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SERVICE MANUAL

DC INVERTER MULTI ZONE
DUAL (2), TRIPLE (3) and QUAD (4) CIRCUIT
MULTI SPLIT OUTDOOR UNITS
HEAT PUMP
YN018GMFI16M2D (2 Zone)
YN027GMFI16M3D (3 Zone)
YN036GMFI16M4D (4 Zone)
DC MULTI OUTDOOR UNITS
1

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Troubleshooting

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   Summary of Contents for Pioneer YN018GMFI16M2D

  • Page 1: Service Manual

    SERVICE MANUAL DC INVERTER MULTI ZONE DUAL (2), TRIPLE (3) and QUAD (4) CIRCUIT MULTI SPLIT OUTDOOR UNITS HEAT PUMP YN018GMFI16M2D (2 Zone) YN027GMFI16M3D (3 Zone) YN036GMFI16M4D (4 Zone) DC MULTI OUTDOOR UNITS...

  • Page 2: Table Of Contents

    CONTENTS 1. General information of Outdoor Units ..........2 2.Features ....................3 3.Dimensions ..................... 4 4. Wiring Diagram ..................5 5. Refrigeration Cycle Diagram ..............8 6. Indoor units combination ..............10 7. Installation Details ................11 8. Electronic control function ..............20 9.

  • Page 3: General Information Of Outdoor Units

    1. General information of Outdoor Units Model name Dimension (mm(in)) Compressor YN018GMFI16M2D 845x320x700(33.3x12.6x27.6) DA130S1C-20FZ YN027GMFI16M3D 845x320x700(33.3x12.6x27.6) DA150S1C-20FZ YN036GMFI16M4D 990x345x965(39x13.6x38) TNB306FPGMC-L...

  • Page 4: Features

    2.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

    3. Dimensions mm(in) Model YN018GMFI16M2D 845((33.3) 320(12.6) 700(27.6) 908(35.7) 560(22) 335(13.2) YN027GMFI16M3D YN036GMFI16M4D 990(39) 345(13.6) 965(38) 1075(42.3) 624(24.6) 366(14.4)

  • Page 6: Wiring Diagram

    4. Wiring Diagram YN018GMFI16M2D...

  • Page 7

    YN027GMFI16M3D...

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    YN036GMFI16M3D...

  • Page 9: Refrigeration Cycle Diagram

    5. Refrigeration Cycle Diagram 5.1Refrigeration circuit drawing of inverter dual-zone 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) temp.

  • Page 10

    5.3 Refrigeration circuit drawing of inverter quad-zone 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 HEAT...

  • Page 11: Indoor Units Combination

    6. Indoor units combination 6.1 Indoor unit combination for YN018GMFI16M2D Combinations  Comb.  Unit A  Unit B  — 9k  Dual(1x1)  — 12k  — 18k  9k  9k  Dual (1x2)  9k  12k  12k  12k  6.2 Indoor unit combination for YN027GMFI16M3D Combinations  Comb.  Unit A  Unit B  Unit C  —...

  • Page 12: Installation Details

    7. Installation Details 7.1 Wrench torque sheet for installation Outside diameter Torque Additional tightening torque inch N.cm N.cm Ф6.35 1500(153kgf.cm) 1600(163kgf.cm) Ф9.52 2500(255kgf.cm) 2600(265kgf.cm) 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. For power line: Unit Dual-zone(18K outdoor unit)

  • Page 13

    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. ●...

  • Page 14

    the meter does not indicate -0.1Mpa 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).

  • Page 15

    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 set and the charging cylinder, and set the 2-way and 3-way valves to the open position.

  • Page 16

    6).When the electronic scale displays the proper weight (refer to the table), disconnect the charge hose from the 3-way valve’s service port immediately and turn off the air conditioner before disconnecting the hose. 7). Mount the valve stem caps and the service port Use torque wrench to tighten the service port cap to a torque of 18N.m.

  • Page 17

    conditioner before disconnecting the hose. 7). Mount the valve stem caps and the service port Use torque wrench to tighten the service port cap to a torque of 18N.m. Be sure to check for gas leakage. 7.6 Re-installation while the indoor unit need to be repaired 1.

  • Page 18

    Disconnect the charge set, and tighten the 2-way and 3-way valve’s stem nuts. Use a torque wrench to tighten the 3-way valves service port cap to a torque of 1.8 kgf.m. Be sure to check for gas leakage. 2. Air purging by the refrigerant Procedure: 1).

  • Page 19

    6). Disconnect the charge set and the charging cylinder, and set the 2-way and 3-way valves to the open position Be sure to use a hexagonal wrench to operate the valve stems. 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.

