Perfectaire 1PAMSH18-MZO2-16 Service Manual
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Perfectaire 1PAMSH18-MZO2-16 Service Manual

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CONDENSING UNITS
Revision B:
Model Numbers:
1PAMSH18-MZO2-16
1PAMSH27-MZO3-16
1PAMSH36-MZO4-16

Table of Contents

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9.
WARNING
Installation MUST conform with local building codes or, in the absence of local
codes, with the National Electrical Code NFPA70/ANSI C1-1993 or current edition
and Canadian Electrical Code Part1 CSA C.22.1.
The information contained in the manual is intended for use by a qualified service
technician familiar with safety procedures and equipped with the proper tools and
test instruments
Installation or repairs made by unqualified persons can result in hazards to you
and others.
Failure to carefully read and follow all instructions in this manual can result in
equipment malfunction, property damage, personal injury and/or death.
Multi outdoor units
SERVICE MANUAL
ODMI-C1-1511
Multi zone

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Summary of Contents for Perfectaire 1PAMSH18-MZO2-16

  • Page 1: Table Of Contents

    Multi outdoor units Multi zone SERVICE MANUAL CONDENSING UNITS Revision B: ODMI-C1-1511 Model Numbers: 1PAMSH18-MZO2-16 1PAMSH27-MZO3-16 1PAMSH36-MZO4-16 Table of Contents Indoor Unit Combination Suggested Indoor Unit Model Numbers Dimension Of Outdoor Unit Refrigerant Cycle Diagram Installation Details Electronic Function Wiring Diagrams...
  • Page 2 CONTENTS Indoor Unit Combination ............................4 Suggested Indoor Unit Model Numbers ........................6 Dimension Of Outdoor Unit............................8 Refrigerant Cycle Diagram ............................10 Installation Details ..............................12 5.1 Wrench torque sheet for installation ....................... 12 5.2 Connecting the cables ............................12 5.3 Pipe length and the elevation ...........................
  • Page 3  Model: 1PAMSH27-MZO3-16 (W210 metal plate) ................... 113  Model: 1PAMSH36-MZO4-16 (W520 metal plate)..................1 28...

  • Page 4: Indoor Unit Combination

    1. Indoor Unit Combination Multi DC Nominal Suggested Limit Outdoor Unit capacity Combination 7+12 Multi DC Nominal Suggested Limit Outdoor Unit capacity Combination 7+18 9+12 1drive 2(M2OC) 5.2kW 7+12 None 9+18 12+12 9+12 12+18 18+18 7+7+7 Multi DC Nominal Suggested 7+7+9 Limit Outdoor Unit...
  • Page 5 12+12+12 18+18+24 12+12+18 9+9+9+9 12+18+18 9+9+9+12 7+7+7+7 9+9+9+18 7+7+7+9 9+9+9+24 7+7+7+12 9+9+12+12 7+7+7+18 9+9+12+18 7+7+9+9 9+9+12+24 7+7+9+12 9+9+18+18 7+7+9+18 9+9+18+24 7+9+9+9 9+12+12+12 7+9+9+12 9+12+12+18 7+9+9+18 9+12+12+24 7+9+12+12 9+12+18+18 7+9+12+18 9+18+18+18 7+12+12+12 12+12+12+12 7+12+12+18 12+12+12+18 9+9+9+9 12+12+12+24 9+9+9+12 12+12+18+18 9+9+9+18 9+9+9+9+9 9+9+12+12 9+9+9+9+12 9+9+12+18...

  • Page 6: Suggested Indoor Unit Model Numbers

    2. Suggested Indoor Unit Model Numbers...

  • Page 8: Dimension Of Outdoor Unit

    3. Dimension Of Outdoor Unit Dimension (mm(in.)) Model 1PAMSH18-MZO2- 16 845(33.3) 320(12.6) 700(27.6) 908(35.7) 560(22) 335(13.2) 1PAMSH27-MZO3-16 900(35.4) 315(12.4) 860(33.9) 980(38.6) 590(23.2) 333(13.1) 990(39) 345(13.6) 965(38) 1075(42.3) 624(24.6) 366(14.4) 1PAMSH36-MZO4-16...

