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INNOVAIR INVERTER VEXUS

SERVICE MANUAL

9.2.5 Open circuit or short circuit of temperature sensor diagnosis and solution 

Error Code 

E4/E5/F1/F2/F3 

Malfunction decision 

conditions 

If the sampling voltage is lower than 0.06V or higher than 4.94V, 

the LED will display the failure. 

Supposed causes 

●

Wiring mistake

●

Sensor faulty

Trouble shooting: 

Check the connections 
between temperature 
sensor and main PCB. 
Are the connections 
good?

Correct the connections.

No

Yes

Yes

Replace indoor or 

outdoor main PCB.

      Replace the sensor

Check the resistance value 
of the sensor, is it normal?

No

41

Содержание Vexus VIN310C2V31

Страница 1: ...ician 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 ...

Страница 2: ...he first time 15 5 5 Adding the refrigerant after running the system for many years 16 5 6 Re installation while the indoor unit need to be repaired 17 5 7 Re installation while the outdoor unit need to be repaired 17 6 Wiring Diagrams 19 6 1 Indoor Unit 19 6 2 Outdoor Unit 21 7 Operation Characteristics 23 8 Electronic function 24 8 1 Abbreviation 24 8 2 Display function 24 8 3 Main Protection 25...

Страница 3: ...product Sharp edges could cause injury be especially careful of the case edges and the fins on the condenser and evaporator For installation always contact the dealer or an authorized service center Do not install the product on a defective installation stand Be sure the installation area does not deteriorate with age If the base collapses the air conditioner could fall with it causing property da...

Страница 4: ...ir of product Low refrigerant levels may cause failure of product Install the drain hose to ensure that water is drained away properly A bad connection may cause water leakage Keep level even when installing the product It can avoid vibration of water leakage Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods It may cause a problem for your n...

Страница 5: ...l injury Replace the all batteries in the remote control with new ones of the same type Do not mix old and new batteries or different types of batteries There is risk of fire or explosion Do not recharge or disassemble the batteries Do not dispose of batteries in a fire They may burn of explode If the liquid from the batteries gets onto your skin or clothes wash it well with clean water Do not use...

Страница 6: ...r c o m 2 Model List Model Names of Indoor Outdoor Units Capacity Model Electrical Application 9K VIN310C2V31 208 230V 60Hz Cooling Only 12K VIN414C2V31 208 230V 60Hz Cooling Only 17K VIN520C2V31 208 230V 60Hz Cooling Only 22K VIN625C2V31 208 230V 60Hz Cooling Only 4 ...

Страница 7: ...RTER VEXUS SERVICE MANUAL 3 Dimension 3 1 Indoor Unit Model W D H in mm in mm in mm VIN310C2V31 28 722 7 187 11 290 VIN414C2V31 31 802 7 189 11 297 VIN520C2V31 38 965 8 215 12 319 VIN625C2V31 42 1080 9 226 13 335 5 ...

Страница 8: ...INNOVAIR DC INVV ERTER QUANTUM SERVICE MANUAL w w w i n n o v a i r c o m For VIN310C2V31 For VIN414C2V31 6 ...

Страница 9: ...INNOVAIR INVERTER VEXUS SERVICE MANUAL For VIN520C2V31 TIN520H2V33 For VIN625C2V31 7 ...

Страница 10: ...INNOVAIR DC INVV ERTER QUANTUM SERVICE MANUAL w w w i n n o v a i r c o m 3 2 Outdoor Unit More than 30cm More than 60cm More than 200cm More than 30cm More than 60cm Service space Fence or obstacles 8 ...

Страница 11: ...INNOVAIR INVERTER VEXUS SERVICE MANUAL For VIN310C2V31 VIN414C2V31 487 W1 70 W2 298 555 300 D H 12 60 93 H1 H2 D1 770 W 779 W3 322 D2 25 B1 90 B2 61 5 A2 12 A1 R 6 286 D3 9 ...

Страница 12: ...NNOVAIR DC INVV ERTER QUANTUM SERVICE MANUAL w w w i n n o v a i r c o m For VIN520C2V31 800 W 514 W1 554 60 85 5 340 12 0 311 815 W3 365 333 D 70 W2 H H1 H2 D1 D2 D3 62 B1 106 B2 20 A1 R20 R6 61 6 A2 10 ...