  • Page 20

    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 21: Electronic Control Function

    8. 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 temp.

  • Page 22

    compressor discharge temp. is 105 degree. If the indoor unit is not connected, the digital display tube will show: “――”) Inverter current AD data EXV open angle for 1# indoor unit Actual data divide 8 EXV open angle for 2# indoor unit Actual data divide 8 EXV open angle for 3# indoor unit Actual data divide 8...

  • Page 23

    C indoor unit room temp.(T D indoor unit room temp.(T E indoor unit room temp.(T A indoor unit evaporator outlet temp.(T B indoor unit evaporator outlet temp.(T C indoor unit evaporator outlet temp.(T If the temp. is lower than -9 degree, the digital display tube will show “-9”.If the temp.

  • Page 24

    The following items from 6.4.1 to 6.4.6 are for the explanation of the point check functions. 8.4.1 Frequency of compressor: Display Frequency of compressor (Hz) Stand by 8.4.2 Running mode: Display Corresponding mode Cooling mode Heating mode 8.4.3 Capacity demand: Cooling mode Capacity 2000-2...

  • Page 25

    8.4.4Number of indoor unit Display Number of indoor unit 8.4.5 Opening degree of electronic expansion valve: Actual opening degree equals the display data divided 8 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.

  • Page 26: Cooling Mode

    Cooling mode: Current frequency(Hz) Current limit value(A) Frequency limit COOL_F10 ICOOLLMT6 Decrease the frequency to COOL_F4 and run at COOL_F9 ICOOLLMT5 COOL_F4 for 3 minutes. COOL_F8 ICOOLLMT4 After that, the frequency will be adjusted according to the COOL_F7 ICOOLLMT3 capacity demand and rise to the upper level every 3 minutes COOL_F6 ICOOLLMT2...

  • Page 27

    If the compressor frequency keeps lower than RECOILINFRE for 2hours,the AC will rise the frequency to RECOILFRE for 3mins and then resume to former frequency. Model RECOILINFRE YN018GMFI16M2D YN027GMFI16M3D YN036GMFI16M4D During the oil return process, the EXV and indoor units keep the current running mode, the frequency...

  • Page 28

    8.5.9 Compressor preheating functions ----Preheating permitting condition: If T4(outdoor ambient temperature)<3 and newly powered on or if T4<3 and compressor has stopped for over 3 hours, the compressor heating cable will work. ----Preheating mode: A weak current flow through the coil of compressor from the wiring terminal of compressor, then the compressor is heated without operation.

  • Page 29: Troubleshooting

    9. Troubleshooting 9.1 Indoor unit error code explanation: Wall Mounted Indoor Units: ODU Error Display digital tube LED STATUS code Indoor EEPROM malfunction —— Indoor/ outdoor units communication error —— Zero-crossing signal error —— Indoor fan speed has been out of control ——...

  • Page 30

    Cassette / Ceiling &Floor Models: Operation Timer De-frost Alarm LED STATUS ★ Open or short circuit of T1 temperature sensor ★ Open or short circuit of T2 temperature sensor ★ Indoor / outdoor units communication error ★ Full-water malfunction ★ ★...

  • Page 31

    9.2 Outdoor unit error code explanation: Display digital Error LED STATUS Error tube (Split (A5 Duct type) Outdoor EEPROM malfunction No A Indoor unit coil outlet temp. sensor or connector of sensor is defective No B Indoor unit coil outlet temp. sensor or connector of sensor is defective No C Indoor unit coil outlet temp.

  • Page 32

    YN027GMFI16M3D YN036GMFI16M4D models: 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 No A Indoor unit coil outlet temp. sensor or connector of sensor is defective No B Indoor unit coil outlet temp.

  • Page 33: Trouble Shooting

    9.3 Trouble shooting 9.3.1 Indoor unit trouble shooting 9.3.1.1 Indoor EEPROM malfunction Shut off the power supply and turn it on 1 minute later. Is it still displaying the error code? If the EEPROM chip is welded on PCB, replace the PCB directly.

  • Page 34

    9.3.1.2 Indoor / outdoor unit communication error...

  • Page 35

    Pic 1: Measure the voltage of L2 to S (Vs), is it moving alternately between positive value and negative value? PIC 2, Check the wiring. PIC 3: IPM (For dual/tri/quad-zone) PFC (quad-zone only) PIC4: Main board LED when power on and unit standby. PIC 5: check point bottom, press 18 times for check how many indoor units are connected.

