Carrier 42QHE09D8SH Service Manual Download

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SUPER INVERTER SERIES

MULTI TYPE

Service Manual

Summary of Contents for 42QHE09D8SH

Page 1: ...SUPER INVERTER SERIES MULTI TYPE Service Manual ...

Page 2: ...eneral information of Indoor Units 7 4 Features 8 5 Dimensions 19 6 Service Space unit mm 25 7 Wiring diagram 28 8 Indoor units combination 39 9 Operation temperature range 42 10 Electronic function 43 11 General information of Outdoor Units 59 12 Features 60 13 Dimensions 61 14 Refrigeration Cycle Diagram 62 15 Sound Levels 64 16 Installation Details 65 17 Electronic control function 73 18 Troubl...

Page 3: ...orate with age If the base collapses the air conditioner could fall with it causing property damage product failure and personal injury Do not let the air conditioner run for a long time when the humidity is very high and a door or a window is left open Take care to ensure that power cable could not be pulled out or damaged during operation There is risk of fire or electric shock Do not place anyt...

Page 4: ... for special purposes such as preserving foods works of art etc It is a consumer air conditioner not a precision refrigerant system There is risk of damage or loss of property Do not block the inlet or outlet of air flow Use a soft cloth to clean Do not use harsh detergents solvents etc There is risk of fire electric shock or damage to the plastic parts of the product Do not touch the metal parts ...

Page 5: ...ke sure that there are no flammable hazards or ignition risks NO SMOKING signs shall be displayed 7 Ventilated area Ensure that the area is in the open or that it is adequately ventilated before breaking into the system or conducting any hot work A degree of ventilation shall continue during the period that the work is carried out The ventilation should safely disperse any released refrigerant and...

Page 6: ...ble refrigerants Under no circumstances shall potential sources of ignition be used in the searching for or detection of refrigerant leaks A halide torch or any other detector using a naked flame shall not be used 14 Leak detection methods The following leak detection methods are deemed acceptable for systems containing flammable refrigerants Electronic leak detectors shall be used to detect flamm...

Page 7: ...from various parts of the system f Make sure that cylinder is situated on the scales before recovery takes place g Start the recovery machine and operate in accordance with manufacturer s instructions h Do not overfill cylinders No more than 80 volume liquid charge i Do not exceed the maximum working pressure of the cylinder even temporarily j When the cylinders have been filled correctly and the ...

Page 8: ...pressors or compressor oils are to be removed ensure that they have been evacuated to an acceptable level to make certain that flammable refrigerant does not remain within the lubricant The evacuation process shall be carried out prior to returning the compressor to the suppliers Only electric heating to the compressor body shall be employed to accelerate this process When oil is drained from a sy...

Page 9: ...7 3 General information of Indoor Units Four way cassette compact Four way cassette Super Slim A6 Ducted Under Ceiling 18C ODU 14 18 21 27K 28 36 42K Cool Easy ...

Page 10: ...D8SH 7K HP Accord to ODU 42QHG007D8S 9K HP Accord to ODU 42QHG009D8S 12K HP Accord to ODU 42QHG012D8S 18K HP Accord to ODU 42QHG018D8S 24K HP Accord to ODU 42QHG024D8S 7K HP Accord to ODU 42QTD007D8S 9K HP Accord to ODU 42QTD009D8S 12K HP Accord to ODU 42QTD012D8S 1 18K HP Accord to ODU 42QTD018D8S 2 24K HP Accord to ODU 42QTD024D8S 7K HP Accord to ODU 42QSS007D8S 9K HP Accord to ODU 42QSS009D8S 1...

Page 11: ...ot damage the decoration The panel size is 647 50 647mm The hooks are designed in the four corners of the body which can save installation space 4 1 3 Electric control box built in design The E box is simply and safely built inside the indoor unit It s convenient for installation and maintenance Can check the control part easily you only need to open the air return grille 4 1 4 Fresh air intake fu...

Page 12: ...9 Dimension Φ75mm Fresh Air 4 1 5 Air passage function Reserves the space for air outlet from the side of indoor unit It s availed to connect air duct from the two sides to the nearby small rooms ...

Page 13: ...lation 4 2 3 Reserved Air Outlet for Duct The cassette unit is equipped with reserved connection for air outlet at the side of the indoor unit It can connect to an air duct to cool a small room nearby 4 2 4 Reserved remote on off and alarm ports Optional for fixed speed units standard for inverter units Remote on off With the reserved ports a remote switch can be easily connected to realize remote...

