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Fisher FS2MIF-140AE2, Service Manual

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Fisher FS2MIF-140AE2 Service Manual Download Page 1

 

 

 

SERVICE MANUAL  

Room Air Conditioner  

DC Inverter Multi Split Outdoor units 

 

 

 

 

 

FS2MIF-140AE2 
FS2MIF-180AE2 
FS3MIF-210AE2 
FS3MIF-270AE2 
FS4MIF-280AE2 
FS4MIF-360AE2 
FS5MIF-360AE2 

 

NOTE:                                              

Before servicing the unit, please read this at first.  

Always contact with your service center if meet problem.     

 

 

FI_SM_MULTI OUTDOOR FS2-3-4-5MIF---AE2_141105 

 

Summary of Contents for FS2MIF-140AE2

Page 1: ...door units FS2MIF 140AE2 FS2MIF 180AE2 FS3MIF 210AE2 FS3MIF 270AE2 FS4MIF 280AE2 FS4MIF 360AE2 FS5MIF 360AE2 NOTE Before servicing the unit please read this at first Always contact with your service center if meet problem FI_SM_MULTI OUTDOOR FS2 3 4 5MIF AE2_141105 ...

Page 2: ... information of Outdoor Units 2 2 Features 3 3 Dimensions 4 4 Wiring Diagram 7 5 Refrigeration Cycle Diagram 10 6 Indoor units combination 12 7 Installation Details 14 8 Electronic control function 25 9 Troubleshooting 31 ...

Page 3: ...S2MIF 140AE2 845x320x700 DA130M1C 31FZ FS2MIF 180AE2 845x320x700 DA150S1C 20FZ FS3MIF 210AE2 845x320x700 DA150S1C 20FZ FS3MIF 270AE2 900x315x860 DA250S2C 30MT FS4MIF 280AE2 900x315x860 DA250S2C 30MT FS4MIF 360AE2 990x345x965 TNB306FPGMC L FS5MIF 360AE2 990x345x965 TNB306FPGMC L ...

Page 4: ...e 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 5: ...4 3 Dimensions FS2MIF 140AE2 FS2MIF 180AE2 FS3MIF 210AE2 ...

Page 6: ...5 FS3MIF 270AE2 FS4MIF 280AE2 ...

Page 7: ...6 FS4MIF 360AE2 FS5MIF 360AE2 ...

Page 8: ...7 4 Wiring Diagram FS2MIF 140AE2 FS2MIF 180AE2 ...

Page 9: ...8 FS3MIF 210AE2 FS3MIF 270AE2 FS4MIF 280AE2 ...

Page 10: ...9 FS4MIF 360AE2 FS5MIF 360AE2 ...

Page 11: ...APILIARY B LIQUID VALVE B GAS VALVE B Accumulator T2B A Evaporator temp sensor outlet T2B B 4 2 Refrigeration circuit drawing of inverter 1 drive 3 type LIQUID VALVE A GAS VALVE A HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER Compressor 4 WAY VALVE COOLING HEATING T2 Evaporator temp sensor middle T1 Room temp sensor T3 Condenser temp sensor T5 Discharge temp sensor T4 Ambient temp sensor INDOOR...

Page 12: ...ch Low pressure switch T2B A Evaporator temp sensor outlet T2B B T2B C T2B D 4 4 Refrigeration circuit drawing of inverter 1 drive 5 type LIQUID VALVE A GAS VALVE A HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER COOLING HEATING T2 Evaporator temp sensor middle T1 Room temp sensor T3 Condenser temp sensor T4 Ambient temp sensor INDOOR OUTDOOR EXV A CAPILIARY A CHECK VALVE CAPILIARY TUBE EXV B CAP...

Page 13: ... 9 9 7 9 9 12 7 12 9 18 7 18 12 12 6 3 Indoor unit combination for FS3MIF 210AE2 Two unit Three unit 7 18 9 12 7 7 7 7 9 12 9 18 7 7 9 9 9 9 12 12 7 7 12 9 9 12 12 18 7 9 9 6 4 Indoor unit combination for FS3MIF 270AE2 Two unit Three unit 7 18 9 12 12 12 7 7 7 7 9 9 7 12 18 9 12 12 9 18 12 18 7 7 9 7 9 12 9 9 9 9 12 18 18 18 7 7 12 7 9 18 9 9 12 12 12 12 7 7 18 7 12 12 9 9 18 ...

