innovair Vexus VIN310C2V31 User Manual
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innovair Vexus VIN310C2V31 User Manual

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Vexus
INVERTER MINI SPLIT
USER
MANUAL
WARNING
• 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.
• This service is only for service engineer to use.
VIN310C2V31
VIN414C2V31
VIN520C2V31
VIN625C2V31

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Summary of Contents for innovair Vexus VIN310C2V31

  • Page 1 Vexus INVERTER MINI SPLIT USER MANUAL VIN310C2V31 VIN414C2V31 VIN520C2V31 VIN625C2V31 WARNING • 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 •...

  • Page 2: Table Of Contents

    CONTENTS 1. Precaution ..............................1 1.1 Safety Precaution ........................1 1.2 Warning ............................1 2. Model List ..............................4 3. Dimension ..............................5 3.1 Indoor Unit ........................... 5 3.2 Outdoor Unit ..........................8 4. Refrigerant Cycle Diagram ........................122 5 Installation Details ............................ 133 5.1 Wrench torque sheet for installation ..................

  • Page 3: Precaution

    INNOVAIR INVERTER VEXUS SERVICE MANUAL installing the product. Sharp edges could cause injury, be especially 1. Precaution careful of the case edges and the fins on the condenser and evaporator. 1.1 Safety Precaution  For installation, always contact the dealer or an authorized service center.
  • Page 4 INNOVAIR INVERTER VEXUS SERVICE MANUAL from product, turn the breaker off or water is drained away properly. disconnect the power supply cable. A bad connection may cause water leakage.  There is risk of electric shock or fire. Keep level even when installing the ...
  • Page 5 INNOVAIR INVERTER VEXUS SERVICE MANUAL through air inlet or outlet while the product is operated.  Do not drink the water drained from the product.  Use a firm stool or ladder when cleaning or maintaining the product. Be careful and avoid personal injury.

  • Page 6: Model List

    SERVICE MANUAL INNOVAIR DC INVV E RTER QUANTUM 2. Model List Model Names of Indoor/Outdoor Units Capacity Model Electrical Application VIN310C2V31 208~230V / 60Hz Cooling Only VIN414C2V31 208~230V / 60Hz Cooling Only VIN520C2V31 208~230V / 60Hz Cooling Only VIN625C2V31 208~230V / 60Hz Cooling Only w w w .

  • Page 7: Dimension

    INNOVAIR INVERTER VEXUS SERVICE MANUAL 3. Dimension 3.1 Indoor Unit Model VIN310C2V31 28 ½ 7 ½ 11 ½ VIN414C2V31 31 ½ 7 ½ 11 ¾ VIN520C2V31 8 ½ 12 ½ VIN625C2V31 42 ½ 1080 13 ¼...
  • Page 8 SERVICE MANUAL INNOVAIR DC INVV E RTER QUANTUM For VIN310C2V31 For VIN414C2V31 w w w . i n n o v a i r . c o m...
  • Page 9 INNOVAIR INVERTER VEXUS SERVICE MANUAL For VIN520C2V31, TIN520H2V33, For VIN625C2V31...

  • Page 10: Outdoor Unit

    SERVICE MANUAL INNOVAIR DC INVV E RTER QUANTUM 3.2 Outdoor Unit More than 30cm More than 60cm (Service space) More than 30cm More than 60cm More than 200cm w w w . i n n o v a i r . c o m...
  • Page 11 INNOVAIR INVERTER VEXUS SERVICE MANUAL For , VIN310C2V31, VIN414C2V31 779 W3 487 W1 300 D 770 W 70 W2 25 B1 61.5 A2 12 A1...
  • Page 12 SERVICE MANUAL INNOVAIR DC INVV E RTER QUANTUM For VIN520C2V31 815 W3 514 W1 333 D 800 W 70 W2 62 B1 D2 D3 61.6 A2 20 A1 w w w . i n n o v a i r . c o m...
  • Page 13 INNOVAIR INVERTER VEXUS SERVICE MANUAL For VIN625C2V31...