Page 14: ... fresh and comfortable air feeling 4 2 6 Wired Controller Optional Compared with infrared remote controller wired controller can be fixed on the wall and avoid mislaying It s mainly used for commercial zone and makes air conditioner control more convenient ...

Page 15: ...nto tight roof spaces 4 3 3 Constant air volume control For ordinary duct when the static pressure exceeds the expected range it is fairly difficult even for an experienced installer to calculate and adjust the air volume precisely With constant air volume control technology the duct will automatically adjusts to perfect static pressure and keep constant air volume 4 3 4 Installation accessories O...

Page 16: ...ar and bottom is the same It s very easy to switch to match different application 4 3 6 Communication wire connection A6 duct uses two wires without polarity connection way which almost has no mistake during the installation Air intake from rear Standard Air intake from bottom Optional Filter ...

Page 17: ...led in rear side or bottom side With a larger window design once the motor and the blower wheels have been detached heat exchanger and water receiver tray in behind can be seen very clearly Dusted can be easily removed from the inside by vacuum 4 3 8 Easy maintenance A6 ducted allows operators maintenance the motor from the bottom more easily compare with that on the top ...

Page 18: ...fills air quality more healthy and comfortable A ventilation motor provided by the installer can be installed inside the fresh air duct to improve the fresh air volume There are reserved ports for this motor on main PCB Standard for 3D inverter units and only optional for DC inverter 53 160 units 4 3 10 Built in drain pump Optional Built in drain pump can lift the water to 750mm upmost which widen...

Page 19: ... 3 Compact unit body space saving this unit body is very thin and harmonious with room It is beautiful elegant and space saving light weight and compact 4 4 4 Flexible installation can be used for floor standing or lower wall applications as a floor standing floor model it can be semi or fully recessed without loss of capacity 4 4 5 High efficiency filter built in Formaldehyde nemesis filter activ...

Page 20: ...lation The ceiling type can be easily installed into a corner of the ceiling even if the ceiling is very narrow It is especially useful when installation of an air conditioner in the center of the ceiling is impossible due to a structure such as one lighting 4 5 3 Two direction auto swing vertical horizontal and wide angle air flow Air flow directional control minimizes the air resistance and prod...

Page 21: ...18 4 5 6 Easy operation 4 5 7 Remote control and optional wired control method ...

Page 22: ...Panel E parts box Gas side Liquid side 4 install hanger Body Wiring connection port Drain pipe 32 Fresh air intake 65 570 545 570 523 260 647 647 50 150 Distribution duct 170 2 2 4 Screw hole for install panel Drain hole for Service 75 156 125 68 40 44 ...

Page 23: ...20 5 2 Four way cassette type super slim Model KBtu h Unit A B C D 24 mm 165 80 204 50 inch 6 5 3 15 8 03 1 97 ...

Page 24: ... 18 5 98 23 58 7 32 1 97 29 17 14 17 3 31 5 51 3 31 3 31 18 mm 880 210 674 600 140 706 50 136 782 190 40 920 508 78 148 88 112 inch 34 65 8 27 26 54 23 62 5 51 27 8 1 97 5 35 30 79 7 48 1 57 36 22 20 3 07 5 83 3 46 4 41 24 mm 1100 249 774 700 140 926 50 175 1001 228 5 1140 598 80 150 130 155 inch 43 31 9 80 30 47 27 56 5 51 36 46 1 97 6 89 39 41 8 98 0 2 44 88 23 54 3 15 5 91 5 12 6 10 ...

Page 25: ...22 5 4 Console 16 Drain pipe 195 Hanging arm 700 600 210 N A ...

Page 26: ...r Ceiling A B 220 222 C 120 2 40 120 140 2 33 Wiring connection port 204 94 Fresh air intake Drain discharge port Refrigerant pipe hole Hanging arm D Capacity KBtu h A B C D 18 1068 675 235 983 24 1068 675 235 983 ...

Page 27: ...1 24 5 6 Hi wall 5 6 AG Indoor unit Model KBtu h W D H 7K 9K 726 210 291 12K 835 208 295 18K 969 241 320 24K 1083 244 336 ...

Page 28: ...door unit 370 14 57 275 10 83 1140 44 88 D k 24 319 12 56 239 9 41 965 38 C 18k 295 11 61 225 8 86 795 31 3 B 9k 12k H mm inch D mm inch W mm inch Body Code Capacity H mm inch D mm inch W mm inch Body Code Capacity Cool Easy ...

Page 29: ...25 6 Service Space unit mm 6 1 Four way cassette compact 6 2 Four way cassette super slim ...

Page 30: ...26 6 3 Ducted Ensure enough space required for installation and maintenance All the indoor units reserve the hole to joint the fresh air pipe The hole size as following 6 4 Console ...