Page 14: ...t 7 7 7 12 7 7 12 18 7 9 12 18 9 9 9 12 9 12 12 18 7 7 7 18 7 7 18 18 7 9 18 18 9 9 9 18 12 12 12 12 7 7 9 9 7 9 9 9 7 12 12 12 9 9 12 12 12 12 12 18 7 7 9 12 7 9 9 12 7 12 12 18 9 9 12 18 7 7 9 18 7 9 9 18 7 12 18 18 9 9 18 18 7 7 12 12 7 9 12 12 9 9 9 9 9 12 12 12 Five Unit 7 7 7 7 7 7 7 7 9 18 7 7 9 12 18 7 9 9 12 18 9 9 9 12 12 7 7 7 7 9 7 7 7 12 18 7 7 12 12 18 7 9 12 12 12 9 9 9 12 18 7 7 7 ...

Page 15: ...r switch are determined by the maximum current indicated on the nameplate which located on the side panel of the unit Please refer to the nameplate before selecting the cable fuse and switch 7 3 Pipe length and the elevation Maximum piping length and height difference 1 drive 2 1 drive 3 1 drive 4 1 drive 5 Max length for all rooms m 30 45 60 75 Max length for one IU m 20 25 30 30 Max height diffe...

Page 16: ... 9 52 3 8 7 4 Installation for the first time Air and moisture in the refrigerant system have undesirable effects as below Pressure in the system rises Operating current rises Cooling or heating efficiency drops Moisture in the refrigerant circuit may freeze and block capillary tubing Water may lead to corrosion of parts in the refrigerant system Therefore the indoor units and the pipes between in...

Page 17: ...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 3 way valves about 45 counterclockwise for 6 or 7seconds after the gas coming out then tighten the flare nut again Make sure the...

Page 18: ...ute repeat 3 times After purging the air use a torque wrench to tighten the flare nut on the 2 way valve 4 Check the gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant Close the valve on the charging cylinder and discharge the refrigerant by loosening the flare nut on the 2 way valve approximately 45 until the gauge indicates 0 3 to 0 5 Mpa 6 Disconnect the charge ...

Page 19: ... bottom of the cylinder and press the check valve on the 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 ...

Page 20: ... 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 way...

Page 21: ...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 22: ...roximately 45 for 3 seconds then closing it for 1 minute repeat 3 times After purging the air use a torque wrench to tighten the flare nut on the 2 way valve 4 Check the gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant Close the valve on the charging cylinder and discharge the refrigerant by loosening the flare nut on the 2 way valve approximately 45 until the ga...

Page 23: ...ystem Procedure 1 Confirm that both the 2 way and 3 way valves are set to the opened 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 t...

Page 24: ...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 25: ... beyond the above conditions certain 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...

Page 26: ...by the LED displays In compressor operation the LED display the running frequency In defrosting mode The LED displays dF or alternative displays between running frequency and dF each displays 0 5s In compressor pre heating The LED displays PH or alternative displays between running frequency and PH each displays 0 5s During the oil return process The LED displays RO or alternative displays between...

Page 27: ...mp is lower than 9 degree the digital display tube will show 9 If the temp is higher than 70 degree the digital display tube will show 70 If the indoor unit is not connected the digital display tube will show 18 B indoor unit evaporator outlet temp T2BB 19 C indoor unit evaporator outlet temp T2BC 20 D indoor unit evaporator outlet temp T2BD 21 E indoor unit evaporator outlet temp T2BE 22 A indoor...

Page 28: ... T4 Bit4 Frequency limit caused by T2 Bit3 Frequency limit caused by T3 Bit2 Frequency limit caused by Tp Bit1 Frequency limit caused by current Bit0 Frequency limit caused by voltage 43 Average value of T2 Sum T2 value of all indoor units number of indoor units in good connection 44 Outdoor unit fan motor state Off 0 High speed 1 Med speed 2 Low speed 3 Breeze 4 Super breeze 5 45 The last error o...

Page 29: ... d e f 2 Capacity area a b c d e f Norm value N 3 2 1 5 1 0 5 0 8 4 4 Number of indoor unit Display Number of indoor unit 1 1 2 2 3 3 4 4 5 5 8 4 5 Opening degree of electronic expansion valve Actual opening degree equals the display data times 4 ...

