Fisher FS2MIF-140AE2 Service Manual
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Fisher FS2MIF-140AE2 Service Manual

Room air conditioner dc inverter multi split outdoor units
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SERVICE MANUAL

DC Inverter Multi Split Outdoor units
NOTE:
Before servicing the unit, please read this at first.
Always contact with your service center if meet problem.

Room Air Conditioner

FS2MIF-140AE2
FS2MIF-180AE2
FS3MIF-210AE2
FS3MIF-270AE2
FS4MIF-280AE2
FS4MIF-360AE2
FS5MIF-360AE2
FI_SM_MULTI OUTDOOR FS2-3-4-5MIF---AE2_141105

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Summary of Contents for Fisher FS2MIF-140AE2

  • Page 1: Service Manual

    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...

  • Page 2: Table Of Contents

    CONTENTS 1. General 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.

  • Page 3: General Information Of Outdoor Units

    General information of Outdoor Units Model name Dimension (mm) Compressor FS2MIF-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: Features

    Features Outdoor unit Power relay control Low noise air flow system Hydrophilic aluminum fin The hydrophilic fin can improve the heating efficiency at operation mode. 4 way valve control It is only operated in the heating operation mode except defrosting operation. Anti-rust cabinet Valve protection cover It protects the valves and prevents water from dripping.

  • Page 5: Dimensions

    Dimensions FS2MIF-140AE2, FS2MIF-180AE2, FS3MIF-210AE2...
  • Page 6 FS3MIF-270AE2, FS4MIF-280AE2...
  • Page 7 FS4MIF-360AE2, FS5MIF-360AE2...

  • Page 8: Wiring Diagram

    Wiring Diagram FS2MIF-140AE2, FS2MIF-180AE2...
  • Page 9 FS3MIF-210AE2, FS3MIF-270AE2 FS4MIF-280AE2...
  • Page 10 FS4MIF-360AE2 FS5MIF-360AE2...

  • Page 11: Refrigeration Cycle Diagram

    Refrigeration Cycle Diagram 5.1 Refrigeration circuit drawing of inverter 1 drive 2 type INDOOR OUTDOOR EXV A CAPILIARY A LIQUID VALVE A CHECK VALVE EXV B CAPILIARY B LIQUID VALVE B Condenser temp. sensor CAPILIARY TUBE HEAT HEAT EXCHANGE T4 Ambient T1 Room EXCHANGE (EVAPORATOR)
  • Page 12 4.3 Refrigeration circuit drawing of inverter 1 drive 4 type INDOOR OUTDOOR EXV A CAPILIARY A LIQUID VALVE A EXV B CAPILIARY B LIQUID VALVE B CHECK VALVE EXV C CAPILIARY C LIQUID VALVE C Condenser temp. sensor EXV D CAPILIARY D CAPILIARY TUBE LIQUID VALVE D HEAT...

  • Page 13: Indoor Units Combination

    Indoor units combination Indoor unit combination for FS2MIF-140AE2 Two unit 9+12 7+12 Indoor unit combination for FS2MIF-180AE2 One unit Two unit 9+12 7+12 9+18 7+18 12+12 Indoor unit combination for FS3MIF-210AE2 Two unit Three unit 7+18 9+12 7+7+7 7+9+12 9+18...
  • Page 14 Indoor unit combination for FS4MIF-280AE2 Two unit Three unit Four unit 7+18 12+12 18+18 7+7+12 7+9+12 9+9+9 7+7+7+7 7+7+9+9 7+9+9+12 7+7+7+7 9+18 12+18 7+7+18 7+9+18 9+9+12 7+7+7+9 7+7+9+12 7+9+12+12 7+7+7+9 7+9+9 7+12+12 9+9+18 7+7+7+12 7+7+12+12 9+9+9+9 7+7+7+12 7+12+18 9+12+12 7+7+7+18 7+9+9+9 9+9+9+12 7+7+7+18...

