. TIMER SET 2 / buttons to change the error temperature history No. (CODE No.) CODE No.
n Indoor unit power-ON sequence • The unit without power feed waits entirely → Waiting status is released by system start • Reboot when power is fed on the way Power ON Not normal NO 3 minutes elapse Gr construction check YES Normal ∗ Gr normal 1) There is no duplicated indoor unit address. 2) There is no invalid indoor unit address. 3) Individual unit and header / follower units are not intermingled.
9-2. Setup at Local Site / Others Model name: TCB-PCNT30TLE2 9-2-1. 1:1 Model Connection Interface 1. Function This model is an optional P.C. board to connect the indoor unit to 1:1 model connection interface. 2. Microprocessor block diagram Indoor unit Central controller 1:1 model connection interface P.C. board CN050 Indoor control P.C.
4. Wiring specifications • Use 2-core with no polar wire. • Match the length of wire to wire length of the central Size No. of wires control system. Up to 1000m: twisted wire 1.25mm2 If mixed in the SMMS system, the wire length is lengthened 2 Up to 2000m: twisted wire 2.0mm2 with all indoor/outdoor inter-unit wire length at side. • To prevent noise trouble, use 2-core shield wire. • Connect the shield wire by closed-end connection and apply open process (insulating process) to the last terminal.
6. External view of P.C. board assembly Terminator (SW01) 52 85 7. Address setup In addition to set up the central control address, it is necessary to change the indoor unit number. (Line/Indoor/Group address). For details, refer to 1:1 model connection interface Installation Manual. 9-3. How to Set up Central Control Address Number When connecting the indoor unit to the central control remote controller using 1:1 model connection interface, it is necessary to set up the central control address number.
How to confirm the central control address (New function for AMT32E remote controller) It can be confirmed even during operation or stopping. 1 2 3 Push UNIT LOUVER button for 4 seconds or more. ò In the frame at left side of the remote controller screen, the lighting set contents are displayed. During unset time, '' (At shipment from factory) is displayed. ò After lighting display for 3 seconds, the display automatically disappears.
10. ADDRESS SETUP 10-1. Address Setup Procedure When an outdoor unit and an indoor unit are connected, or when an outdoor unit is connected to each indoor unit respectively in the group operation even if multiple refrigerant lines are provided, the automatic address setup completes with power-ON of the outdoor unit. The operation of the remote controller is not accepted while automatic address works. (Approx.
10-2. Address Setup & Group Control Indoor unit No. : N - n = Outdoor unit line address N (Max. 30) - Indoor unit address n (Max. 64) Group address : 0 = Single (Not group control) 1 = Header unit in group control 2 = Follower unit in group control Header unit (= 1) : The representative of multiple indoor units in group operation sends/receives signals to/from the remote controllers and follower indoor units.
10-2-2. Automatic Address Example from Unset Address (No miswiring) 1. Standard (One outdoor unit) 1) Single 1-1 Individual (Header/Master) Only turning on source power supply (Automatic completion) 2. Group operation (Multiple outdoor units = Multiple indoor units with serial communication only, without twin) 2-1 Header/Sub 1-1 Header/Sub 3-1 Header/Master 8-1 Header/Sub (Max.
10-3. Address Setup (Manual Setting from Remote Controller) In case that addresses of the indoor units will be determined prior to piping work after cabling work • Set an indoor unit per a remote controller. • Turn on power supply.
n Confirmation of indoor unit No. position 1. To know the indoor unit addresses though position of the indoor unit body is recognized • In case of individual operation (Wired remote controller : indoor unit = 1 : 1) (Follow to the procedure during operation) 1 2 ON / OFF Push button if the unit stops. UNIT LOUVER Push button. Unit No. 1-1 is displayed on LCD. (It disappears after several seconds.) The displayed unit No. indicate line address and indoor unit address.
Owner’s Manual Concealed Duct High Static Pressure 11. OWNER’S MANUAL Original instruction ADOPTION OF NEW REFRIGERANT This Air Conditioner uses R410A an environmentally friendly refrigerant. Owner’s Manual Concealed Duct High Static Pressure Thank you for purchasing this Toshiba air conditioner. Please read carefully through these instructions that contain important information which complies with the “Machinery” Directive (Directive 2006/42/EC), and ensure that you understand them.
Owner’s Manual Concealed Duct High Static Pressure 1 n Warning Indications on the Air Conditioner Unit Warning indication Owner’s Manual Concealed Duct High Static Pressure PRECAUTIONS FOR SAFETY Description WARNING General WARNING WARNING ELECTRICAL SHOCK HAZARD ELECTRICAL SHOCK HAZARD Disconnect all remote electric power supplies before servicing. Disconnect all remote electric power supplies before servicing. • Carefully read Owner’s Manual before starting the air conditioner.