Страница 13: ...INNOVAIR INVERTER VEXUS SERVICE MANUAL For VIN625C2V31 11 ...

Страница 14: ...m 4 Refrigerant Cycle Diagram INDOOR OUTDOOR LIQUID SIDE GAS SIDE HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER COMPRESSOR CAPILLARY TUBE T2 Evaporator temp sensor T1 Room temp sensor ACCUMULATOR T4 Ambient temp sensor T5 Discharge temp sensor T3 Condenser temp sensor 12 ...

Страница 15: ...4700 479kgf cm Ф19 3 4 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 Rated current of appliance Nominal cross sectional area mm 3 and 6 0 75 6 and 10 1 10 and 16 1 5 16 and 25 2 5 The cable size and the current of the fuse or switch are determined by the maximum current indicated on the nameplate...

Страница 16: ...nt g m Gas Liquid VIN310C2V31 INDOOR VIN310C2V31 OUTDOOR 3 8 Ф9 52 1 4 Ф6 35 7 5 10 25 15 VIN414C2V31 INDOOR VIN414C2V31 OUTDOOR 1 2 Ф12 7 1 4 Ф6 35 7 5 10 25 15 VIN520C2V31 INDOOR VIN520C2V31 OUTDOOR 1 2 Ф12 7 1 4 Ф6 35 7 5 20 30 15 VIN625C2V31 INDOOR VIN625C2V31 OUTDOOR 5 8 Ф15 9 3 8 Ф9 52 7 5 20 30 30 Caution The capacity test is based on the standard length and the maximum permissive length is...

Страница 17: ... Connect the charge hose of handle hi connection to the vacuum pump 4 Fully open the handle Lo of the manifold valve 5 Operate the vacuum pump to evacuate 6 Make evacuation for 30 minutes and check whether the compound meter indicates 0 1Mpa If 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 minut...

Страница 18: ...e 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 2 Purge the air from the charge hose 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 sca...

Страница 19: ...ay valve approximately 45 for 3 seconds then closing it for 1 minute repeat 3 times 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 ...

Страница 20: ...cord the weight 4 Open the valves Low side on the charge set and charge the system with liquid refrigerant If the system cannot be charge with the specified amount of refrigerant or can be charged with a little at a time approximately 150g each time operating the air conditioner in the cooling cycle however one time is not sufficient wait approximately 1 minute and then repeat the procedure 5 When...

Страница 21: ...INNOVAIR INVERTER VEXUS SERVICE MANUAL 6 Wiring Diagrams 6 1 Indoor Unit VIN310C2V31 VIN414C2V31 VIN520C2V31 19 ...

Страница 22: ...INNOVAIR DC INVV ERTER QUANTUM SERVICE MANUAL w w w i n n o v a i r c o m VIN625C2V31 20 ...

Страница 23: ...INNOVAIR INVERTER VEXUS SERVICE MANUAL 6 2 Outdoor Unit VIN310C2V31 VIN414C2V31 21 ...

Страница 24: ...INNOVAIR INVERTER VEXUS SERVICE MANUAL w w w i n n o v a i r c o m VIN520C2V31 VIN625C2V31 22 ...

Страница 25: ... 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 2 The room relative humidity should be less than 80 If the air conditioner operates beyond this figure the surface of the air conditioner may attract condensation Please set the vertical air flow louver to its maximum angle vertically to ...

Страница 26: ...s the room temperature in FAN mode Displays the self diagnostic codes Dispalys for three seconds when Timer ON Fresh Swing Turbo or Silence feature is activated Dispalys for three seconds when Fresh Swing Turbo or Silence feature is cancelled Dispalys under deforsting operation Dispalys when anti cold air feature is activated under heating mode Dispalys during self clean operation if aplicable Dis...

Страница 27: ...ive immediately and t he indoor fan will open 7s later If the unit runs in heating mode the indoor fan will be al so controlled by anti cold wind function 8 3 7 Compressor preheating functions Preheating permitting condition When T4 outdoor ambient temperature 3 C the preheating function will be ac tivated 8 3 8 Sensor protection at open circuit and breaking disconnection When there s only one t e...