Page 31: ...27 6 5 Under Ceiling 6 6 Hi wall Cool Easy 18C AG ...

Page 32: ...Specifications 7 Electrical Wiring Diagrams 7 1 Indoor unit A6 Duct type 7K 9K ...

Page 33: ...Specifications 12K 18K 24K ...

Page 34: ...Specifications Page 67 Compact Cassette type 7K 9K ...

Page 35: ...Specifications Page 68 12K ...

Page 36: ...Specifications Page 69 18K ...

Page 37: ...Specifications Page 69 24K ...

Page 38: ...Specifications Page 70 Wall mounted type 18C 7K 9K 12K 18K ...

Page 39: ...Specifications Page 71 18C 24K ...

Page 40: ...CTORY SETTING FOR SETTING NETADDRESS CCM Comm Bus To CCM Comm Bus or 485 Wire controller To Randomly Connected Wire controller To Remote Switch To Remote Alarm 4 8 3 3 CN13 MULTI FUNCTION CONTROLBOARD NOTE The dotted bordered rectangle represents the component is optional the actual shape shall prevail Indoor unit Outdoor unit W 2 N S CN14 CAP M CN19 5 10 1 L WHITE CN21 CN5 Infrared Sensor 5 3 or ...

Page 41: ...s Page 80 14K 18K 4 WAY OPTIONAL DC FAN PAN HE ATER CRANKCASE HEATER BROWN L S N AMBIENTTEMP SENSOR CONDENSER TEMP SENSOR U V W BLUE RED BLACK AC FAN CA PACI T OR Y G Y G Y G Y G Y G 16022300002793 Outdoor Unit 7 2 ...

Page 42: ...Specifications Page 81 21K 27K 16022000035910 ...

Page 43: ...f indoor and outdoor units one magnetic after installation ring is used for one cable ٢ or١ Choosing OPTIONAL or decision is either٢ OPTIONAL DC FAN 6 CN14 3 ELECTRONIC EXPANSIVE VALVE ELECTRONIC EXPANSIVE VALVE 3 6 6 P 2 CN22 VALVE C ELECTRONIC EXPANSIVE VALVE 6 C 16022300000803 OPTIONAL RED OPTIONAL1 P 1 Y G L IN N IN CN25 CN23 S A S B CN3 CN4 BLACK BLUE BROWN BLACK RED S C CN20 L N POWER TO A S...

Page 44: ...Specifications Page 78 36k ...

Page 45: ...Specifications Page 79 42k ...

Page 46: ... 9 12 7 12 9 18 7 7 12 18 7 18 12 12 8 4 Indoor unit combination for 27K ODU One unit Two unit Three unit 7 7 7 7 18 9 18 7 7 7 7 9 12 9 12 12 9 7 9 9 9 12 12 7 7 9 7 12 12 12 12 12 12 7 12 9 12 12 18 7 7 12 9 9 9 18 7 9 9 9 9 12 8 5 Indoor unit combination for 28K ODU One unit Two unit Three unit Four unit 7 7 7 9 9 12 18 7 7 7 7 9 12 9 9 18 7 7 7 7 7 7 9 12 9 7 9 9 12 12 24 7 7 9 7 9 18 9 12 12 ...

Page 47: ...2 7 7 12 12 7 9 12 12 9 9 12 12 18 7 18 12 18 7 7 18 7 12 12 9 9 18 12 12 12 7 7 7 18 7 7 12 18 7 12 12 12 9 12 12 12 24 7 24 12 24 7 7 24 7 12 18 9 9 24 12 12 18 7 7 9 9 7 9 9 9 9 9 9 9 12 12 12 12 9 9 18 18 7 9 9 7 12 24 9 12 12 9 12 One unit Two unit Three unit Four unit 7 7 ATW 7 7 ATW 9 12 ATW 7 7 7 ATW 7 9 12 ATW 9 12 12 ATW 9 9 ATW 7 9 ATW 9 18 ATW 7 7 9 ATW 7 9 18 ATW 9 12 18 ATW 12 12 ATW...

Page 48: ... 12 18 7 7 7 9 7 7 9 24 7 9 9 18 7 12 12 18 9 9 12 24 7 7 7 12 7 7 12 12 7 9 9 24 9 9 9 9 9 12 12 12 7 7 7 18 7 7 12 18 7 9 12 12 9 9 9 12 9 12 12 18 7 7 7 24 7 7 12 24 7 9 12 18 9 9 9 18 12 12 12 12 7 7 9 9 7 7 18 18 7 9 12 24 9 9 9 24 12 12 12 18 7 7 9 12 7 9 9 9 7 9 18 18 9 9 12 12 Five Unit 7 7 7 7 7 7 7 7 9 18 7 7 9 12 12 7 9 9 9 18 9 9 9 12 12 7 7 7 7 9 7 7 7 12 12 7 7 9 12 18 7 9 9 12 12 9 ...