  • Page 14: Refrigerant Cycle Diagram

    SERVICE MANUAL INNOVAIR DC INVV E RTER QUANTUM 4. Refrigerant Cycle Diagram INDOOR OUTDOOR LIQUID SIDE T3 Condenser CAPILLARY TUBE temp. sensor HEAT EXCHANGE (EVAPORATOR) HEAT T1 Room temp. T4 Ambient EXCHANGE sensor temp. sensor (CONDENSER) T2 Evaporator temp. sensor T5 Discharge temp.

  • Page 15: Wrench Torque Sheet For Installation

    INNOVAIR INVERTER VEXUS SERVICE MANUAL 5 Installation Details 5.1 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) Ф15.9 4500(459kgf.cm) 4700(479kgf.cm) Ф19 6500(663kgf.cm) 6700(683kgf.cm) 5.2 Connecting the cables The power cord of connect should be selected according to the following specifications sheet.

  • Page 16: Pipe Length And The Elevation

    SERVICE MANUAL INNOVAIR DC INVV E RTER QUANTUM 5.3 Pipe length and the elevation The pipe length and refrigerant amount: Pipe size Standard Max. Max. Additional Model length Elevation Length refrigerant B (m) A (m) (g/m) Liquid 3/8’’ 1/4’’ VIN310C2V31 INDOOR + VIN310C2V31 OUTDOOR (Ф9.52)

  • Page 17: Installation For The First Time

    INNOVAIR INVERTER VEXUS SERVICE MANUAL connection to the vacuum pump. 5.4 Installation for the first time 4) Fully open the handle Lo of the manifold valve. Air and moisture in the refrigerant system have 5) Operate the vacuum pump to evacuate.

  • Page 18: Adding The Refrigerant After Running The System For Many Years

    SERVICE MANUAL Open the valves on the charging cylinder and the INNOVAIR DC INVV E RTER QUANTUM 2). Purge the air from the charge hose. charge set. Purge the air by loosening the flare Open the valve at the bottom of the cylinder nut on the 2-way valve approximately 45’...

  • Page 19: Re-Installation While The Outdoor Unit Need To Be Repaired

    INNOVAIR INVERTER VEXUS SERVICE MANUAL 2). Connect the charge hose with the push pin of Check the flare connections for gas leakage. handle lo to the 3-way valves gas service port. 5). Discharge the refrigerant. 3). Air purging of the charge hose.
  • Page 20 SERVICE MANUAL INNOVAIR DC INVV E RTER QUANTUM 2. Refrigerant charging port. Use torque wrench to tighten the service port cap to a torque of 18N.m. Be sure to check for gas leakage. Procedure: 1). Connect the charge hose to the charging...

  • Page 21: Wiring Diagrams

    INNOVAIR INVERTER VEXUS SERVICE MANUAL 6. Wiring Diagrams 6.1 Indoor Unit , , VIN310C2V31, VIN414C2V31 ’ VIN520C2V31...
  • Page 22 SERVICE MANUAL INNOVAIR DC INVV E RTER QUANTUM VIN625C2V31 w w w . i n n o v a i r . c o m...

  • Page 23: Outdoor Unit

    INNOVAIR INVERTER VEXUS SERVICE MANUAL 6.2 Outdoor Unit VIN310C2V31, VIN414C2V31,...
  • Page 24 INNOVAIR INVERTER VEXUS SERVICE MANUAL VIN520C2V31, VIN625C2V31 w w w . i n n o v a i r . c o m...

  • Page 25: Operation Characteristics

    INNOVAIR INVERTER VEXUS SERVICE MANUAL 7. Operation Characteristics Mode Cooling operation Heating operation Drying operation Temperature 17℃~32℃ 0℃~30℃ 10℃~32℃ Room temperature (62℉~90℉) (32℉~86℉) (50℉~90℉) Outdoor temperature 0℃~50℃ -15℃~30℃ 0℃~50℃ (32℉~122℉) (5℉~86℉) (32℉~122℉) -15℃~50℃ (5℉~122℉) (For the models with low temperature cooling system) CAUTION: 1.