Страница 28: ...requency When the current is more than setting value the current protection function will be activated and the compressor will stop 8 4 2 2 Outdoor fan running rules The outdoor unit will be run at different fan speed according to T4 and compressor frequency For different outdoor units the fan speeds are different For VIN310C2V31 VIN414C2V31 VIN520C2V31 VIN625C2V31 TIN1036H2V02 TIN1839H2V02 T4 fre...

Страница 29: ...ressor will stop when T1 TS ΔT 1 5 the compressor will be on ΔT is the programmed parameter of temperature compensation When the AC run in mute mode the compressor will run with low frequency When the current is more than setting value the current protection function will be activated and the compressor will stop 8 4 3 2 Outdoor fan running rules The outdoor unit will be run at different fan speed...

Страница 30: ...un for 10 minutes in defrosting mode 8 4 3 5 Evaporator coil temperature protection TEstop T2 Resume Off Decrease TEdown TEH2 Hold Off Compressor stops Decrease Decrease the running frequency to the lower level Hold Keep the current frequency Resume No limitation for frequency 8 4 4 Auto mode This mode can be chosen with remote controller and the setting temperature can be changed between 17 C 30 ...

Страница 31: ... auto mode 8 4 8 2 Operation process in sleep mode is as follow When cooling the setting temperature rises 1 be lower than 30 every one hour 2 hours later the setting temperature stops rising and the indoor fan is fixed at low speed When heating the setting temperature decreases 1 be higher than 17 every one hour 2 hours later the setting temperature stops rising and indoor fan is fixed at low spe...

Страница 32: ... every 3 minutes the buzzer will not respond When the unit is running with follow me function the PCB will control the unit according to the temperature from follow me signal and t he temperature collection function of room temperature sensor will be shielded but the error detective function of room temperature sensor will be s till valid 2 When the follow me function is available the PCB will con...

Страница 33: ...e as follows Enquiry information Displaying code Meaning T1 T1 Indoor room temperature T2 T2 Indoor coil mid temperature T3 T3 Outdoor coil temperature T4 T4 Outdoor temperature T2B Tb Indoor coil outlet temperature TP TP Compressor discharge temperature TH TH IPM modular temperature Targeted Frequency FT Targeted Frequency Actual Frequency Fr Actual Frequency Indoor fan speed IF Indoor fan speed ...

Страница 34: ...alue 19 99 19 99 A0 A1 A9 100 101 109 b0 b1 b9 110 111 119 c0 c1 c9 120 121 129 d0 d1 d9 130 131 139 E0 E1 E9 140 141 149 F0 F1 F9 150 151 159 Indoor fan speed Outdoor fan speed 0 OFF 1 2 3 4 Low speed Medium speed High speed Turbo For some big capacity motors 14 FF Actual fan speed Display value turns to decimal value and then multiply 10 The unit is RPM For some small capacity motors display val...

Страница 35: ...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 Note The picture above is only for reference The plug of your side may be different 33 ...

Страница 36: ... unit EEPROM parameter error 6 times O F5 Outdoor fan speed has been out of control 1 times P0 IPM malfunction or IGBT over strong current protection 2 times P1 Over voltage or over low voltage protection 3 times P2 High temperature protection of IPM module 4 times P3 Outdoor ambient temperature too low 5 times P4 Inverter compressor drive error 7 times P6 Low pressure protection Only for 36K mode...

Страница 37: ...ip Supposed causes Installation mistake PCB faulty Trouble shooting Yes Replace the indoor outdoor main PCB Power off then restart the unit 2 minutes later EEPROM a read only memory whose contents can be erased and reprogrammed using a pulsed voltage For the location of EEPROM chip please refer to the below photos Indoor PCB Outdoor PCB Note The two photos above are only for reference it s may be ...

Страница 38: ... N of outdoor unit Red pan S Black pan N If the voltage has always been the positive value Power off then restart the unit 2 minutes later Power off then restart the unit 2 minutes later If the voltage is a fixed value Replace the outdoor main PCB Power on Is the error extinguished Replace the outdoor main PCB Power on Is the error extinguished Check the outdoor wiring connection Check the outdoor...