Page 49: ...tain safety protection features may come into operation and cause the unit to operate abnormally 2 The room relative humidity should be less than 80 If the air conditioner operates beyond this figure the surface of the air conditioner may attract condensation Please set the vertical air flow louver to its maximum angle vertically to the floor and set HIGH fan mode 3 The optimum performance will be...

Page 50: ...ressor discharge temperature Tsc Ajusted setting temperature For other models T1 Indoor room temperature T2 Indoor evaporator temperature T2B Coil temperature of indoor heat exchanger outlet This sensor is located in outdoor unit T3 Coil temperature of outdoor heat exchanger T4 Outdoor ambient temperature T5 Compressor discharge temperature Ts Setting temperature 10 2 Icon explanation on indoor di...

Page 51: ...rary button Operation lamp Timer indicator Infrared signal receiver Alarm indicator PRE DEF indicator cooling and heating type or fan only indicator cooling only type MANUAL Display digital tube 10 2 4 Console 10 2 5 Under Ceiling 10 2 6 15C AB AG Cool easy ...

Page 52: ...e indoor unit working in cooling mode or fan mode will change to off The outdoor unit will change to heating mode after compressor stop 3 minutes In case of one Indoor unit working in heating mode and another indoor unit is set to cooling mode or fan mode the indoor unit setting to cooling mode or fan mode will change to stand by The outdoor unit will continue working in heating mode If heating mo...

Page 53: ...f Outdoor Units Model name Dimension mm Compressor 805x330x554 KSN140D21UFZ 805x330x554 KSN140D21UFZ KSN140D21UFZ KTM240D57UMT 946x410x810 KTM240D57UMT 946x410x810 KTF310D43UMT 946x410x810 KTF310D43UMT 14K 18K 21K 27K 28K 36K 42K 890x342x673 ...

Page 54: ...he valves and prevents water from dripping 4 way valve control It is only operated in the heating operation mode except defrosting operation Outdoor unit Power relay control Hydrophilic aluminum fin Anti rust cabinet Valve protection cover Low noise air flow system Discharge pipe temperature protection ...

Page 55: ...Specifications 14K 18K s n o i s n e m i D 3 1 ...

Page 56: ...Specifications 21K 27K ...

Page 57: ...Specifications 28K 36K 42K ...

Page 58: ...ons Model Pipe Size Diameter ø Piping length m Elevation m Additional Refrigerant Rated Max Gas Liquid Single Total IDU and ODU Between IDUs 14K 2x9 52 2x6 35 15 25 40 15 10 12g m 18K Refrigerant Cycle Diagrams 14 ...

Page 59: ...Specifications Model Pipe Size Diameter ø Piping length m Elevation m Additional Refrigerant Rated Max Gas Liquid Single Total IDU and ODU Between IDUs 21K 3x9 52 3x6 35 22 5 30 60 15 10 12g m 27K ...

Page 60: ...Pipe Size Diameter ø Piping length m Elevation m Additional Refrigerant Rated Max Gas Liquid Single Total IDU and ODU Between IDUs 28K 3x9 52 1x12 7 4x6 35 30 35 80 15 10 12g m 36K 3x9 52 1x12 7 4x6 35 30 35 80 15 10 12g m ...

Page 61: ...Specifications Model Pipe Size Diameter ø Piping length m Elevation m Additional Refrigerant Rated Max Gas Liquid Single Total IDU and ODU Between IDUs 42K 4x9 52 1x12 7 5x6 35 37 5 35 80 15 10 12g m ...

Page 62: ...64 15 Sound Levels H 1 0m Outdoor Unit Microphone Note H 0 5 height of outdoor unit Model Noise Power dB A Noise level dB A 64 56 63 54 66 58 67 60 70 63 72 64 72 63 42K 36K 28K 27K 21K 18K 14K ...

Page 63: ...ted on the nameplate which located on the side panel of the unit Please refer to the nameplate before selecting the cable fuse and switch 16 3 Pipe length and the elevation Maximum piping length and height difference 1 drive 2 1 drive 3 1 drive 4 1 drive 5 Model Btu h 14K 18K 21K 27K 28K 36K 42K Max length for all rooms m 40 40 60 60 80 80 80 Max length for one IU m 25 25 25 30 30 35 35 Max height...