Page 30: ... demand and rise to the upper level every 3 minutes When the frequency COOL_F4 via capacity demand COOL_F15 ICOOLLMT11 COOL_F14 ICOOLLMT10 COOL_F13 ICOOLLMT9 COOL_F12 ICOOLLMT8 COOL_F11 ICOOLLMT7 COOL_F10 ICOOLLMT6 COOL_F9 ICOOLLMT5 COOL_F8 ICOOLLMT4 COOL_F7 ICOOLLMT3 COOL_F6 ICOOLLMT2 COOL_F5 ICOOLLMT1 If the current frequency is lower than COOL_F4 the frequency will not be limited After 10s of t...

Page 31: ...for 3 seconds the compressor will stop while the indoor fan and outdoor fan will continue When T3 52 C the protection will release and the compressor will restart after 3 minutes 8 5 7 Outdoor unit anti freezing protection When T2B 0 C for 250 seconds the indoor unit capacity demand will be zero and resume to normal when T2B 10 C 8 5 8 Oil return Running rules 1 If the compressor frequency keeps l...

Page 32: ...ter compressor drive protection P5 6 Mode conflict P6 7 Low pressure protection Just matching with FS4MIF 360AE2 O light X off flash Light Commercial series Except Console NO MALFUNCTION RUN Timer DEF Alarm DISPLAY DIGITAL TUBE 1 Open or short circuit of T1 temperature sensor X X X E0 2 Open or short circuit of T2 temperature sensor X X X E1 3 Indoor outdoor units communication error X X X E2 4 Fu...

Page 33: ...etween indoor and outdoor units X X 4 Outdoor fan speed has been out of control X O 5 Indoor EEPROM malfunction X 6 IPM module protection X 7 Open or short circuit of T3 or T4 temperature sensor or Outdoor unit EEPROM parameter error 8 Voltage protection O 10 Inverter compressor drive protection X 11 Indoor fan Speed has been out of control O 12 Mode conflict X O O light X off flash at 5Hz flash a...

Page 34: ...ure sensor or connector of sensor 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 P1 High pressure protection For FS4MIF 280AE2 FS4MIF 360AE2 FS5MIF 360AE2 P2 Low pressure pr...

Page 35: ...34 9 3 Trouble shooting 9 3 1 For the indoor unit 9 3 1 1 Indoor EEPROM malfunction ...

Page 36: ...35 9 3 1 2 Indoor outdoor units communication error ...

Page 37: ... Pic 2 IPM For dual tri zone Self Check Power Operating Self Check Operating Pic 2 IPM For qua zone Pic 1 check the voltage of N to S Vs is it moving alternately between positive value and negative value ...

Page 38: ...37 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 39: ... of each winding by using the tester For the definite value of the resistance refer to 9 4 Main parts check 2 Indoor DC fan motor control chip is inside fan motor Measure the resistance value of each winding by using the tester If any resistance value is zero the fan motor must have problems and need to be replaced ...

Page 40: ...lue 5 Yellow 6 Black Index2 1 Indoor AC fan motor Power on and set the unit running in fan mode at high fan speed After running for 15 seconds measure the voltage of pin1 and pin2 If the value of the voltage is less than 100V 208 240V power supply or 50V 115V power supply the PCB must have problems and need to be replaced ...

Page 41: ...motor connector If the value of the voltage is not in the range showing in below table the PCB must have problems and need to be replaced For other models For console 5 4 6 3 2 1 DC motor voltage input and output For split type NO Color 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 ...

Page 42: ...lor 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 15V For console 5 4 6 3 2 1 NO Color Signal Voltage 1 Red VDC 310V 2 3 White Vcc 15V 4 Blue FG 15V 5 Yellow Vsp 0 7 5V 6 Black GND 0V ...

Page 43: ...door PCB Replace the sensor Check the resistance value of the sensor via Appendix 1 Is it normal No 9 3 1 6 Full water malfunction If the water level switch is inserted well No Insert the water level switch well If the water level switch is broken Yes Replace the water level switch If the water pump is normal No Replace the water pump Yes No Yes Check PCB board or replace the indoor main PCB ...

