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QUARTZ INVERTER

TROUBLESHOOTING GUIDE

QIN415H2V31

QIN618H2V31

QIN721H2V31

QIN1129H2V31

INVERTER MINI SPLIT SYSTEM

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.

©2015 Innovair Corporation. All Rights Reserved.

www.innovair.com

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Содержание QIN1129H2V31

Страница 1: ...h 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 2015 Innovair Corporation All Rig...

Страница 2: ...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 2015 Innovair Corporation All Rights Reserved www innovair com ...

Страница 3: ...scharge temperature sensor T5 open circuit or short circuit 5 times O F4 Outdoor 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 compressor top diagnosis and solution only for 9k 12k models 4 times P3 O...

Страница 4: ...n 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 not same totally with the ones...

Страница 5: ...t 2 minutes later No 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 wiring connection Replace the indoor main PCB Power on Is the error extinguished Replace the indoor main PCB Power on Is the error extinguished Yes Replace the outdoor main PCB Replace the outdoor ...

Страница 6: ...to 50V 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 must have malfunction and need to be replaced 2015 Innovair C...

Страница 7: ...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 2015 Innovair Corporation All Rights Reserved www innovair com ...

Страница 8: ... ass y faulty Fan motor faulty PCB faulty Trouble shooting Power off then restart the unit 2 minutes later Shut off the power supply Rotate the fan by hand The unit operates normally Find out the cause and have it solved Check the wiring of fan motor No Yes No Correct the connections No No Replace the fan motor Yes Yes Measure the voltage for the fan motor from the main PCB Yes Replace the main PC...

Страница 9: ...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 fan motor must have problems and need to be replaced otherwise ...

Страница 10: ...0 06V or higher than 4 94V the LED will display the failure Supposed causes Wiring mistake Sensor faulty PCB faulty Trouble shooting Check the connection between temperature sensor and PCB Correct the connection No Yes Replace indoor or outdoor main PCB Measure the resistance value of the sensor Repalce the sensor No Yes 2015 Innovair Corporation All Rights Reserved www innovair com ...

Страница 11: ...tuation happens 3 times the display area will show EC and AC will turn off Supposed causes T2 sensor faulty Indoor PCB faulty System problems such as leakage or blocking Trouble shooting Check cool air blowing out from indoor air outlet Yes Yes Check if T2 sensor No Check leakage of system No Power off then restart the unit 2 minutes later Replace indoor PCB Yes Repair the leakage and recharge the...

Страница 12: ...lockage PCB faulty Wiring mistake Compressor malfunction 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 outdoor unit Yes Check the reactor No Replace outdoor main PCB Check the blockage of system Yes No Clear the blockage Check the compressor resistance values Yes No Replace the compressor 2015 Innovair Co...

Страница 13: ...pressor malfunction Outdoor PCB faulty Trouble shooting Check the wiring between main PCB and compressor Correct the connection or replace the wires and connectors Yes No Check the IPM No Yes Replace the IPM board or replace the main PCB Check the outdoor fan and the outdoor unit ventilation No Please refer to the solution of Fan Speed Has Been Out Of Control malfunction Yes Check the compressor r...

Страница 14: ...38 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 2015 Innovair Corporation All Rights Reserved www innovair com ...

Страница 15: ...39 P W N U 2015 Innovair Corporation All Rights Reserved www innovair com ...

Страница 16: ...40 N V N W 2015 Innovair Corporation All Rights Reserved www innovair com ...

Страница 17: ...em 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 N port The normal value should be around 310V P...

Страница 18: ...low system of indoor and outdoor units Clear up the air inlet and outlet or the heat exchanger of indoor and outdoor units Yes No Yes Yes Power off then restart the unit 10 minutes later Check if the temperature of compressor No Check refrigerant system Yes Check the overload protector Correct the connection No Measure the resistance between the two ports of the OLP Is it zero Yes Replace the OLP ...

Страница 19: ...or fan ass y faulty Compressor malfunction Outdoor PCB faulty Trouble shooting Check the wiring between main PCB and compressor Correct the connection or replace the wires and connectors Yes No Check the IPM No Yes Replace the IPM board or replace the main PCB Check the outdoor fan and the outdoor unit ventilation No Please refer to the solution of Fan Speed Has Been Out Of Control malfunction Yes...

Страница 20: ...gn and specifications are subject to change without prior notice for product improvement Consult with the sales agency or manufacturer for details 2015 Innovair Corporation All Rights Reserved www innovair com ...

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