Страница 39: ...ormal running the voltage will move alternately between 25V to 25V If the outdoor unit has malfunction the voltage will move alternately with positive value While if the indoor unit has malfunction the voltage will be a certain value Remark Use a multimeter to test the resistance of the reactor which does not connect with capacitor The normal value should be around zero ohm Otherwise the reactor m...

Страница 40: ...s When PCB does not receive zero crossing signal feedback for 4 minutes or the zero crossing signal time interval is abnormal Supposed causes Connection mistake PCB faulty Trouble shooting Check if the connections and power supply is normal Correct the connections Turn on the unit when the power supply is good No Yes Indoor main PCB is defective Replace indoor main PCB 38 ...

Страница 41: ...le shooting Shut off the power supply and turn it on 2 minutes later Is it still displaying the error code Shut off the power supply rotate the fan by hand Does it rotate properly The unit operates normally Find out the cause and have it solved For example check whether the fan is blocked or the bearing is broken Check the wires of fan motor Are all the connections good No Yes No Correct the conne...

Страница 42: ...e 1 Red Vs Vm 140V 190V 2 3 Black GND 0V 4 White Vcc 14 17 5V 5 Yellow Vsp 0 5 6V 6 Blue FG 14 17 5V 2 Outdoor DC Fan Motor control chip is in outdoor PCB Power on and check if the fan can run normally if the fan can run normally the PCB must has problems and need to be replaced If the fan can t run normally measure the resistance of each two pins If the resistance is not equal to each other the f...

Страница 43: ...ampling voltage is lower than 0 06V or higher than 4 94V the LED will display the failure Supposed causes Wiring mistake Sensor faulty Trouble shooting Check the connections between temperature sensor and main PCB Are the connections good Correct the connections No Yes Yes Replace indoor or outdoor main PCB Replace the sensor Check the resistance value of the sensor is it normal No 41 ...

Страница 44: ...n off Supposed causes T2 sensor faulty Indoor PCB faulty System problems such as leakage or blocking Trouble shooting Is there cool air blowing out from indoor air outlet Yes Yes Check if T2 sensor is well fixed Correct the installation or replace T2 sensor Does the problem remain again No Is there any leakage Especially the connection parts such as the gas valve and the liquid valve No Shut off t...

Страница 45: ...lty Wiring mistake Compressor malfunction Trouble shooting Check the power supply Is it normal Check the connections and wires Is it well connection Stop the unit Check the power supply No Yes No Correct the connections or replace the wires Yes Replace the outdoor main PCB Yes Check the reactor Is it normal No Replace the reactor Is there any blocking No Yes Clear the blockage Check the compressor...

Страница 46: ...K 24K Check if the wiring between main PCB and compressor If the wires and connectors are broken Correct the connection or replace the wires and connectors Yes No IPM continuity check Check if the IPM terminal resistance values are uniform Replace the IPM board or replace the main PCB if the IPM board and main PCB are integrated together No Check if the outdoor fan runs properly or the outdoor uni...

Страница 47: ...INNOVAIR INVERTER VEXUS SERVICE MANUAL For example P U P V Note The photos below are only for reference it s may be not same totally with the ones on your side 45 ...

Страница 48: ...INNOVAIR INVERTER VEXUS SERVICE MANUAL w w w i n n o v a i r c o m P W N U 46 ...

Страница 49: ...INNOVAIR INVERTER VEXUS SERVICE MANUAL N V N W 47 ...

Страница 50: ...ridge rectifier Replace the bridge rectifier No Check whether bridge rectifier is normal Check whether bridge rectifier is normal Check the wiring of reactor or inductance Check the wiring of reactor or inductance Reconnect the wiring Reconnect the wiring No Check whether reactor or inductance is normal Check whether reactor or inductance is normal Yes Replace reactor or inductance Replace reactor...

Страница 51: ...rcuit Supposed causes Power supply problems System leakage or block PCB faulty Trouble shooting Check the power supply Check the connections and wires Stop the unit No Yes No Correct the connections or replace the wires Yes Replace the reactor Yes No Replace the IPM board Check the voltage between P and N Check the reactor Yes No Replace outdoor main PCB Remark Measure the DC voltage between P and...