Owner’s Manual Concealed Duct High Static Pressure Relocation • When the air conditioner is to be relocated, do not relocate it yourself but contact a qualified installer or a qualified service person. Failure to relocate the air conditioner properly may result in electric shocks and/or a fire. (∗1) Refer to the “Definition of Qualified Installer or Qualified Service Person.
Owner’s Manual Concealed Duct High Static Pressure 2 3 PART NAMES n Indoor unit Owner’s Manual Concealed Duct High Static Pressure WIRED REMOTE CONTROLLER This remote controller can control the operation of up to 8 indoor units. n Display section Air discharge Connect a discharge duct. Air intake Connect a suction duct. In the display illustration below all the icons are shown. When the unit is in operation, only relevant icons will be displayed.
Owner’s Manual Concealed Duct High Static Pressure Owner’s Manual Concealed Duct High Static Pressure n Operation section Push each button to select a desired operation. • The control saves commands in memory and after the initial setting, there is no need for any additional settings unless button. changes are desired. The air conditioner can be operated by pushing the 12 3 4 11 10 1 2 5 6 7 8 – 75 – 11 UNIT No. display Displays the number of the indoor unit selected.
Owner’s Manual Concealed Duct High Static Pressure 4 CORRECT USAGE n 8°C OPERATION (For object pre-heating) (Available for Super Digital Inverter outdoor units) • When you use the air conditioner for the first time or when you change the setting, follow the steps below. Settings are button. saved in memory and are displayed anytime the unit is turned on by pushing the n Preparation • When the power supply is turned on, a partition line is displayed on the display part of the remote controller.
Owner’s Manual Concealed Duct High Static Pressure 5 6 TIMER OPERATION • Three timer modes are available: (Setting of up to 168 hours is enabled.) Off timer : The unit stops when the set time is reached. Repeat Off timer : The unit stops daily when the set time is reached. On timer : The unit starts when the set time is reached. Push Power saving mode will stay in effect until it is cancelled. 2 4 3 Set The timer mode changes with every push of the button.
Owner’s Manual Concealed Duct High Static Pressure 7 8 ADVANCED SETTINGS n Power saving mode Owner’s Manual Concealed Duct High Static Pressure ENERGY SAVING RECOMMENDATIONS Select a comfortable set point and minimize adjusting it. • Clean the filter when ever the filter display is illuminated on remote controller. • Keep doors and windows closed and open them only when necessary. • Use drapes, curtains, or shades to keep direct sun light from heating the room on very hot days.
Owner’s Manual Concealed Duct High Static Pressure 9 MAINTENANCE Owner’s Manual Concealed Duct High Static Pressure Maintenance List Unit Check (visual/auditory) Heat exchanger Indoor/outdoor • Dust/dirt clogging, scratches • Wash the heat exchanger when it is clogged. Fan motor Indoor/outdoor • Sound • Take appropriate measures when abnormal sound is generated.
Owner’s Manual Concealed Duct High Static Pressure 10 AIR CONDITIONER OPERATIONS AND PERFORMANCE 3 minutes protection function 3-minutes protection function prevents the air conditioner from starting for initial 3 minutes after the main power switch/ circuit breaker is turned on for re-starting the air conditioner. Power failure Power failure during operation will stop the unit completely. • To restart the operation, push the ON/OFF button on the remote controller.
Owner’s Manual Concealed Duct High Static Pressure 12 TROUBLESHOOTING 13 SPECIFICATIONS CAUTION • The main power switch is turned off. • The circuit breaker is activated to cut off power supply. • The main power fuse has blown out. Does not cool well or heat well – 81 – • The air inlet and/or outlet of the outdoor unit is blocked. • Doors or windows are opened. • The set temperature is too high (In cooling) or low (In heating). u These are not failures.
Installation Manual Concealed Duct High Static Pressure 12. INSTALLATION MANUAL Original instruction ADOPTION OF NEW REFRIGERANT This Air Conditioner uses R410A an environmentally friendly refrigerant. Installation Manual Concealed Duct High Static Pressure Thank you for purchasing this Toshiba air conditioner. Please read carefully through these instructions that contain important information which complies with the “Machinery” Directive (Directive 2006/42/EC), and ensure that you understand them.
Installation Manual Concealed Duct High Static Pressure Definition of Protective Gear When the air conditioner is to be transported, installed, maintained, repaired or removed, wear protective gloves and ‘safety’ work clothing. In addition to such normal protective gear, wear the protective gear described below when undertaking the special work detailed in the table below.
Installation Manual Concealed Duct High Static Pressure 1 PRECAUTIONS FOR SAFETY WARNING General – 84 – • Before starting to install the air conditioner, read carefully through the Installation Manual, and follow its instructions to install the air conditioner. • Only a qualified installer (*1) or qualified service person (*1) is allowed to install the air conditioner.