  • Page 10: Refrigerant Cycle Diagram

    4. Refrigerant Cycle Diagram 5.1Refrigeration 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 11 5.3 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 12: Installation Details

    Additional refrigerant charge 5. Installation Details 1 drive 1 drive 3 1 drive 4 1 drive 5 5.1 Wrench torque sheet for installation Chargeless 30(98.4ft) 15(49.2f 22.5(73.8 pipe length 37.5(123ft) Outside diameter Torque Additional tightening torque Addition 15 x 15 x 15 x 15 x (length inch...
  • Page 13 and block capillary tubing. repaired. Follow the leak checking procedure as mentioned before. If the vacuum is ● Water when mixed with the refrigerant and oil achieved, close the low pressure gauge will create an acid that will damage the motor handle off and shut the vacuum pump off.

  • Page 14: Adding The Refrigerant After Running The System For Many Years

    6) Refrigerant can now be added to the system, scale depending on the scale used. Next open the low pressure valve on the gauge determine the refrigerant charge to be added. manifold set to start charging the unit with liquid 5) Start the unit in the cooling mode and lower refrigerant, keep track of the refrigerant being the set point so the unit won’t shut off during the...

  • Page 15: Evacuation After Servicing The Outdoor Unit Refrigeration Circuit

    3). Air purging of the charge hose. 0.1Mpa after pumping 50 minutes, please check if Open the handle Lo valve of the manifold valve there are some leakage points. slightly to purge air from the charge hose for 5 seconds and then close it quickly. Fully close the handle Lo valve of the manifold 4).

  • Page 16: Electronic Function

    5). Disconnect the charge hose from the vacuum more time saving when vacuum and recycle pump. refrigerant. But refer to the previous instruction when vacuum and recycle refrigerant. 2. Refrigerant charging Procedure: 1). Connect the charge hose to the charging cylinder, open the 2-way valve and the 3-way valve.

  • Page 17: Main Protection

    6.3 Main Protection If the compressor current exceeds the current limit value for 10 seconds, the compressor frequency will be limited as below table. 6.3.1 Three Minutes Delay at restart for compressor. Cooling mode: ---- 1min delay for the 1 time start-up and 3 Current Current limit...

  • Page 18: Control And Functions

    ----Preheating release condition: 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 If T4＞5℃ (41 ℉) or the capacity demand isn’t display the failure for 30 seconds and stop. The AC will restart 3 zero, preheating function will stop.
  • Page 19 Outdoor temperature (T4) T1 Ts Cooling 18℃ ~ 29℃ <17℃ ＞29℃ >84.2℉ 64.4℉~84.2℉ <62.6℉ Modify rate 100% When there is more than one indoor unit: Outdoor temperature (T4) Capacity area Cooling 17℃ ~ 25℃ <17℃ ＞25℃ Norm code (N) >77℉ 62.6℉~77℉...
  • Page 20 If any one of following items is satisfied, defrosting will stop and the machine will turn to normal heating mode. ① T3 > TempQuitDefrost_ADD ℃;. ② The defrosting time achieves 10min. ③ Turn to other modes or off. For 1PAMSH18-MZ , O2- 16 According to the final capacity request to Condition of defrosting:...
  • Page 21 For 1PAMSH18-MZO2 - 16, 1PAMSH36-MZO4-16: ----The machine has run for 10 minutes in defrosting mode. Defrosting action： DC_FAN_HI_SPD_ADD 28℃ 26℃ 4-way valve defrosting Defrosting over DC_FAN_MID_SPD_ADD 25℃ compressor 23℃ Max 10 minutes DC_FAN_MIN_SPD_ADD 22℃ frequency Cool-F9 frequency 20℃ DC_FAN_SLOW_SPD_ADD Compressor stops 19℃...
  • Page 22 3 minutes, the outdoor will receive indoor units( of capacity demand) T2B information and calculate the average of them. After comparing each indoor’s T2B with the average, the outdoor gives following modification commands: If the T2B＞average, the relevant valve needs more open;...

  • Page 23: Wiring Diagrams

    7. Wiring Diagrams 8.1 Wiring diagram of 1 drive 2 outdoor 1PAMSH18-MZO2- 16,...
  • Page 24 PCB board of 1PAMSH18-MZ , O2- 16...
  • Page 25 IPM board of 1PAMSH18-MZO2- 16...
  • Page 27 8.2 Wiring diagram of 1 drive 3 outdoor 1PAMSH27-MZO3-16...
  • Page 30 PCB board of 1PAMSH27-MZO3-16...
  • Page 31 IPM board of 1PAMSH27-MZO3-16...
  • Page 32 8.3 Wiring diagram of 1 drive 4 outdoor 1PAMSH36-MZO4-16...
  • Page 33 PCB board of 1PAMSH36-MZO4-16...
  • Page 34 IPM board of 1PAMSH36-MZO4-16...
  • Page 35 PFC board of 1PAMSH36-MZO4-16...
  • Page 36 8.4 Wiring diagram of 1 drive 5 outdoor...