  • Page 26: Electronic Function

    INNOVAIR INVERTER VEXUS SERVICE MANUAL Dispalys ‘ ’ during self clean operation (if 8. Electronic function aplicable). 8.1 Abbreviation Dispalys ‘ ’ under 8℃ heating operation (if T1: Indoor room temperature aplicable). T2: Coil temperature of evaporator When ECO function(optional) is actived,the T3: Coil temperature of condenser “...

  • Page 27: Main Protection

    INNOVAIR INVERTER VEXUS SERVICE MANUAL When there’s more than one temperature 8.3 Main Protection sensor in malfunction, the air conditioner will stop working. 8.3.1 Three minutes delay at restart for compressor 8.3.9 Refrigerant leakage detection 1 minute delay for the 1 time start-up and 3 This function is only active in cooling mode.

  • Page 28: Operation Modes And Functions

    INNOVAIR INVERTER VEXUS SERVICE MANUAL 8.4 Operation Modes and Functions &Hz 8.4.1 Fan mode ( 1) Outdoor fan and compressor stop. (2) Temperature setting function is disabled, and no setting temperature is displayed. (3) Indoor fan can be set to high/med/low/auto.
  • Page 29 INNOVAIR INVERTER VEXUS SERVICE MANUAL 8.4.3.1 Compressor running rules T1-TS When T1-Ts>-ΔT, the compressor will stop, <ΔT-1.5， the compressor will be on. when T1-T ΔT is the programmed parameter of temperature compensation. When the AC run in mute mode, the compressor will run with low frequency.
  • Page 30 INNOVAIR INVERTER VEXUS SERVICE MANUAL wind function has the priority. protection The indoor fan is controlled as below: Td=Ts+Δt Setting fan T1-Td ℃(°F) Actual fan speed speed TEstop H+(H+=H+G) H（=H） Decrease TEdown H-（H-=H-G) Hold M+(M+=M+Z) TEH2 M(M=M) Resume M-(M-=M-Z) L+(L+=L+D) L(L=L) Off: Compressor stops.
  • Page 31 INNOVAIR INVERTER VEXUS SERVICE MANUAL When cooling, the setting temperature rises 1℃ 8.4.6 Forced operation function (be lower than 30℃) every one hour, 2 hours Forced cooling mode: later the setting temperature stops rising and The compressor and outdoor fan keep running the indoor fan is fixed at low speed.
  • Page 32 INNOVAIR INVERTER VEXUS SERVICE MANUAL The PCB will take action to the mode of the louver. During operation, if the power fails change information from remote controller or the end user shuts down the unit in the turbo mode, the louver will restore to the default signal, but it will not affected by the setting angle.
  • Page 33 INNOVAIR INVERTER VEXUS SERVICE MANUAL 8.4.16 Point check function Press the LED DISPLAY or LED or MUTE button of the remote controller three times, and then press the AIR DIRECTION or SWING button three times in ten seconds, the buzzer will keep ring for two seconds.
  • Page 34 INNOVAIR INVERTER VEXUS SERVICE MANUAL When the AC enter into the information enquiry status, it will display the code value in the next 25s , the details are as follows. Enquiry Display value Meaning Remark information T1,T2,T3,T4, -1F,-1E,-1d,-1c,- -25,-24,-23,-22,-21,-2 1. All the displaying temperature is actual...

  • Page 35: Troubleshooting

    INNOVAIR INVERTER VEXUS SERVICE MANUAL 9. Troubleshooting Safety Electricity power is still kept in capacitors even the power supply is shut off. Do not forget to discharge the electricity power in capacitor. Electrolytic Capacitors (HIGH VOLTAGE! CAUTION!) For other models, please connect discharge resistance (approx.100Ω 40W) or soldering iron (plug) between +, - terminals of the electrolytic capacitor on the contrary side of the outdoor PCB.