Installation Manual Concealed Duct High Static Pressure CAUTION New Refrigerant Air Conditioner Installation • THIS AIR CONDITIONER ADOPTS THE NEW HFC REFRIGERANT (R410A) WHICH DOES NOT DESTROY OZONE LAYER. • The characteristics of R410A refrigerant are; easy to absorb water, oxidizing membrane or oil, and its pressure is approx. 1.6 times higher than that of refrigerant R22. Accompanied with the new refrigerant, refrigerating oil has also been changed.
Installation Manual Concealed Duct High Static Pressure 3 SELECTION OF INSTALLATION PLACE Installation Manual Concealed Duct High Static Pressure n Installation space (Unit: mm) Reserve space required for maintenance the indoor unit and service work. Upon approval of the customer, install the air conditioner in a place that satisfies the following conditions. • Place where the unit can be installed horizontally.
Installation Manual Concealed Duct High Static Pressure INSTALLATION WARNING • • • • Install the air conditioner certainly to sufficiently withstand the weight. If the strength is insufficient, the unit may fall down resulting in human injury. Perform a specified installation work to guard against strong wind or earthquake. An incomplete installation can cause accidents by the units falling and dropping.
Installation Manual Concealed Duct High Static Pressure n Diagrams for making connecting flanges (Unit: mm) The connecting flange (Incl. the fixing screw) is not supplied to the indoor unit. When the connecting flange is necessary, produce them in locally. Drawing figure is as follows. (Material: Galvanized steel plate, thickness of 1.6 mm) Installation Manual Concealed Duct High Static Pressure n Duct design 1.
Installation Manual Concealed Duct High Static Pressure 5 Installation Manual Concealed Duct High Static Pressure FAN CHARACTERISTICS Current value as a criterion, adjust the air volume value to become within the range of the chart below. Standard air volume: 4200m³/h 8.5 7.5 8 7 7.5 6.5 High static pressure tap (50Hz) 6 Medium static pressure tap (50Hz) 5.
Installation Manual Concealed Duct High Static Pressure 6 n Wire connection change of fan motor This duct is composed of 3 fan motors. To change external static pressure by duct resistance, connect the 3 connectors of the orange lead wires that are connected to the underside of the fan tap changing terminal block to the same number (F1, F2 or F3) terminal. The wires of the fan motor has been connected to (F2) [External static pressure 137Pa (14mmAq)] as factory default.
Installation Manual Concealed Duct High Static Pressure Installation Manual Concealed Duct High Static Pressure n Pipe material, size and insulator n Check the draining The following materials for piping work and insulating process are procured locally. Check if the water can flow out properly during the test run. Also, check if no water leakage from the piping connection port.
Installation Manual Concealed Duct High Static Pressure 7 n Heat insulating process • After drain check, covering the heat insulator for drain connecting section, wrap the drain pipe with heat insulator (Locally procured) without clearance from the end of the drain pipe connecting port of the indoor unit.
Installation Manual Concealed Duct High Static Pressure n Gas side refrigerant pipe connection Tightening connection CAUTION • Turn up the pipe heat insulator to the unit side. • Wrap the pipe with wet cloth. Do not apply excessive torque. Otherwise, the nut may crack depending on the conditions. Tightening torque 12.7 mm (dia.) 50 to 62 (5.0 to 6.2 kgf•m) Wet cloth u Tightening torque of flare pipe connections Pressure of R410A is higher than that of R22. (Approx. 1.
Installation Manual Concealed Duct High Static Pressure 8 ELECTRICAL CONNECTION n Wire connection Remote controller wiring WARNING 1. Using the specified wires, ensure to connect the wires, and fix wires securely so that the external tension to the wires do not affect the connecting part of the terminals. Incomplete connection or fixation may cause a fire, etc. 2. Be sure to connect earth wire. (grounding work) Incomplete grounding cause an electric shock.
Installation Manual Concealed Duct High Static Pressure 9 Group control 10 10 APPLICABLE CONTROLS Wired remote controller (Unit: mm) Procedure 1 REQUIREMENT R (L) S (N) A B A Indoor Unit 40 30 Installation Manual Concealed Duct High Static Pressure B Indoor Unit • When you use this air conditioner for the first time, it takes approx. 5 minutes until the remote controller becomes available after power-on. This is normal.
Installation Manual Concealed Duct High Static Pressure Procedure 6 When settings have been completed, push button to determine the settings. button is pushed, “SETTING” flashes and then When the display content disappears and the air conditioner enters the normal stop mode. (While “SETTING” is flashing, no operation of the remote controller is accepted.) n Power saving mode n Remote controller switch monitoring function 1. Push button for at least four seconds when the air conditioner is not working.