  • Page 38: Troubleshooting

    8. Troubleshooting 8.1Safety Because of there are capacitors in PCB and relative circuit in outdoor unit, even shut down the power supply, electricity power still are kept in capacitors, do not forget to discharge the electricity power in capacitor. The value of resistance is about 1500 ohm to 2000 ohm...

  • Page 39: Indoor Unit Error Display

    Electrolytic Capacitors (HIGH VOLTAGE! CAUTION!) Bulb (25-40W) The voltage in P3 and P4 in outdoor PCB is high voltage about 310V The voltage in P5 and P6 in outdoor PCB is high voltage about 310V 8.2 Indoor Unit Error Display Vertu series &...
  • Page 40 Console series Operation Timer De-frost Failure Open or short circuit of T1 temperature sensor ★ Open or short circuit of T2 temperature sensor ★ Communication malfunction between indoor and outdoor units ★ Indoor EEPROM malfunction ★ ★ Outdoor fan speed has been out of control ...
  • Page 41 Open or short circuit of T1 temperature sensor —— ★ Open or short circuit of T2 temperature sensor —— ★ Communication malfunction between indoor and ★ outdoor units Water-level alarm malfunction —— ★ Indoor EEPROM malfunction —— ★ ★ IPM module protection ★...

  • Page 42: Outdoor Unit Display

    ★ flash at 2.5Hz,  light, X extinguished, , ◎flash at 0.5Hz Note: Digital display is only available for duct type. Oasis series: Operation lamp Timer lamp Display LED STATUS Error —— ★ 1 time Indoor EEPROM malfunction ★ 2 times Communication malfunction between indoor and outdoor units ——...
  • Page 43 Display Remark Normal display Display running frequency, running state or malfunction code No. of indoor units in good connection Actual data Display Number of indoor unit Outdoor unit running mode code Off:0,Fan only 1, Cooling:2, Heating:3, Forced cooling:4 A indoor unit capacity B indoor unit capacity The capacity unit is horse power.
  • Page 44 C Indoor unit capacity demand code D Indoor unit capacity demand code E Indoor unit capacity demand code Outdoor unit amendatory capacity demand code Forced cooling:7 The frequency corresponding to the total indoor units amendatory capacity demand The frequency after the frequency limit The frequency sending to compressor control chip A indoor unit evaporator outlet temp.(T...
  • Page 45 The last error or protection code 00 means no malfunction and protection 8.3.2 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 “- -” ...
  • Page 46 8.3.3 Outdoor unit error display Display LED STATUS Error Error Error (MTBI(MTBU)) (Vertu/Luna) (Oasis) Outdoor EEPROM malfunction Communication malfunction between indoor and outdoor units Communication malfunction between IPM board and outdoor main —— —— —— board Open or short circuit of outdoor temperature sensor(T3、T4、T5、 T2B) Voltage protection ——...

