innovair VOM20H2RE102 Service Manual
  1. Manuals
  2. Brands
  3. innovair Manuals
  4. Air Conditioner
  5. VOM20H2RE102
  6. Service manual

innovair VOM20H2RE102 Service Manual

Dc inverter multi type
Hide thumbs Also See for VOM20H2RE102:
Table of Contents

Advertisement

Quick Links

SERVICE MANUAL

DC INVERTER MULTI TYPE
VOM20H2RE102
VOM30H2RE103
VOM42H2RE104
DC MULTI OUTDOOR UNITS
1

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the VOM20H2RE102 and is the answer not in the manual?

Questions and answers

Related Manuals for innovair VOM20H2RE102

Summary of Contents for innovair VOM20H2RE102

  • Page 1: Service Manual

    SERVICE MANUAL DC INVERTER MULTI TYPE VOM20H2RE102 VOM30H2RE103 VOM42H2RE104 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 ..............7 6. Indoor units combination ..............9 7. Installation Details ................10 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 VOM20H2RE102 845x320x700(33.3x12.6x27.6) DA130S1C-20FZ VOM30H2RE103 845x320x700(33.3x12.6x27.6) DA150S1C-20FZ VOM42H2RE104 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 Dimensio n mm(in) Model VOM20H2RE102 845((33.3) 320(12.6) 700(27.6) 908(35.7) 560(22) 335(13.2) VOM30H2RE103 VOM42H2RE104 990(39) 345(13.6) 965(38) 1075(42.3) 624(24.6) 366(14.4)

  • Page 6: Wiring Diagram

    4. Wiring Diagram 4.1 VOM20H2RE102 4.2 VOM30H2RE103...
  • Page 7 4.3 VOM42H2RE104...

  • Page 8: 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 9 5.3 Refrigeration circuit drawing of inverter qua-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 10: Indoor Units Combination

    6. Indoor units combination 6.1 Indoor unit combination for VOM20H2RE102 Limit Comb. Suggested Combination Dual(1x1) None Dual (1x2) 9+12 — 6.2 Indoor unit combination for VOM30H2RE103 Limit Comb. Suggested Combination TRI (1x1) The 18k indoor unit should 9+12 not be Floor Ceiling or Duct TRI (1x2) unit;...

  • Page 11: 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 12: Installation For The First Time

    Indoor unit Extension pipe diameter (mm/inch) Model Pipe diameter (mm/inch) Liquid 6.35(1/4) Liquid 6.35(1/4) 9.52(3/8) 9.52(3/8) Liquid 6.35(1/4) Liquid 6.35(1/4) 12K 18K 12.7(1/2) 12.7(1/2) Outdoor unit union diameter (mm/inch) Liquid 6.35(1/4) Indoor unit A/B/C/D 9.52(3/8) 7.4 Installation for the first time Air and moisture in the refrigerant system have undesirable effects as below: ●...
  • Page 13 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. 2) Connect the charge hose with the push pin of handle lo to the 3-way valves gas service port.. 3) Connect the charge hose of handle hi connection to the vacuum pump.
  • Page 14 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’...
  • Page 15 Open the valve at the 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.
  • Page 16 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 valve’s service port immediately and turn off the air conditioner before disconnecting the hose.
  • Page 17 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 gauge ends up indicating 0.3 to 0.5Mpa.
  • Page 18 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).
  • Page 19 needle does not move (approximately 5 minutes after turning off the vacuum pump). 5). Disconnect the charge hose from the vacuum pump.
  • 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 show: “――”) AD value of current AD data(decimal numeral) EXV open angle for A indoor unit Actual data times 8 EXV open angle for B indoor unit Actual data times 8 EXV open angle for C indoor unit Actual data times 8 EXV open angle for D indoor unit Actual data times 8 AD value of voltage...
  • Page 23 8.5.4 Compressor current limit protection If the compressor current exceeds the current limit value for 10 seconds, the compressor frequency will be limited as below table. 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.
  • Page 24 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 25: Troubleshooting