Installation Manual Concealed Duct High Static Pressure n Group control Installation Manual Concealed Duct High Static Pressure Procedure 3 Procedure example 1 1. Using TEMP. / buttons, specify CODE No. [12]. (CODE No. [12]: Line address) / buttons, change the line address 2. Using TIME from [3] to [2]. button. 3. Push In this time, the setup finishes when the display changes from flashing to lighting.
Installation Manual Concealed Duct High Static Pressure Procedure 6 If there is other indoor unit to be changed, repeat procedure 2 to 5 to change the setup. to select When the above setup has finished, push the indoor UNIT No. before change of setup, specify CODE / buttons, No. [12], [13], [14] in order with TEMP. and then check the changed contents. Address change check Before change: [3-3-1] → After change: [2-2-2] Pushing button clears the contents of which setup was changed.
Installation Manual Concealed Duct High Static Pressure 10 11 TEST RUN MAINTENANCE Procedure 1 n Before test run • Before turning on the power supply, carry out the following procedure. 1) Using 500V-megger, check that resistance of 1MΩ or more exists between the terminal block 1 to 3 and the earth (grounding). If resistance of less than 1MΩ is detected, do not run the unit. 2) Check the valve of the outdoor unit being opened fully.
Installation Manual Concealed Duct High Static Pressure 12 Maintenance List Part Unit Maintenance Check (visual/auditory) Heat exchanger Indoor/outdoor • Dust/dirt clogging, scratches • Wash the heat exchanger when it is clogged. Fan motor Indoor/outdoor • Sound • Take appropriate measures when abnormal sound is generated. Filter Indoor Fan Indoor • Wash the filter with water when it is contaminated. • Dust/dirt, breakage • Replace it when it is damaged.
Installation Manual Concealed Duct High Static Pressure Installation Manual Concealed Duct High Static Pressure n Error codes and parts to be checked Wired remote controller display Main defective parts Judging device Parts to be checked / error description Indication E01 No header remote controller Remote controller communication error E02 Remote controller transmission error E03 Indoor unit-remote controller regular communication error E04 Indoor unit-outdoor unit serial communication error
Revised: May, 2010 13. DETACHMENTS 13-1. Indoor Unit REQUIREMENT • At the service replacing time of the heat exchanger, the following tools are necessary. Prepare them before the service work. • Necessary tools: Plus screwdriver, monkey wrench, spanner, etc CAUTION • Be sure to place the heat exchanger at safe and flat place and then start the work. • Necessarily put gloves when starting the work. Working with the naked hands may cause injury on the hands. NOTE “Each fan motor weights approx. 8 kg.
No. Part name 1 Fan assembly (Continued) Remarks Work procedure 1) Take off screws (2 positions) of the electric parts box cover. 2) Remove the electric parts box cover. 3) Cut the bundling band (3 positions) which binds the fan motor lead wires. 4) Remove yellow (F1), blue (F2) and orange (F3) Faston terminals of the fan motor lead wires. 5) Remove FAN1 (White), FAN2 (Blue) and FAN3 (Red) connectors of the fan motor.
No. Part name Work procedure Remarks 1 Fan assembly (Continued) 12) Take off screws (Arrow mark indicating position) of the fan assembly. (M5 screw × 3 positions) 13) Pull out the fan assembly (two fans) toward you. 12) Screws ∗ Status when all the fan assemblies are pulled out ∗ Pull out it toward you. 14) 14) Take off earth screw (Arrow mark indicating position) of the fan motor. (Ø4 screw × 1 position) 15) Take off screws (Arrow mark indicating position) which mount the fan case.
No. Part name 1 Fan assembly (Continued) Remarks Work procedure 1) Take off screws (Arrow mark indicating position) of the tightening band and then remove the tightening band, the fixing bracket and the fan motor. 2) Cut the bundling band (2 positions) that fix the protective tube (white) on the relay connector of the fan motor. 3) Remove the fan motor lead wire assembly and the protective tube from lead wire of the fan motor.
14. EXPLODED VIEWS AND PARTS LIST 14-1. Indoor Unit 204, 205 211 212 201 202 203 210 208 209 206, 207 Location No. Part No.
215, 216, 217 219 218 218 214 213 Location No. Part No.
401 404 409 412 414 402 405 407 411 406 410 408 413 403 Location No. Part No.
WARNINGS ON REFRIGERANT LEAKAGE Check of Concentration Limit The room in which the air conditioner is to be installed requires a design that in the event of refrigerant gas leaking out, its concentration will not exceed a set limit. The refrigerant R410A which is used in the air conditioner is safe, without the toxicity or combustibility of ammonia, and is not restricted by laws to be imposed which protect the ozone layer.
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