  • Page 47: Diagnosis And Solution

    8.4 Diagnosis and Solution 8.4.1 Indoor unit trouble shooting 8.4.1.1 Indoor EEPROM malfunction diagnosis and solution. Malfunction decision PCB main chip does not receive feedback from EEPROM chip conditions ● Installation mistake ● PCB faulty Trouble shooting: Shut off the power supply and turn it on 1 minute later.
  • Page 48 8.4.1.2 Communication malfunction between indoor and outdoor units diagnosis and solution. Malfunction decision Indoor unit does not receive the feedback from outdoor unit conditions during 120 seconds. Supposed causes ● Wiring mistake ● Indoor or outdoor PCB faulty Trouble shooting:...
  • Page 49 Indoor / outdoor units communication error Start: Power off , then Power on the A/C by the Breaker. (reconnect the power wire). Is it still displaying the error code? Check wiring on the outdoor and indoor terminal follow the wiring diagram. Is all Reconnect the wiring connecting correctly? Reconnect the wiring...
  • Page 50 Pic 1:Use a multimeter to test the DC voltage between L2 port and S port of outdoor unit. The red pin of multimeter connects with L2 port while the black pin is for S port. When AC is normal running, the voltage will move alternately between positive value and negative value.
  • Page 51 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. (1PAMSH36-MZO4-16) Check point button, press 18 times to check how many indoor units are connected.
  • Page 52 8.4.1.3 zero-crossing signal error diagnosis and solution. Malfunction decision When PCB does not receive zero crossing signal feedback for conditions 4 minutes or the zero crossing signal time interval is abnormal. Supposed causes ● Connection mistake ● PCB faulty Trouble shooting: Check if the connections and Correct the connections.
  • Page 53 8.4.1.4 Indoor fan speed has been out of control diagnosis and solution. Malfunction decision When indoor fan speed keeps too low (300RPM) for certain time, the unit conditions will stop and the LED will display the failure. Supposed causes ● Wiring mistake ●...
  • Page 54 Index 1: 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 55 8.4.1.5 open or short circuit of temperature sensor diagnosis and solution. Malfunction decision If the sampling voltage is lower than 0.06V or higher than conditions 4.94V, the LED will display the failure. Supposed causes ● Wiring mistake ● Sensor faulty ●...
  • Page 56 8.4.1.6 IPM module or IGBT over-strong current protection diagnosis and solution. Malfunction decision When the voltage signal that IPM send to compressor drive conditions chip is abnormal, the display LED will show “P6” and AC will turn off. Supposed causes ●...
  • Page 57 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 Check whether the connecting Connect it tightly,...
  • Page 58 8.4.1.7 Over voltage or too low voltage protection diagnosis and solution. Voltage protection Check the voltage of outdoor unit power supply, whether the voltage Check the power supply between L(L1) and N (L2) is about 187~253VAC Check whether the voltage of IPM board P and N is normal? DC277-356V for 18-27KBtu/h;...
  • Page 59 8.4.1.8 Temperature protection of compressor top diagnosis and solution. Malfunction decision If the sampling voltage is not 5V, the LED will display the conditions failure. Supposed causes ● Wiring mistake ● Over load protector faulty ● System block ● Outdoor PCB faulty Temperature protection of compressor top Whether compressor...
  • Page 60 Water-level alarm malfunction (For cassette/A5 duct) 8.4.1.10 diagnosis and solution Malfunction decision If the sampling voltage is not 5V, the LED will display the conditions failure. Supposed causes ● Wiring mistake ● Water-level switch faulty ● Water pump faulty ● Indoor PCB faulty Power off, then restart the unit 3 minutes Power off, then restart the unit 3 minutes later.
  • Page 61 8.4.1.11 Mode conflict. Error Code Malfunction decision The indoor units cannot work cooling mode and heating at same time. conditions Heating mode has a priority. Unit action ● Suppose Indoor unit A working in cooling mode or fan mode, and indoor unit B is set to heating mode, then A will change to off and B will work in heating mode.
  • Page 62 8.4.2 Outdoor unit trouble shooting 8.4.2.1 E0(Outdoor EEPROM malfunction) error diagnosis and solution Error Code Malfunction decision PCB main chip does not receive feedback from EEPROM chip conditions Supposed causes ● Installation mistake ● PCB faulty Trouble shooting: Outdoor EEPROM malfunction Outdoor EEPROM malfunction Power off, then restart the Power off, then restart the...
  • Page 63 8.4.2.2 E2(Communication malfunction between indoor and outdoor units) error diagnosis and solution. Error Code Malfunction decision Indoor unit does not receive the feedback from outdoor unit conditions during 120 seconds or outdoor unit does not receive the feedback from any one indoor unit during 180 seconds. Supposed causes ●...
  • Page 64 Communication malfunction between indoor and outdoor units Start: Power off , then Power on the A/C by the Breaker. (reconnect the power wire). Is it still displaying the error code? Check wiring on the outdoor and indoor terminal follow the wiring diagram. Is all Reconnect the wiring connecting correctly? Reconnect the wiring...
  • Page 65 Pic 1:Use a multimeter to test the DC voltage between L2 port and S port of outdoor unit. The red pin of multimeter connects with L2 port while the black pin is for S port. When AC is normal running, the voltage will move alternately between positive value and negative value.