Страница 52: ... than limited value the LED will display the failure Supposed causes IPM radiator problem PCB faulty Trouble shooting Yes Tighten the screws and apply silicon grease Tighten the screws and apply silicon grease Replace the outdoor control PCB Replace the outdoor control PCB No Check if the fastening screws on the PCB and IPM radiator are fixed tightly Check if the fastening screws on the PCB and IP...

Страница 53: ...t the connection or replace the wires and connectors No Check if the IPM installed correctly Correct the installation tighten the screws and apply silicon grease No IPM continuity check Check if the IPM terminal resistance values are uniform Yes Replace the IPM board or replace the main PCB if the IPM board and main PCB are integrated together No Check if the outdoor fan runs properly or the outdo...

Страница 54: ...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 Normal resistance value Digital tester Normal resistance value Red Black Several MΩ Red Black Several MΩ P N U N U V V W W Red 52 ...

Страница 55: ...r Replace the bridge rectifier No Check whether bridge rectifier is normal Check whether bridge rectifier is normal Check the wiring of reactor or inductance Check the wiring of reactor or inductance Reconnect the wiring Reconnect the wiring No Check whether reactor or inductance is normal Check whether reactor or inductance is normal Yes Replace reactor or inductance Replace reactor or inductance...

Страница 56: ...Yes Yes Connect it well Connect it well Replace outdoor main board Replace outdoor main board No Replace low pressure protector Replace low pressure protector No Whether the low pressure protector is broken Whether the low pressure protector is broken Check whether the outdoor ambient temperature is too low Check whether the outdoor ambient temperature is too low No Stop the unit Stop the unit Yes...

Страница 57: ...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 Measure the resistance value of each winding by using the multi meter 55 ...

Страница 58: ...41 5878 37 99 5 87359 77 171 1 29078 117 243 0 38991 2 28 38 8239 38 100 5 62961 78 172 1 25423 118 244 0 37956 1 30 37 1988 39 102 5 39689 79 174 1 2133 119 246 0 36954 0 32 35 2024 40 104 5 17519 80 176 1 17393 120 248 0 35982 1 34 33 3269 41 106 4 96392 81 178 1 13604 121 250 0 35042 2 36 31 5635 42 108 4 76253 82 180 1 09958 122 252 0 3413 3 37 28 9058 43 109 4 5705 83 181 1 06448 123 253 0 33...

Страница 59: ...167 8 084 115 239 2 422 4 25 222 8 36 97 34 32 76 169 7 82 116 241 2 357 3 27 211 4 37 99 32 94 77 171 7 566 117 243 2 294 2 28 200 7 38 100 31 62 78 172 7 321 118 244 2 233 1 30 190 5 39 102 30 36 79 174 7 086 119 246 2 174 0 32 180 9 40 104 28 15 80 176 6 859 120 248 2 117 1 34 171 9 41 106 28 81 178 6 641 121 250 2 061 2 36 163 3 42 108 26 9 82 180 6 43 122 252 2 007 3 37 155 2 43 109 25 86 83 ...

Страница 60: ... 32 88 6 63 145 4 94 201 2 125 257 4 38 2 33 91 4 64 147 2 95 203 126 258 8 4 5 40 1 34 93 2 65 149 96 204 8 127 260 6 5 41 35 95 66 150 8 97 206 6 128 262 4 6 42 8 36 96 8 67 152 6 98 208 4 129 264 2 7 44 6 37 98 6 68 154 4 99 210 2 130 266 8 46 4 38 100 4 69 156 2 100 212 131 267 8 9 48 2 39 102 2 70 158 101 213 8 132 268 6 10 50 40 104 71 158 8 102 215 6 133 271 4 11 51 8 41 105 8 72 161 6 103 ...

Страница 61: ...pendix 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 module With partial active PFC module With fully active PFC module 200VDC 310VDC 370VDC 450VDC 59 ...

Страница 62: ... i n n o v a i r c o m 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 Blue Black Red Blue 1 57Ω 60 ...

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