    9. Troubleshooting 9.1 Indoor unit error code explanation: FOR VWM1013H21, VWM1320H21: ODU Error code Display Failure Indoor EEPROM malfunction —— Indoor/ outdoor units communication error —— Zero-crossing signal error —— Indoor fan speed has been out of control —— Open circuit or short circuit of outdoor temperature sensor or outdoor EEPROM malfunction E0,E4 Open circuit or short circuit of T1 or T2 temperature sensor ——...
  • Page 26 Voltage protection Communication malfunction between IPM board and outdoor main board —— —— Temperature protection of compressor discharge (Temperature protection of P3(P1) compressor top(only for VOM20H2RE102&VOM30H2RE103) ) High pressure protection (Only for VOM42H2RE104) —— —— Low pressure protection(Only forVOM42H2RE104) ——...
  • Page 27 9.2 Trouble shooting 9.2.1 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 28 9.3.1.2 Indoor / outdoor unit communication error 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 Reconnect the wiring diagram.
  • Page 29 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/qua-zone) PFC (qua-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 30 9.3.1.3 Zero-crossing signal error Check if the connections and Correct the connections. Turn on the power supply is normal? unit when the power supply is good. Indoor PCB is defective. Replace indoor PCB. 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.
  • Page 31 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 32 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/ A5 duct) If the water-level switch...
  • Page 33 9.3.1.8 Outdoor temp. too low protection(Optional for some models) Check if the outdoor ambient Turn on the unit when outdoor temperature is beyond the normal ambient temperature is in normal operation temperature range. operation temperature range. Replace the outdoor ambient temperature sensor.
  • Page 34 9.3.2.3 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. ● Power supply problems. Supposed causes ● System leakage or block ● PCB faulty Trouble shooting: Voltage protection Check the voltage of...
  • Page 35 9.3.2.4 E7(Communication malfunction between IPM board and outdoor main board) error diagnosis and solution. Error Code Malfunction decision PCB main chip does not receive feedback from IPM module during conditions 60 seconds. ● Wiring mistake Supposed causes ● PCB faulty Trouble shooting: Communication malfunction between IPM board and outdoor main board...
  • Page 36 9.3.2.5 P0(Temperature protection of compressor top) error diagnosis and solution.(only for VOM20H2RE102&VOM30H2RE103) Error Code Malfunction decision If the sampling voltage is not 5V, the LED will display the conditions failure. ● Wiring mistake Supposed causes ● Over load protector faulty ●...
  • Page 37 9.3.2.6 P0(Temperature protection of compressor discharge) error diagnosis and solution. Error Code Malfunction decision When the compressor discharge temperature(T5) is more than conditions 115℃ for 10 seconds, the compressor will stop and restart till T5 is less than 90℃. ● Refrigerant leakage Supposed causes ●...
  • Page 38 9.3.2.7 P1(High pressure protection) error diagnosis and solution. (Only for VOM42H2RE104) Error Code Malfunction decision If the sampling voltage is not 5V, the LED will display the conditions failure. ● Wiring mistake Supposed causes ● Over load protector faulty ● System block ●...
  • Page 39 9.3.2.8 P2(Low pressure protection) error diagnosis and solution. (Only for VOM42H2RE104) Error Code Malfunction decision If the sampling voltage is not 5V, the LED will display the conditions failure. ● Wiring mistake Supposed causes ● Over load protector faulty ● System block ●...
  • Page 40 9.3.2.9 P3(Current protection of compressor) error diagnosis and solution. Error Code Malfunction decision If the compressor current exceeds the current limit value for 10 conditions seconds, the LED will display the failure. ● Wiring mistake Supposed causes ● Over load protector faulty ●...
  • Page 41 9.3.2.10 P4(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. ● Wiring mistake Supposed causes ●...
  • Page 42 9.3.2.11 P6(High temperature protection of condenser) error diagnosis and solution. Error Code When outdoor pipe temperature is more than 65°C, the unit will stop, Malfunction decision and unit runs again when outdoor pipe temperature is less than 52°C conditions ● The condenser temperature sensor faulty Supposed causes ●...
  • Page 43 9.3.2.13 PF(PFC module protection) error diagnosis and solution. (Only for VOM42H2RE104) Error Code Malfunction decision When the voltage signal that PFC sends to main control board is conditions abnormal, the display LED will show “PF” and AC will turn off. ●...
  • Page 44 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 45 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 46 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 47 ~1.7M ohm Infinite ~1.7M ohm Infinite 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 48 Appendix 5: Spec. Outdoor unit Model DA130S1C-20 DA150S1C-20 DA150S1C-20 TNB306FPGM TNB306FPGM Compressor Outdoor fan YDK70-6FB YDK70-6FB YDK53-6FB(B) YDK180-8GB WZDK180-38G motor Indoor unit Model 9k Vertu 12k Vertu 18k Vertu Indoor fan motor RPG20B RPG20B RPG28H Model 9k 9A 12k 9A 18k 9A Indoor fan motor RPG20B...
  • Page 49 Fan Motor. Measure the resistance value of each winding by using the tester. Position Resistance Value YDK70-6FB YDK180-8GB YSK27-4G YSK68-4B YDK45-6B YSK25-6L YDK53-6FB(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%...

This manual is also suitable for:

Vom42h2re104Vom30h2re103

Table of Contents