  • Page 66 Pic 2: :IPM (For qua-zone) Power, Self-Check Operating 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 67 8.4.2.3 E3(Communication malfunction between IPM board and outdoor main board) error diagnosis and . Error Code Malfunction decision PCB main chip does not receive feedback from IPM module conditions during 60 seconds. Supposed causes ● Wiring mistake ● PCB faulty Trouble shooting: Communication malfunction between IPM board and outdoor main board...
  • Page 68 Remark: Use a multimeter to test the DC voltage between black pin and white pin of signal wire The normal value should be around 5V. Use a multimeter to test the DC voltage between black pin and red pin of signal wire. The normal value should be around 12V.
  • Page 69 8.4.2.4E4(open or short circuit of outdoor temperature sensor) diagnosis and solution F1/F2/F3/F4/F5 (open or short circuit of indoor coil temperature sensor) diagnosis and solution. Error Code E4/F1/F2/F3/F4/F5 Malfunction decision If the sampling voltage is lower than 0.06V or higher than conditions 4.94V, the LED will display the failure.
  • Page 70 8.4.2.5 E5(Voltage protection) error diagnosis and solution. Error Code Malfunction decision An abnormal voltage rise or drop is detected by checking the conditions specified voltage detection circuit. Supposed causes ● Power supply problems. ● System leakage or block ● PCB faulty Trouble shooting: Voltage protection Check the voltage of...
  • Page 71 IPM (for dual/tri- zone) IPM (for qua- zone) P-N (for dual/tri-zone)
  • Page 72 P-N (for qua-zone)
  • Page 73 bridge rectifier (for dual/tri-zone) bridge rectifier (for qua-zone)
  • Page 74 Remark: Measure the DC voltage between + and - port. The normal value should be 190V~250V.
  • Page 75 8.4.2.6 E6(PFC module protection) error diagnosis and solution. Error Code Malfunction decision When the voltage signal that PFC sends to main control board conditions is abnormal, the display LED will show “E6” and AC will turn off. Supposed causes ● Wiring mistake ●...
  • Page 76 Inductance Two ports of the inductance...
  • Page 78 8.4.2.7 E8(Outdoor fan speed has been out of control) diagnosis and solution(Only for DC fan motor models). Error Code Malfunction decision When outdoor fan speed keeps too low (300RPM) or too high(2400RPM) conditions for certain time, the unit will stop and the LED will display the failure. Supposed causes ●...
  • Page 79 Index 1: 1. 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 81 8.4.2.8 P0(Temperature protection of compressor top) error diagnosis and solution. (Only for M3OD- 27HRDN1-M) Error Code If the sampling voltage is not 5V, the LED will display the failure. Malfunction decision conditions ● Wiring mistake Supposed causes ● Over load protector faulty ●...
  • Page 83 8.4.2.9 P1(High pressure protection) error diagnosis and solution. (Only for 1PAMSH36-MZO4-16) Error Code Malfunction decision If the sampling voltage is not 5V, the LED will display the conditions failure. Supposed causes ● Wiring mistake ● Over load protector faulty ● System block ●...
  • Page 84 High pressure protection High pressure protection Whether the wiring Whether the wiring between the high pressure between the high pressure switch and main control switch and main control Connect it well Connect it well board is connected well or board is connected well or correctly correctly Whether the high...
  • Page 86 8.4.2.10 P2(Low pressure protection) error diagnosis and solution. (Only for 1PAMSH36-MZO4-16) Error Code Malfunction decision If the sampling voltage is not 5V, the LED will display the conditions failure. Supposed causes ● Wiring mistake ● Over load protector faulty ● System block ●...
  • Page 87 Low pressure protection Low pressure protection Whether the wiring Whether the wiring between the low pressure between the low pressure protector and main control protector and main control Connect it well Connect it well board is connected well or board is connected well or correctly correctly Whether the low...
  • Page 89 8.4.2.11 P3(Current protection of compressor) error diagnosis and solution. Error Code Malfunction decision If the outdoor current exceeds the current limit value, the LED conditions will display the failure. Supposed causes ● Wiring mistake ● Over load protector faulty ● System block ●...
  • Page 91 8.4.2.12 P4(Temperature protection of compressor discharge) error diagnosis and solution. Error Code Malfunction decision When the compressor discharge temperature(T5) is more conditions than 115℃ for 10 seconds, the compressor will stop restart till T5 is less than 90℃. Supposed causes ●...
  • Page 92 8.4.2.13 P5(High temperature protection of condenser) error diagnosis and solution. Error Code Malfunction decision When outdoor pipe temperature is more than 65°C, the unit will stop, and unit runs again when outdoor pipe temperature is less conditions than 52°C Supposed causes ●...
  • Page 93 8.4.2.14 P6(IPM module protection) error diagnosis and solution. Error Code Malfunction decision When the voltage signal that IPM send to compressor drive conditions chip is abnormal, the display LED will show “P6” and AC will turn off. Supposed causes ● Wiring mistake ●...
  • Page 94 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 Check whether the connecting Connect it tightly,...
  • Page 95 8.4. 2.15 The cooling operation or heating operation does not operate. Supposed causes ● 4-way valve faulty Check of 4-way, please refer to part 5 in 9.5 Trouble Criterion Of Main Parts. 8.4.2.16 When cooling, heat exchanger of non-operating indoor unit frosts. When heating, non-operating indoor unit get warm.