Page 44: ...43 9 3 2 For the outdoor unit 9 3 2 1 Outdoor EEPROM malfunction ODU E0 ...

Page 45: ...n the IPM board light Check the signal wire between the IPM module 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 ...

Page 46: ...45 9 3 2 3 Voltage protection ODU E5 ...

Page 47: ...46 9 3 2 4 PFC module protection ODU E6 For FS4MIF 280AE2 FS4MIF 360AE2 FS5MIF 360AE2 ...

Page 48: ...been out of control E8 Index 1 1 Outdoor DC fan motor control chip is inside fan motor Measure the resistance value of each winding by using the tester If any resistance value is zero the fan motor must have problems and need to be replaced ...

Page 49: ...measure the voltage of pin1 pin3 pin4 pin3 in fan motor connector If the value of the voltage is not in the range showing in below table the PCB must have problems and need to be replaced For other models 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 ...

Page 50: ... high pressure protector Yes Judge 2 Whether the high pressure protector is broken Check whether the refrigerant system is ok Judge 3 Check whether the outdoor ambient temperature is higher than 50 No Stop the unit Yes Judge 4 Check whether the outdoor unit is bad ventilation No Make the outdoor unit ventilate well Yes Judge 5 Check whether the heat exchanger is dirty Clean the heat exchanger Yes ...

Page 51: ...50 9 3 2 7 Low pressure protection ODU P2 For FS4MIF 280AE2 FS4MIF 360AE2 FS5MIF 360AE2 ...

Page 52: ...51 9 3 2 8 Current protection of compressor ODU P3 ...

Page 53: ...ompressor discharge temp sensor and PCB according to wiring diagrams Method Check whether the resistance of compressor discharge temp sensor is right refer to the Appendix 2 No Yes Yes Trouble is solved No Judge The discharge temp sensor is broken Check whether the refrigerant is leak Correct the wiring connection Stop leaking and add refrigerant Replace the compressor discharge temp sensor No Yes...

Page 54: ...53 9 3 2 9 High temperature protection of condenser ODU P5 When outdoor pipe temperature is more than 65 C the unit will stop and unit runs again when outdoor pipe temp less than 52 C ...

Page 55: ...e the compressor 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 whethe...

Page 56: ...ct Indoor fan motor WZDK27 38GS WZDK27 38GS WZDK27 38GS YSK68 4P Model 7K Cassette 9K Cassette 12K Cassette 18K Cassette Indoor fan motor WZDK37 38G WZDK37 38G WZDK37 38G YDK37 4P Model 9K Console 12K Console 18K Console Indoor fan motor RD 280 20 8A RD 280 20 8A RD 280 20 8A Outdoor unit Model 1x2 14k 1x2 18k 1x3 27K 1x3 21K Compressor DA130M1C 31FZ DA150S1C 20FZ DA250S2C 30MT DA150S1C 20FZ Outdo...

Page 57: ...B measure the resistance value with a tester Temperature Sensors Room temp T1 sensor Indoor coil temp T2 sensor Outdoor coil temp T3 sensor Outdoor ambient temp T4 sensor Compressor discharge temp T5 sensor Measure the resistance value of each winding by using the multi meter ...

Page 58: ... 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 9981...

Page 59: ...89 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 6 133 5...

Page 60: ...mpressor checking Measure the resistance value of each winding by using the tester Position Resistance Value DA130M1C 31FZ DA150S1C 20FZ DA250S2C 30MT TNB306FPGMC L Blue Red 1 77Ω 20 0 95Ω 20 0 55Ω 20 0 53Ω 20 ...

Page 61: ...or AC Fan Motor Measure the resistance value of each winding by using the tester Posi tion Resistance Value RPG20D Weilng RPG28D T ongDe RPG28D Dayang RPG20E T ongDe RPG20E Weilng RPG13H Weilng RPG25 T ongDe YSK68 4P Weilng YDK37 4P Blac k Red 398Ω 8 20 255Ω 8 20 271 3Ω 8 20 415Ω 8 20 387Ω 8 20 575Ω 8 20 295Ω 8 20 285 8Ω 8 20 258 7 Ω 8 20 Red Yello w 345Ω 8 20 335Ω 8 20 347 8Ω 8 20 396Ω 8 20 378Ω ...

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