  • Page 36: Indoor Unit Error Display

    INNOVAIR INVERTER VEXUS SERVICE MANUAL 9.1 Indoor Unit Error Display Operation Timer lamp Display LED STATUS lamp ☆ 1 time Indoor unit EEPROM parameter error ☆ 2 times Indoor / outdoor units communication error ☆ 3 times Zero-crossing signal detection error ☆...

  • Page 37: Diagnosis And Solution

    INNOVAIR INVERTER VEXUS SERVICE MANUAL 9.2 Diagnosis and Solution 9.2.1 EEPROM parameter error diagnosis and solution(E0/F4) E0/F4 Error Code Malfunction decision Indoor or outdoor PCB main chip does not receive feedback conditions from EEPROM chip. Supposed causes Installation mistake ●...
  • Page 38 INNOVAIR INVERTER VEXUS SERVICE MANUAL 9.2.2 Indoor / outdoor unit’s communication diagnosis and solution(E1) Error Code Malfunction decision Indoor unit does not receive the feedback from outdoor unit during conditions 110 seconds and this condition happens four times continuously. Supposed causes Wiring mistake ●...
  • Page 39 INNOVAIR INVERTER VEXUS SERVICE MANUAL Remark: Use a multimeter to test the DC voltage between 2 port and 3 port of outdoor unit. The red pin of multimeter connects with 2 port while the black pin is for 3 port.
  • Page 40 INNOVAIR INVERTER VEXUS SERVICE MANUAL 9.2.3 Zero crossing detection error diagnosis and solution (E2) Error Code Malfunction decision When PCB does not receive zero crossing signal feedback for 4 conditions minutes or the zero crossing signal time interval is abnormal.
  • Page 41 INNOVAIR INVERTER VEXUS SERVICE MANUAL 9.2.4 Fan speed has been out of control diagnosis and solution(E3) E3/F5 Error Code Malfunction decision When indoor fan speed keeps too low (300RPM) for certain time, conditions the unit will stop and the LED will display the failure.
  • Page 42 INNOVAIR INVERTER VEXUS SERVICE MANUAL Index 1: 1:Indoor or Outdoor DC Fan Motor(control chip is in 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 has problems and need to be replaced.
  • Page 43 INNOVAIR INVERTER VEXUS SERVICE MANUAL 9.2.5 Open circuit or short circuit of temperature sensor diagnosis and solution E4/E5/F1/F2/F3 Error Code Malfunction decision If the sampling voltage is lower than 0.06V or higher than 4.94V, conditions the LED will display the failure.
  • Page 44 INNOVAIR INVERTER VEXUS SERVICE MANUAL 9.2.6 Refrigerant Leakage Detection diagnosis and solution(EC) Error Code Malfunction decision Define the evaporator coil temperatureT2 of the compressor just conditions starts running as Tcool. In the beginning 5 minutes after the compressor starts up, if T2 ＜Tcool－2 °C( Tcool－35.6 °F) does not keep continuous 4...
  • Page 45 INNOVAIR INVERTER VEXUS SERVICE MANUAL 9.2.6 Overload current protection diagnosis and solution(F0) Error Code Malfunction decision An abnormal current rise is detected by checking the specified conditions current detection circuit. Supposed causes Power supply problems. ● System blockage ● PCB faulty ●...
  • Page 46 INNOVAIR INVERTER VEXUS SERVICE MANUAL 9.2.7 IPM malfunction or IGBT over-strong current protection diagnosis and solution(P0) Error Code Malfunction decision When the voltage signal that IPM send to compressor drive chip conditions is abnormal, the display LED will show “P0” and AC will turn off.
  • Page 47 INNOVAIR INVERTER VEXUS SERVICE MANUAL For example: Note: The photos below are only for reference, it’s may be not same totally with the ones on your side.
  • Page 48 INNOVAIR INVERTER VEXUS SERVICE MANUAL w w w . i n n o v a i r . c o m...
  • Page 49 INNOVAIR INVERTER VEXUS SERVICE MANUAL...