  • Page 96: Trouble Criterion Of Main Parts

    8.5 Trouble Criterion Of Main Parts. Spec. Indoor unit Model 9k Vertu 12k Vertu 18k Vertu Indoor fan motor RPG20B RPG20B RPG28H Model 7k Luna 9k Luna 12k Luna 18k Luna Indoor fan motor RPG20B RPG20B RPG20B RPG28H Model 9k Oasis 12k Oasis 18k Oasis Indoor fan motor...
  • Page 97 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 98 Appendix 1 Temperature Sensor Resistance Value Table (℃--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 10.000 1.96532...
  • Page 99 Appendix 2 Unit: ℃---K Discharge temp. sensor table 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 11.38 3.203 384.3 52.53 10.99 3.113 363.3 50.28 10.61 3.025 343.6 48.14 10.25 2.941...
  • Page 100 Appendix 3: 10 11 12 13 14 15 16 17 18 19 20 21 22 ℃ 48 50 52 54 56 58 60 62 64 66 68 70 72 ℉ 23 24 25 26 27 28 29 30 31 32 33 34 35 ℃...
  • Page 101 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 Normal resistance Digital tester Digital tester resistance value value...
  • Page 102 Position Resistance Value YDK53- YDK70-6FB YDK180-8GB YSK27-4G YSK68-4B YDK45-6B YSK25-6L 6FB(B) 56Ω±8% 24.5Ω±8% 317Ω±8% 145Ω±8% 345Ω±8% 627Ω±8% 88.5Ω±8% Black - (20℃) (20℃) (20℃) (20℃) (20℃) (20℃) (20℃) 76Ω±8% 19Ω±8% 252Ω±8% 88Ω±8% 150Ω±8% 374.3Ω±8% 138Ω±8% Red - Yellow (20℃) (20℃) (20℃) (20℃) (20℃) (20℃)
  • Page 103 6.EXV check Disconnect the connectors.
  • Page 104 Resistance to EXV coil Color of lead wire Normal Value Red- Blue Red - Yellow About 50Ω Brown-Orange Brown-White...
  • Page 105 Red- Blue Red - Yellow...
  • Page 106 Brown-Orange Brown-White...