Page 64: ...Gas 15 9 5 8 Outdoor unit union diameter mm inch 1 drive 2 Liquid 6 35 1 4 2 Gas 9 52 3 8 2 1 drive 3 Liquid 6 35 1 4 3 Gas 9 52 3 8 3 1 drive 4 Liquid 6 35 1 4 4 Gas 9 52 3 8 3 12 7 1 2 1 1 drive 5 Liquid 6 35 1 4 5 Gas 9 52 3 8 4 12 7 1 2 1 16 4 Installation for the first time Air and moisture in the refrigerant system have undesirable effects as below Pressure in the system rises Operating curr...

Page 65: ...1Mpa after pumping 30 minutes it should be pumped 20 minutes more If the pressure can t achieve 0 1Mpa after pumping 50 minutes please check if there are some leakage points Fully close the handle Lo valve of the manifold valve and stop the operation of the vacuum pump Confirm that the gauge needle does not move approximately 5 minutes after turning off the vacuum pump 7 Turn the flare nut of the ...

Page 66: ...charge set to purge the air be careful of the liquid refrigerant 3 Put the charging cylinder onto the electronic scale and record the weight 4 Operate the air conditioner at the cooling mode 5 Open the valves Low side on the charge set and charge the system with liquid refrigerant 6 When the electronic scale displays the proper weight refer to the table disconnect the charge hose from the 3 way va...

Page 67: ...e careful of the liquid refrigerant 3 Put the charging cylinder onto the electronic scale and record the weight 4 Operate the air conditioner at the cooling mode 5 Open the valves Low side on the charge set and charge the system with liquid refrigerant 6 When the electronic scale displays the proper weight refer to the gauge and the pressure of the low side disconnect the charge hose from the 3 wa...

Page 68: ...ervice port 3 Air purging of the charge hose Open the handle Lo valve of the manifold valve slightly to purge air from the charge hose for 5 seconds and then close it quickly 4 Set the 2 way valve to the close position 5 Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 0 1MPa 6 Set the 3 way valve to the closed position immediately Do this quickly so that the g...

Page 69: ... position 2 Connect the vacuum pump to 3 way valve s service port 3 Evacuation for approximately one hour Confirm that the compound meter indicates 0 1Mpa 4 Close the valve Low side on the charge set turn off the vacuum pump and confirm that the gauge needle does not move approximately 5 minutes after turning off the vacuum pump 5 Disconnect the charge hose from the vacuum pump ...

Page 70: ...Low side on the charge set and charge the system with liquid refrigerant If the system cannot be charge with the specified amount of refrigerant or can be charged with a little at a time approximately 150g each time operating the air conditioner in the cooling cycle however one time is not sufficient wait approximately 1 minute and then repeat the procedure 5 When the electronic scale displays the...

Page 71: ... 2 Input power frequency 50Hz 3 Indoor fan normal working amp is less than 1A 4 Outdoor fan normal working amp is less than 1 5A 5 Four way valve normal working amp is less than 1A 17 3 Outdoor unit s digital display tube There is a digital display tube in outdoor PCB Digital display tube display function In standby the LED displays In compressor operation the LED display the running frequency In ...

Page 72: ... unit is not connected the digital display shows the following 9K 1HP 12K 1 2HP 18K 1 5HP 4 Indoor unit B capacity 5 Indoor unit C capacity 6 Indoor unit D capacity 7 Indoor unit E capacity 8 Indoor unit A capacity demand code Norm code HP 9K 1HP 12K 1 2HP 18K 1 5HP 9 Indoor unit B capacity demand code 10 Indoor unit C capacity demand code 11 Indoor unit D capacity demand code 12 Indoor unit E cap...

Page 73: ...higher than 99 the digital display shows single and double digits For example if the digital display shows 2 0 the EXV open angle is 120 4 480p 38 EXV open angle for B indoor unit 39 EXV open angle for C indoor unit 40 EXV open angle for D indoor unit 41 EXV open angle for E indoor unit 42 Frequency limit symbol Bit7 Frequency limit caused by IGBT radiator The display value is a hexidecimal number...

Page 74: ...ncy lim it N orm al Frequency holding 17 5 3 Low voltage protection VO LTAGE No lim it VOLT_LTM _FREQ 1_ADD VOLT_LTM _FREQ 2_ADD Note if the low voltage protection occurs and not resumes within 3min it will keep the protection always after restart the machine 17 5 4 Compressor current limit protection Temperature interval of current limit is same as range of T4 limited frequency Cooling mode T4 Co...