  • Page 15: Installation Details

    Ф12.7 3500(357kgf.cm) 3600(367kgf.cm) 7.2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet. Rated current of appliance Nominal cross-sectional area (mm²) FS2MIF-140AE2; FS2MIF-180AE2 3x2,5 FS3MIF-210AE2; FS3MIF-270AE2 3x2,5 FS4MIF-280AE2 3x2,5 FS4MIF-360AE2; FS5MIF-360AE2 3x4,0 The cable size and the current of the fuse or switch are determined by the maximum current indicated on the nameplate which located on the side panel of the unit.
  • Page 16 Caution: ● Refrigerant pipe diameter is different according to indoor unit to be connected. When using the extension pipe, refer to the tables below. ● When refrigerant pipe diameter is different from that of outdoor unit union (for 18K indoor unit), additional transfer connector needs to be used on outdoor unit union.
  • Page 17 (Indoor unit) (Outdoor unit) (Liquid side) Two-way valve Close (Gas side) Three-way valve Close Manifold valve Compound meter Pressure gauge -0.1MPa Handle Lo Handle Hi Charge hose Charge hose Vacuum pump Vacuum pump 1) Completely tighten the flare nuts of the indoor and outdoor units, confirm that both the 2-way and 3-way valves are set to the closed position.
  • Page 18 2. Air purging by refrigerant Procedure: 1). Confirm that both the 2-way and 3-way valves are set to the closed position. 2). Connect the charge set and a charging cylinder to the service port of the 3-way valve. 3). Air purging. Open the valves on the charging cylinder and the charge set.
  • Page 19 Be sure to use a torque wrench to tighten the service port cap to a torque 18N·m. Be sure to check the gas leakage. 3. Adding the refrigerant if the pipe length >5m Electronic scale Procedure: 1). Connect the charge hose to the charging cylinder, open the 2-way valve and the 3-way valve. Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder.

  • Page 20: Adding The Refrigerant After Running The System For Many Years

    7.5 Adding the refrigerant after running the system for many years Electronic scale Procedure: 1). Connect the charge hose to the 3-way service port, open the 2-way valve and the 3-way valve. Connect the charge hose to the valve at the bottom of the cylinder. If the refrigerant is R410A, make the cylinder bottom up to ensure liquid charge.
  • Page 21 7.6 Re-installation while the indoor unit need to be repaired 1. Collecting the refrigerant into the outdoor unit Procedure 1). Confirm that both the 2-way and 3-way valves are set to the opened position Remove the valve stem caps and confirm that the valve stems are in the opened position. Be sure to use a hexagonal wrench to operate the valve stems.
  • Page 22 2. Air purging by the refrigerant Procedure: 1). Confirm that both the 2-way and 3-way valves are set to the closed position. 2). Connect the charge set and a charging cylinder to the service port of the 3-way valve Leave the valve on the charging cylinder closed. 3).
  • Page 23 7). Mount the valve stems nuts and the service port cap Be sure to use a torque wrench to tighten the service port cap to a torque 18N.m. Be sure to check the gas leakage. 7.7 Re-installation while the outdoor unit need to be repaired 1.
  • Page 24 2. Refrigerant charging Procedure: 1). Connect the charge hose to the charging cylinder, open the 2-way valve and the 3-way valve Connect the charge hose which you disconnected from the vacuum pump to the valve at the bottom of the cylinder. If the refrigerant is R410A, make the cylinder bottom up to ensure liquid charge. 2).
  • Page 25 7.8. Operation temperature range Temperature Cooling operation Heating operation Drying operation Mode Room temperature 17~32°C 0~30℃ 17~32°C 0℃～50℃ （-15°C～50℃：For Outdoor temperature -15℃～24℃ 0℃～50℃ the models with low temperature cooling system） CAUTION: 1. If the air conditioner is used beyond the above conditions, certain safety protection features may come into operation and cause the unit to operate abnormally.

  • Page 26: Electronic Control Function

    Electronic control function 8.1 Abbreviation T1: Indoor ambient temperature T2: Coil temperature of indoor heat exchanger middle. T2B: Coil temperature of indoor heat exchanger outlet. T3: Coil temperature of outdoor heat exchanger T4: Outdoor ambient temperature T5: Compressor discharge temperature Ts: Setting temperature 8.2 Electric control working environment.
  • Page 27 8.4 Outdoor unit point check function There is a check switch in outdoor PCB. Press the switch N times it will display the content corresponding to No. N. After getting into the check function, it will display No. N with 1.5s, meanwhile the low bit decimal of digit display flashing, indicated to get into the check function display.