  • Page 107: Disassembly Instructions

    9. Disassembly Instructions  Model: 1PAMSH18-MZ O2- 16 Part name Procedures Remarks How to remove the panel plate. Screws of top cover Panel plate 1) Stop operation of the air conditioner and turn “OFF” the power breaker. Screws of front panel Screws of right front side panel 2) Remove the screws of top Screws of top cover...
  • Page 108 5) Remove the screws of big handle, and remove the big Screws of handle.(4 screws) big handle 6) Remove two screws of terminal board, four screws of water collector and Screws of water collector fourteen screws of right- rear panel, and remove the Screws of right-rear panel.
  • Page 109 4) Remove the electrical ④ control box cover. 5) Disconnect the fan motor connector CN37(5p,white) from the PCB board. ⑤ Remove the fan motor after unfastening four fixing screws. ⑥ How to remove the electrical Electrical ③ parts. parts 1) Perform work of item 1,2. 2) Remove the ten screws fixing the IPM board.
  • Page 110 CN38(2p,white) CN21(5p,white) CN39(2p,blue) L-OUT(red) N-OUT(blue) CN17 Remove the IPM board. CN15 Disconnect the connectors and wires connected from PCB and other parts. Connectors: CN25/CN23 CN18/CN19 CN17:T3/T4 temp. sensor (2p/2p,white) CN7: Tdischarge temp. sensor (2p,white) CN15:T2B-A,B temp. sensor (2p/2p,white) CN18/CN19: Electronic expansive valve A,B (6p/6p,red/red) CN25/CN23: S-A,S-B CN5/CN6...
  • Page 111 Disconnect the grounding ⑧ wire (yellow-green) after removing the big handle and the right-rear panel. Remove the PCB board. How to remove the compressor. Compressor 1) Perform work of item 1,2,3. 2) Remove the electrical control box and partition plate. 3) Extract refrigerant gas.
  • Page 112 Reactor How to remove the reactor 1) Perform work of item 1,2 2) Unfasten the connector between IPM and reactor. 3) Remove two screws of cover of inductance, and remove the cover of inductance Screws of cover of inductance 4) Disconnect two pieces of wires connected from the cover of inductance.
  • Page 113  Model: 1PAMSH27-MZO3-16 (W210 metal plate) Part name Procedures Remarks How to remove the panel plate. Panel plate Screws of top cover 1) Stop operation of the air conditioner and turn “OFF” the power breaker. 2) Remove the screws of top cover, and remove the top cover.
  • Page 114 Screws of big handle Screws of right-rear panel Screws of water collector Screws of terminal board How to remove the fan ass’y. Fan ass’y 1) Remove the top cover, right front side panel and front panel from item 1.step 1~4 2) Remove the hex nut fixing the fan.
  • Page 115 ④ 5) Disconnect the fan motor connector CN11(5p,white) from the PCB board. ⑤ 6) Remove the fan motor after unfastening six fixing screws. Note: There are two kinds of screws. Please pay attention to it when install the fan motor. ⑥...
  • Page 116 Disconnect following 3 pieces of connection wires and connectors between IPM and PCB. CN21(5p,white) L-OUT(red) N-OUT(blue) Remove the IPM board. ⑥ CN18/CN19/CN22 CN17 Disconnect connectors and wires connected from PCB and other parts. Connectors: CN17:T3/T4 temp. sensor (2p/2p,white) CN7: Tdischarge temp. sensor (2p,white) CN12:Ttop temp.
  • Page 117 CN4:L2-IN (black) Disconnect the grounding wire (yellow-green) CN20/ CN23/ after removing the big handle CN25 and the right-rear panel. Remove the PCB board. CN1/CN2 CN5/CN6 ⑧ How to remove the compressor. Compressor 1) Perform work of item 1,2,3. 2) Remove electrical control box and partition plate.
  • Page 118 washers fixing compressor to bottom plate. ⑦ 8) Lift the compressor. Reactor How to remove the reactor 1) Perform work of item 1,2 2) Unfasten connector between IPM and reactor. 3) Remove screws cover of inductance, and remove cover inductance Screws of cover of inductance...
  • Page 119 How to remove the expansion expansion valve valve 1) Perform work of item 1,2. 2) Remove the electrical parts from item 3. Expansion valves 3) Remove the coils. 4) Detach the welded parts of . Coils expansion valves and pipes.
  • Page 120  Part name Procedures Remarks How to remove the panel plate. Screws of top cover Panel plate 1) Stop operation of the air conditioner and turn “OFF” the power breaker. 2) Remove the screws of top cover, and remove the top cover.
  • Page 121 Screws of top cover Screws of right- rear panel Screws of front panel...
  • Page 122 How to remove the fan ass’y. Fan ass’y 1) Remove the top cover, right front side panel and front panel from item 1.step 1~4 2) Remove the hex nut fixing ② the fan. 3) Remove the fan. 4) Remove electrical ④...
  • Page 123 Disconnect following 5 ④ pieces of connection wires and connectors between IPM and PCB. L-OUT(red) N-OUT(blue) CN38(2p,white) CN21(5p,white) CN39(2p,blue)
  • Page 124 Remove the IPM board. ⑥ 7) Disconnect the connectors and wires connected from PCB and other parts. Connectors: CN17:T3/T4 temp. sensor (2p/2p,white) CN7: Tdischarge temp. sensor CN17 (2p,white) CN15:T2B-A,B,C temp. sensor (2p/2p/2p,white) CN18/CN19/CN22: Electronic expansive valve A,B,C (6p/6p/6p,red/red/red) CN25/CN23/CN20: S-A,S-B,S-C (3p/3p/3p,white/white/white) CN15 CN18/CN19/CN22...