Page 75: ...n 3 minutes 17 5 8 Oil return Running rules 1 If the compressor frequency keeps lower than setting frequency for setting time the AC will rise the frequency to setting frequency for setting time and then resume to former frequency 2 The EXV will keep 300p while the indoor units will keep the current running mode If the outdoor ambient is higher than setting frequency during the oil return the AC q...

Page 76: ...8 Overcurrent protection For some units F0 O 1 Open or short circuit of T4 temperature sensor F1 O 2 Open or short circuit of T3 temperature sensor F2 O 3 Open or short circuit of T5 temperature sensor F3 O 4 Outdoor EEPROM malfunction For some units F4 O 5 Outdoor fan speed is out of control F5 O 6 Open or short circuit of T2B temperature sensor F6 O 7 Communication malfunction between indoor two...

Page 77: ...tection P0 Over or low voltage protection P1 High temperature protection of IPM module P2 Inverter compressor drive error P4 Indoor units mode conflict For AG andCool easy type Running Lamp Timer Lamp Display Error Information 1 time OFF EH 00 EH 0A Indoor unit EEPROM parameter error 2 times OFF EL 01 Indoor outdoor unit communication error 3 times OFF EH 02 Zero crossing signal detection error 4 ...

Page 78: ...mes FLASH PC 00 IPM malfunction or IGBT over strong current protection 2 times FLASH PC 01 Over voltage or over low voltage protection 3 times FLASH PC 02 Top temperature protection of compressor or High temperature protection of IPM module or High pressure protection 5 times FLASH PC 04 Inverter compressor drive error 1 time FLASH PC 08 Current overload protection 7 times FLASH PC 03 Low pressure...

Page 79: ...or is defective F3 No C Indoor unit coil outlet temperature sensor or connector of sensor is defective F4 No D Indoor unit coil outlet temperature sensor or connector of sensor is defective F5 No E Indoor unit coil outlet temperature sensor or connector of sensor is defective P0 Top temperature protection of compressor P1 High pressure protection For M4OB 36HFN8 Q M5OD 42HFN8 Q P2 Low pressure pro...

Page 80: ...tdoor compressor lack phase protection PC 44 Outdoor unit zero speed protection PC 45 Outdoor unit IR chip drive failure PC 46 Compressor speed has been out of control PC 49 Compressor overcurrent failure PC 30 High pressure protection For M5OE 42HFN8 Q PC 31 Low pressure protection For M5OE 42HFN8 Q PC 0A High temperature protection of condenser PC 06 Temperature protection of compressor discharg...

Page 81: ...83 EC 50 Open or short circuit of outdoor unit temperature sensor T3 T4 T5 ...

Page 82: ...1 Indoor EEPROM malfunction IDU E0 EA EH 00 EH 0A Yes Replace the indoor main PCB Power off then restart the unit 2 minutes later EEPROM An electrically erasable programmable read only memory whose contents can be erased and reprogrammed using a pulsed voltage ...

Page 83: ...oor unit by remote controller Is all indoor unit display error code Turn off the allindoor units Is IPM power LED or operating LED lamp On Refer PIC2 Yes A Is all the wiring between terminal and Indoor PCB connect ok No Yes A No Reconnect the wiring Is indoor units number correct Check on the outdoor check point 2 for dual zone 3 for tri zone 4 for qua zone 5 for qui zone Refer PIC 4 Yes No first ...

Page 84: ... 2 IPM or outdoor main PCB Self Check Power Operating Self Check Operating Pic 2 IPM or outdoor main PCB Pic 1 check the voltage of N to S Vs is it moving alternately between positive value and negative value ...

Page 85: ...87 PIC3 Main board LED when power on and unit standby PIC 4 check point button Press 1 time for check how many indoor units are connected ...

Page 86: ...ctions good Check the wiring of fan motor Are all the connections good No Yes No Correct the connections Correct the connections No Replace the fan motor Replace the fan motor Yes Yes Replace the main PCB Replace the main PCB No Check whether the main PCB is normal through index 1 Check whether the main PCB is normal through index 1 Yes No Index 1 1 Indoor AC fan motor Power on and set the unit ru...

Page 87: ...or Signal Voltage 1 Red Vs Vm 280V 380V 2 3 Black GND 0V 4 White Vcc 14 17 5V 5 Yellow Vsp 0 5 6V 6 Blue FG 14 17 5V For other types NO Color Signal Voltage 1 Red Vs Vm 192V 380V 2 3 Black GND 0V 4 White Vcc 13 5 16 5V 5 Yellow Vsp 0 6 5V 6 Blue FG 13 5 16 5V ...