  • Page 28: Running Mode

    EXV open angle for A indoor unit Actual data/4. EXV open angle for B indoor unit If the value is higher than 99, the digital display tube will show single digit and tens EXV open angle for C indoor unit digit.
  • Page 29 Heating mode T1 Ts Capacity area Norm value (N) 8.4.4 Number of indoor unit Display Number of indoor unit 8.4.5 Opening degree of electronic expansion valve: Actual opening degree equals the display data times 4...
  • Page 30 8.5 Protection 8.5.1 Three minutes delay at restart for compressor. 8.5.2 Temperature protection of compressor discharge. When the compressor discharge temp. is getting higher, the running frequency will be limited as below rules: ----If 102°C <T5<115°C decrease the frequency to the lower level every 2 minutes till to F1. ---If T5>115°C for 10 seconds, the compressor will stop and restart till T5<90°C 8.5.4 Compressor current limit protection If the compressor current exceeds the current limit value for 10 seconds, the compressor frequency will be...
  • Page 31 HEAT_F8 IHEATLMT4 HEAT_F7 IHEATLMT3 HEAT_F6 IHEATLMT2 HEAT_F5 IHEATLMT1 If the current frequency is lower than HEAT_F4, the frequency will not be limited. After 10s of the compressor start, if the current>IHEAT, the AC will display the failure for 30 seconds and stop. The AC will restart 3 minutes later.