  • Page 125 ⑧ How to remove the compressor. Compressor 1) Perform work of item 1,2,3. 2) Remove electrical control box and partition plate. 3) Extract refrigerant gas. 4) Remove sound ⑥ insulation material crankcase heating cable. 5) Remove terminal cover of compressor, and disconnect wires of compressor thermo and compressor from the terminal.
  • Page 126 Reactor How to remove the reactor Screws of cover of 1) Perform work of item 1,2 inductance 2) Unfasten the connector between IPM and reactor. 3) Remove four screws cover of inductance, and remove cover inductance 4) Disconnect two pieces of wires connected from the cover of inductance.
  • Page 127 How to remove the expansion expansion valve valve 1) Perform work of item 1,2. 2) Remove the electrical parts from item 3. Expansion 3) Remove the coils. valves 4) Detach the welded parts of expansion valves and pipes. . Coils...
  • Page 128  Model: 1PAMSH36-MZO4-16 (W520 metal plate) Part name Procedures Remarks How to remove the panel plate. Screws of top cover Panel plate Stop operation of the air conditioner and turn “OFF” the power breaker. Screws of front panel Screws of right front side panel 2) Remove the screws of top Screws of top cover cover, and remove the top...
  • Page 129 Screws of big handle Screws of right- rear panel Screws of water collector Screws of terminal board...
  • Page 130 How to remove the fan ass’y. Fan ass’y 1) Remove the top cover, right front side panel and front panel from item 1.step 1~4 ② 2) Remove the hex nut fixing the fan. 3) Remove the fan. 4) Remove the electrical control box cover after remove 5 screws.
  • Page 131 ③ 4) Disconnect following connection wires and connectors on the PFC. C and CN12: (yellow-yellow), connected to PFC inductance. R and CN12: (blue-red), CN12 CN12 ⑤ connected to rectifier. + and - : (red-blue), connected to P1 and P3 on PCB. CN7: (4p,red), connected to CN11 on PCB.
  • Page 132 7) Disconnect following connection wires and connectors between PCB and other components. P4: (blue), connected to N on IPM. P2: (red), connected to P on IPM. P1: (red), connected to + on PFC. P3: (blue), connected to – on PFC. RY4: (red), connected to rectifier.
  • Page 133 grounding wires of PCB. Remove the PCB board. ⑧ How to remove the compressor. ⑥ Compressor 1) Perform work of item 1,2,3 2) Remove electrical control box and partition plate. 3) Extract refrigerant gas. 4) Remove sound insulation material crankcase heating cable. 5) Remove terminal cover of compressor, and disconnect wires of compressor thermo...
  • Page 134 4-way How to remove the 4-way valve valve 1) Perform work of item 1,2. 2) Extract refrigerant gas. 3) Remove the electrical parts from item 3. Coil 4) Remove fixing screw of the coil, and remove the coil. Welded parts 5) Detach the welded parts of 4-way valve and pipe.
  • Page 135 Part name Procedures Remarks How to remove the panel plate. Screws of top cover Panel plate Stop operation of the air conditioner and shut off the power breaker. Screws of right front side panel 2) Remove the screws of top cover, and remove the top cover.
  • Page 136 Screws of front panel Screws of big handle Screws of right- rear panel...
  • Page 137 Screws of terminal board How to remove the fan ass’y. Fan ass’y 1) Remove the top cover, right front side panel and front panel from item 1.step 1~4 ② 2) Remove the hex nut fixing the fan. 3) Remove the fan. 4) Remove the electrical control box cover after remove 5 screws.
  • Page 138 How to remove the electrical IPM& PFC board Electrical parts. parts 1) Perform work of item 1, 2. 2) Remove 2 screws to take PCB board down the terminal board. 3) Remove 3 screws to take off the reactor. 4) Disconnect following connection wires...
  • Page 139 6) Disconnect following connection wires connectors on the PCB. L and N: (white-black), power input of the PCB. CN2 and CN4: (red-black), power supply to reactor. CN5: (5p, white) 5VDC and 12VDC from CN55 of IPM&PFC board. CN6: (7p, white) PFC and DC fan CN7, CN13, CN16, CN21, signal from CN9 of IPM&PFC...
  • Page 140 How to remove the compressor. ⑥ Compressor 1) Perform work of item 1,2,3 2) Remove electrical control box and partition plate. 3) Extract refrigerant gas. 4) Remove sound insulation material crankcase heating cable. 5) Remove terminal cover of compressor, and disconnect wires of compressor thermo and compressor from the terminal.
  • Page 141 How to remove the expansion expansion valve valve Coils 1) Perform work of item 1,2. 2) Remove the electrical parts from item 3. 3) Remove the coils. Expansion 4) Detach the welded parts of valves expansion valves and pipes.

This manual is also suitable for:

1pamsh27-mzo3-161pamsh36-mzo4-16

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