Page 88: ... it normal Yes 10 3 1 5 Water level alarm malfunction IDU EE If the water level switch is inserted well If the water level switch is inserted well No Insert the water level switch well Insert the water level switch well If the water level switch is broken If the water level switch is broken Yes Replace the water level switch Replace the water level switch Replace the water pump If malfunction is s...

Page 89: ...t the connection or replace the wirings Yes 10 3 1 8 Inverter compressor drive malfunction IDU P4 PC04 The trouble shooting is same with IPM module protection 10 3 1 9 Communication malfunction between indoor two chips IDU FA Shut off the power supply and turn it on 2 minutes later Is it still displaying the error code YES Replace the indoor main PCB The unit is operating normally NO 10 3 1 10 Ref...

Page 90: ...r blockages if present Does a problem remain Put your hands in front of the indoor air outlet YES Is there cool air blowing out from indoor air outlet Is it securely attached Replace the indoor PCB YES Check the T2 sensor YES Check system for leakages NO NO Repair the leakage and recharge the refrigerant YES NO ...

Page 91: ...open circuit or has short circuited EC 52 Outdoor room temperature sensor T4 is in open circuit or has short circuited EC 53 Compressor discharge temperature sensor T5 is in open circuit or has short circuited EC 54 Evaporator coil outlet temperature sensor T2B is in open circuit or has short circuited EC 56 Open or short circuit of outdoor unit temperature sensor T3 T4 T5 E4 EC 50 Check the conne...

Page 92: ...the IPM board light Check the signal wire between the IPM board and the main board is it connected good Reconnect and retry Is error still display Replace IPM board and then check whether the system can run normally Replace the electric control box No No No No Yes Trouble is solved No Yes Replace outdoor main board and then check whether the system can run normally No Yes Yes E3 display ...

Page 93: ...k the voltage of outdoor unit power supply whether the voltage between L L1 and N L2 is about 220 240VAC Check the power supply Check whether the voltage of IPM board P and N is normal DC277 356V for 18 27KBtu h DC277 410V for 36 42KBtu h Replace bridge rectifiers and then check whether the system can run normally Replace IPM board and then check whether the system can run normally Replace outdoor...

Page 94: ...her the voltage range of P N on IPM module is normal DC277 356V for 18 27KBtu h DC277 410V for 36 42KBtu h No Check whether the inductance of PFC module is good If the inductance is good the resistance of the two ports is 0 Yes Replace the inductance No Connect it tightly check normal or not Replace the outdoor main board Yes Yes No No Replace the PFC module IPM module Trouble is solved ...

Page 95: ...art the unit after 2 minutes Is it within normal parameters Replace the fan motor Does a problem remain The unit is operating normally NO Shut off the power supply Rotate the fan by hand YES Does it turn easily Find the cause of the problem and resolve it NO Check the wiring of fan motor YES Is it improperly wired Ensure proper connections Measure the voltage for the fan motor from the PCB YES Rep...

Page 96: ...nd need to be replaced DC motor voltage input and output NO Color Signal Voltage 1 Red Vs Vm 140V 380V 2 3 Black GND 0V 4 White Vcc 13 5 16 5V 5 Yellow Vsp 0 6 5V 6 Blue FG 15V 2 Indoor or outdoor DC Fan Motor control chip is in PCB Release the UVW connector Measure the resistance of U V U W and V W If the resistances are not equal to each other the fan motor may be experiencing problems and need ...

Page 97: ...door ambient temperature is higher than 50 Check whether the outdoor ambient temperature is higher than 50 No Stop the unit Stop the unit Yes Check if the outdoor unit ventilation is good Check if the outdoor unit ventilation is good Yes Make the outdoor unit ventilate well Make the outdoor unit ventilate well Check whether the heat exchanger is dirty Check whether the heat exchanger is dirty No C...

Page 98: ...w pressure protector is broken Whether the low pressure protector is broken Check whether the outdoor ambient temperature is too low Check whether the outdoor ambient temperature is too low No Stop the unit Stop the unit Yes Open fully valve core of high pressure valve Open fully valve core of high pressure valve No Check whether valve core of high pressure valve is opened Check whether valve core...

Page 99: ... the refrigerant system is ok Judge 2 Check whether the outdoor ambient temperature is higher than 50 No Stop the unit Yes Judge 3 Check whether the outdoor unit is bad ventilation No Make the outdoor unit ventilate well Yes Judge 5 The refrigerant pipe is blocked No Let the refrigerant out then use the high pressure nitrogen or refrigerant to blow pipe vacuumize and charge the refrigerant again Y...