  • Page 32: Troubleshooting

    9. Troubleshooting Indoor unit error code explanation: PROFESSIONAL series +HEAT R series: Display Operation lamp flash times Timer lamp Failure Indoor EEPROM malfunction Indoor / outdoor units communication error Indoor fan speed has been out of control Open or short circuit of T1 temperature sensor Open or short circuit of T2 temperature sensor Open or short circuit of T4 temperature sensor Open or short circuit of T3 temperature sensor...
  • Page 33 For Console Malfunction Running lamp Timer lamp Defrosting lamp ☆ Open or short circuit of T1 temperature sensor ☆ Open or short circuit of T2 temperature sensor Communication malfunction between indoor and outdoor ☆ units. ☆ Outdoor fan speed has been out of control ☆...
  • Page 34 Outdoor unit error code explanation: Display LED STATUS Outdoor EEPROM malfunction Indoor / outdoor units communication error Communication malfunction between IPM board and outdoor main board Open or short circuit of outdoor unit temperature sensor Voltage protection PFC module protection (For FS4MIF-280AE2,FS4MIF-360AE2,FS5MIF-360AE2) Outdoor fan speed has been out of control No A Indoor unit coil outlet temperature sensor or connector of sensor is defective No B Indoor unit coil outlet temperature sensor or connector of sensor is defective...
  • Page 35 9.3 Trouble shooting 9.3.1 For the indoor unit 9.3.1.1 Indoor EEPROM malfunction...
  • Page 36 9.3.1.2 Indoor / outdoor units communication error...
  • Page 37 Pic 1: check the voltage of N to S (Vs), is it moving alternately between positive value and negative value? Pic 2: :IPM (For dual/tri-zone) Operating Self-Check Pic 2: :IPM (For qua-zone) Power, Self-Check Operating...
  • Page 38 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 9.3.1.3 indoor unit fan speed has been out of control Index 1: 1.Indoor AC fan motor Measure the resistance value 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.
  • Page 40 For other models: Color Black White Yellow Blue For console: Color White Blue Yellow 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.
  • Page 41 2. Indoor DC fan motor(control chip is inside fan motor) Power on and when the unit is in standby, 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.
  • Page 42 For Duct & Four-way cassette (compact) Color Signal Voltage Vs/Vm 192V~380V Black White 13.5-16.5V Yellow 0~6.5V Blue For console: Color Signal Voltage 310V White Blue Yellow 0-7.5V Black...
  • Page 43 9.3.1.4 Open or short circuit of temperature sensor. Check the connections between temperature Correct the connections. sensor and PCB. Are the connections good? Check the resistance value of the sensor via Appendix 1 Is it normal? Replace indoor or outdoor PCB. Replace the sensor 9.3.1.6 Full-water malfunction If the water-level switch...
  • Page 44 9.3.2 For the outdoor unit 9.3.2 1 Outdoor EEPROM malfunction(ODU E0)
  • Page 45 9.3.2.2 Communication malfunction between IPM board and outdoor main board(ODU E3) Communication malfunction between IPM board and outdoor main board Is there at least one LED in the IPM board light? Check the signal wire between the IPM module and the main board, is it connected good? Reconnect and retry.
  • Page 46 9.3.2.3 Voltage protection(ODU E5)
  • Page 47 9.3.2.4 PFC module protection (ODU E6) (For FS4MIF-280AE2,FS4MIF-360AE2,FS5MIF-360AE2)
  • Page 48 9.3.2.5 Outdoor unit fan speed has 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 Color Black White Yellow Blue Index2: 1. Outdoor DC fan motor(control chip is inside fan motor) Power on and when the unit is in standby, 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.
  • Page 50 9.3.2.6 High pressure protection (ODU P1) (For FS4MIF-280AE2,FS4MIF-360AE2,FS5MIF-360AE2) High pressure protection Judge 1: Whether the wiring between the high pressure switch and main control Connect it well board is connected well or correctly Judge 2: Whether the high pressure protector is broken Method: Short connect the high pressure protector Replace high pressure protector...
  • Page 51 9.3.2.7 Low pressure protection (ODU P2) (For FS4MIF-280AE2,FS4MIF-360AE2,FS5MIF-360AE2)
  • Page 52 9.3.2.8 Current protection of compressor(ODU P3)
  • Page 53 9.3.2.4 Temperature protection of compressor discharge(ODU P4) Temperature protection of compressor discharge Check whether the Check whether the compressor discharge temp. Stop leaking and add refrigerant refrigerant is leak is more than 115°C ? Check whether the wiring connection is right between compressor discharge temp.
  • Page 54 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 9.3.2.10 IPM module protection(ODU P6) IPM module protection Check whether the voltage range Check whether the input Regulate it to correct, then of P-N on IPM module is normal? power supply is correct? check whether the system DC277-356V for 18-27KBtu/h; 208-230V, 1N, 60Hz can work normally? DC277-410V for 36KBtu/h...
  • Page 56 9.4 Main parts check Spec. Indoor unit Model FSAMI-Pro-71AE2 FSAI-Pro-91AE2 FSAI-Pro-121AE2 FSAIF-Pro-181AE2 Indoor fan motor RPG20E RPG20E RPG20E WZDK30-38G Model FSAI-Pro-90AE1 FSAI-Pro-120AE1 FSAI-Pro-180AE1 Indoor fan motor RPG13H RPG20E RPG25 Model FSAIF-HT-91AE2 FSAIF-HT-121AE2 FSAIF-HT-181AE2 Indoor fan motor WZDK20-38G WZDK20-38G WZDK58-38G Model 7K Duct 9K Duct 12K Duct...
  • Page 57 1. Temperature sensor checking Disconnect the temperature sensor from PCB, 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 Appendix 1 Temperature Sensor Resistance Value Table for T1,T2,T3,T4 (℃--K) ℃ ℃ ℃ ℃ K Ohm K Ohm K Ohm K Ohm 115.266 12.6431 2.35774 0.62973 108.146 12.0561 2.27249 0.61148 101.517 11.5000 2.19073 0.59386 96.3423 10.9731 2.11241 0.57683 89.5865 10.4736 2.03732 0.56038 84.2190...
  • Page 59 Appendix 2 Temperature Sensor Resistance Value Table for T5 (℃--K) ℃ ℃ ℃ ℃ K Ohm K Ohm K Ohm K Ohm 542.7 68.66 13.59 3.702 511.9 65.62 13.11 3.595 62.73 12.65 3.492 455.9 59.98 12.21 3.392 430.5 57.37 11.79 3.296 406.7 54.89...
  • Page 60 2.Compressor 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 3. IPM continuity check 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. Normal resistance value Digital tester Normal resistance value Digital tester (+)Red...

This manual is also suitable for:

Fs2mif-180ae2Fs3mif-270ae2Fs4mif-280ae2Fs4mif-360ae2Fs5mif-360ae2Fs3mif-210ae2

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