  • Page 50 INNOVAIR INVERTER VEXUS SERVICE MANUAL For 30K~36K: At first test the resistance between every two ports of U, V, W of IPM and P, N. If any result of them is 0 or close to 0, the IPM is defective. Otherwise, please follow the procedure below:...
  • Page 51 INNOVAIR INVERTER VEXUS SERVICE MANUAL 9.2.8 Over voltage or too low voltage protection diagnosis and solution(P1) 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.
  • Page 52 INNOVAIR INVERTER VEXUS SERVICE MANUAL 9.2.9 High temperature protection of IPM module diagnosis and solution(P2) Error Code Malfunction decision If the temperature of IPM module is higher than limited value, the conditions LED will display the failure. Supposed causes IPM radiator problem ●...
  • Page 53 INNOVAIR INVERTER VEXUS SERVICE MANUAL 9.2.10 Inverter compressor drive error diagnosis and solution(P4) Error Code Malfunction decision An abnormal inverter compressor drive is detected by a special conditions detection circuit, including communication signal detection, voltage detection, compressor rotation speed signal detection and so on.
  • Page 54 INNOVAIR INVERTER VEXUS SERVICE MANUAL 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. Digital tester...
  • Page 55 INNOVAIR INVERTER VEXUS SERVICE MANUAL For 30K~36K: At first test the resistance between every two ports of U, V, W of IPM and P, N. If any result of them is 0 or close to 0, the IPM is defective. Otherwise, please follow the procedure below:...
  • Page 56 INNOVAIR INVERTER VEXUS SERVICE MANUAL 9.2.11 Low pressure protection diagnosis and solution(P6) Error Code Malfunction decision When the pressure of system reach a certain value, the low conditions pressure protector will switch off. After the pressure resume to normal ,the protection code will disappear.
  • Page 57 INNOVAIR INVERTER VEXUS SERVICE MANUAL Main parts check 1. Temperature sensor checking Disconnect the temperature sensor from PCB, measure the resistance value with a tester. Temperature Sensors. Room temperature(T1) sensor, Indoor coil temperature(T2) sensor, Outdoor coil temperature(T3) sensor, Outdoor ambient temperature(T4) sensor, Compressor discharge temperature(TP) sensor.
  • Page 58 INNOVAIR INVERTER VEXUS SERVICE MANUAL Appendix 1 Temperature Sensor Resistance Value Table for T1,T2,T3,T4 (°C--K) °C °F °C °F °C °F °C °F 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 11.5...
  • Page 59 INNOVAIR INVERTER VEXUS SERVICE MANUAL A ppendix 2 Temperature Sensor Resistance Value Table for TP (°C --K) °C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm 542.7 68.66 13.59 3.702 511.9 65.62 13.11 3.595...
  • Page 60 INNOVAIR INVERTER VEXUS SERVICE MANUAL Appendix 3: °C °F °C °F °C °F °C °F °C °F 68.8 123.8 178.6 235.4 24.8 71.6 125.6 181.4 237.2 26.6 73.4 127.4 183.2 28.4 75.2 128.2 240.8 30.2 186.8 242.6 25.5 77.9 132.8 188.6...
  • Page 61 INNOVAIR INVERTER VEXUS SERVICE MANUAL Appendix 4 Normal voltage of P and N 208-240V(1-phase,3-phase) 380-420V(3-phase) In standby around 310VDC around 530VDC In operation With passive PFC With partial active With fully active module PFC module PFC module >200VDC >310VDC >370VDC...
  • Page 62 INNOVAIR INVERTER VEXUS SERVICE MANUAL 2.Compressor checking Measure the resistance value of each winding by using the tester. Position Resistance Value ASN98D22UFZ ASM135D23UFZ ATF235D22UMT ATF250D22UMT Blue - Red 1.75 Ω 0.75 Ω 0.75 Ω 1.57Ω Blue - Black Red - Blue...

This manual is also suitable for:

Vexus vin414c2v31Vexus vin520c2v31Vexus vin625c2v31

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