Page 100: ...to wiring diagrams Measure the resistance value of compressor discharge temp sensor If the value is not normal is normal refer to the Appendix 2 Measure the resistance value of compressor discharge temp sensor If the value is not normal is normal refer to the Appendix 2 No Yes Yes No Correct the wiring connection Correct the wiring connection Stop leaking and add refrigerant Stop leaking and add r...

Page 101: ...e outdoor unit ventilation is good Check if the outdoor unit ventilation is good Yes Make the outdoor unit ventilate well Make the outdoor unit ventilate well Check whether the heat exchanger is dirty Check whether the heat exchanger is dirty No Clean the heat exchanger Clean the heat exchanger Yes Check whether the refrigerant system is ok Check whether the refrigerant system is ok Replace outdoo...

Page 102: ...mpressor check whether the system can work normally Check whether the lines in E part box are connected tightly Yes Connect it tightly check ok or not No No Yes No Replace the bridge rectifiers Check whether the bridge rectifiers are normal Use the multimeter to measure the resistance between each two terminals check whether there is the condition that value of resistance is 0 Check whether the co...

Page 103: ...f compressor Top Is more than 90 No Check if the refrigerant system is normal Repair the refrigerant system Replace the outdoor control PCB Yes Check if all the connection especially the connection of OLP Over Load Protector sensor is good Correct the connection No Measure the resistance between the two ports of the OLP Is it zero Yes Replace the OLP No Replace the outdoor control PCB Yes No PC 02...

Page 104: ...restart the unit 2 minutes later Is it still displaying the error code The unit operates normally Check the wiring of fan motor Are all the connections good Correct the connections Check whether the three phase resistance of the fan is symmetrical Replace the fan motor Yes Yes Yes No No No Replace the main PCB No Trobule is solved Yes ...

Page 105: ...s Yes No No No Replace the main PCB No Trobule is solved Yes 10 3 3 16 Outdoor unit IR chip drive failure PC45 Power off then restart the unit 2 minutes later Replace the inverter module PCB Yes 18 3 3 17 The cooling operation or heating operation does not operate Potential causes Faulty 4 way valve Check of 4 way please refer to part 4 in 10 4 Trouble Criterion Of Main Parts 18 3 3 18 When coolin...

Page 106: ...tch on the outdoor unit PCB board 5 seconds until LED display CE which mean this function is working Approximately 5 10 minutes after the switch is pressed the CE disappear the wiring piping error will be corrected and wiring piping is properly connected Check switch LED display ...

Page 107: ...ure the resistance value with a tester Temperature Sensors Room temperature T1 sensor Indoor coil temperature T2 sensor Outdoor coil temperature T3 sensor Outdoor ambient temperature T4 sensor Compressor discharge temperature T5 sensor Measure the resistance value of each winding by using the multi meter ...

Page 108: ... 1 34105 116 0 40060 3 41 5878 37 5 87359 77 1 29078 117 0 38991 2 39 8239 38 5 62961 78 1 25423 118 0 37956 1 37 1988 39 5 39689 79 1 21330 119 0 36954 0 35 2024 40 5 17519 80 1 17393 120 0 35982 1 33 3269 41 4 96392 81 1 13604 121 0 35042 2 31 5635 42 4 76253 82 1 09958 122 0 3413 3 29 9058 43 4 57050 83 1 06448 123 0 33246 4 28 3459 44 4 38736 84 1 03069 124 0 32390 5 26 8778 45 4 21263 85 0 99...

Page 109: ...4 2 489 5 234 9 35 35 78 75 8 084 115 2 422 4 222 8 36 34 32 76 7 82 116 2 357 3 211 4 37 32 94 77 7 566 117 2 294 2 200 7 38 31 62 78 7 321 118 2 233 1 190 5 39 30 36 79 7 086 119 2 174 0 180 9 40 29 15 80 6 859 120 2 117 1 171 9 41 28 81 6 641 121 2 061 2 163 3 42 26 9 82 6 43 122 2 007 3 155 2 43 25 86 83 6 228 123 1 955 4 147 6 44 24 85 84 6 033 124 1 905 5 140 4 45 23 89 85 5 844 125 1 856 6 ...

Page 110: ...112 2 Compressor checking 1 Measure the resistance value of each winding by using a multi meter 2 Check the resistance value of each winding in the following table ...

Page 111: ...re troubleshooting Turn off the power let the large capacity electrolytic capacitors discharge completely and dismount the IPM Use a digital tester to measure the resistance between P and UVWN UVW and N Digital tester Normal resistance value Digital tester Normal resistance value Red Black Several MΩ Red Black Several MΩ P N U N U V V W W Red ...

Page 112: ......

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