  • Page 36

    9.3.1.3 Zero-crossing signal error 9.3.1.4 Indoor fan speed has been out of control (DC fan motor) Shut off the power supply and turn it on 1 minute later. Is it The unit operates normally. still displaying the error code? Shut off the power supply, Replace indoor fan rotate the fan by hand.

  • Page 37

    9.3.1.5 Indoor fan speed has been out of control (AC fan motor) Shut off the power supply and turn it on 1 minute The unit operates normally. later.Is it still displaying the error code? S h u t o f f t h e p o w e r Disassembly the supply, rotate the cross connection between...

  • Page 38

    9.3.1.6 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 9.3.1.7 Full-water malfunction (For cassette/ceiling &Floor/ duct type) If the water-level switch...

  • Page 39

    9.3.1.8 Outdoor temp. too low protection(Optional for some models) 9.3.2 Outdoor unit trouble shooting 9.3.2 1 Outdoor EEPROM malfunction (ODU E0) Outdoor EEPROM malfunction If the EEPROM chip is welded on PCB, replace the PCB directly. Otherwise, Insert the EEPROM well check whether the EEPROM chip plugged in PCB well?

  • Page 40

    9.3.2.2 Voltage protection (ODU E5) 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 220~240VAC Check whether the voltage of IPM board P and N is normal? DC277-356V for 18-27KBtu/h;...

  • Page 41

    9.3.2.3 Communication malfunction between IPM board and outdoor main board (ODU E7) 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 42

    9.3.2.4 Temperature protection of compressor discharge (ODU P0) 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 43

    9.3.2.5 Temperature protection of compressor top (ODU P0)

  • Page 44

    YN036GMFI16M4D 9.3.2.6 High pressure protection (ODU P1) (Only for 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...

  • Page 45

    YN036GMFI16M4D 9.3.2.7 Low pressure protection (ODU P2) (Only for...

  • Page 46

    9.3.2.8 Current protection of compressor (ODU P3) Current protection of compressor Judge 1: Check whether the input current of the power supply wire is more than 12.5A (For 27K, it is 14.5A..For 36K, it is 20A) Check whether the refrigerant system is ok Judge 2: Check whether the outdoor ambient...

  • Page 47

    9.3.2.9 IPM module protection (ODU P4) IPM module protection Check whether the voltage Check whether the Regulate it to correct, range of P-N on IPM module is input power supply is then check whether the normal? DC277-356V for 18- correct? 220-240V, 1N, system can work 27KBtu/h;...

  • Page 48

    9.3.2.10 High temperature protection of condenser (ODU P6) When outdoor pipe temperature is more than 65°C, the unit will stop, and unit runs again when outdoor pipe temperature is less than 52°C. High temperature protection of condenser Replace the temperature sensor Check whether the condenser temperature is more than 65°C...

  • Page 49

    YN036GMFI16M4D 9.3.2.11 PFC module protection (ODU PF) (Only for PFC module protection Check whether the connecting line between Connect it tightly, check normal or not main board and the PFC module is connected tightly Check whether the voltage range of P-N on IPM Replace the outdoor main board module is normal? DC277- 356V for 18-27KBtu/h;...

  • Page 50

    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 51

    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 52

    Appendix 3 1. Reference voltage data: Rectifier : Input :220-230V(AC), output :310V(DC) Inverter module: U,V, W 3ph. Result 60-150V(AC) 60-150V(AC) 60-150V(AC) DC 310V 2. Check the Diode Bridge component ( In wiring diagram, rectifier) Remark: If this part is abnormal, the LED will not light. Multi-meter Result Forward Resistance...

  • Page 53

    Appendix 4: 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 54

    Appendix 5: Spec. Outdoor unit Model Compressor DA130S1C-20FZ DA150S1C-20FZ TNB306FPGMC-L Outdoor fan motor YDK70-6FB YDK70-6FB YDK180-8GB Indoor unit Model 9k Wall 12k Wall 18k Wall Indoor fan motor RPG20B RPG20B RPG28H Model 9k Wall 12k Wall 18k Wall Indoor fan motor RPG20B RPG20B RPG28H...

  • Page 55

    Fan Motor. easure the resi stance value o of each winding g by using the t tester. Position sistance Value YDK70-6FB YDK180-8G YSK27-4 YSK6 68-4B DK45-6B YSK25-6L 56Ω±8% 24.5Ω±8% 317Ω±8 145Ω Ω±8% 5Ω±8% 627Ω±8% Black - Red (20℃) (20℃) (20℃ 0℃) 20℃) (20℃)

This manual also for:

Yn027gmfi16m3d, Yn036gmfi16m4d

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