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QUARTZ INVERTER
TROUBLESHOOTING GUIDE
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.
QIN415H2V31
QIN618H2V31
QIN721H2V31
QIN1129H2V31
INVERTER MINI SPLIT SYSTEM
www.innovair.com
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Table of Contents
Troubleshooting
Related Manuals for innovair QIN415H2V31
Summary of Contents for innovair QIN415H2V31
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Page 1: Troubleshooting Guide
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... -
Page 2: Troubleshooting
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... -
Page 3: Indoor Unit Error Display
2) If the OUTDOOR temperature is higher than -22c for 10 minutes and compressor stop for 1 hour OR outdoor temperature is higher than -5C for 10 minutes, then the unit will return to work. ©2015 Innovair Corporation. All Rights Reserved. www.innovair.com... - Page 4 For the location of EEPROM chip, please refer to the below photos. Outdoor PCB Indoor PCB Note: The two photos above 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...
- Page 5 Replace the indoor main PCB. Replace the indoor main PCB. * Vs is the voltage between S and N ( for 115V 2014 models) *Vs is the voltage between 2 and 3 ( for 2015 models) ©2015 Innovair Corporation. All Rights Reserved. www.innovair.com...
- Page 6 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 Corporation. All Rights Reserved. www.innovair.com...
- Page 7 Trouble shooting: Check if the connections and Correct the connections. Turn on the power supply is normal? unit when the power supply is good. Indoor main PCB is defective. Replace indoor main PCB. ©2015 Innovair Corporation. All Rights Reserved. www.innovair.com...
- Page 8 Rotate the fan by hand. it solved Check the wiring of fan Correct the connections. motor Measure the voltage for the fan motor from the main Replace the main PCB Replace the fan motor ©2015 Innovair Corporation. All Rights Reserved. www.innovair.com...
- Page 9 Power on and set the unit running in fan mode at high fan speed. After running for 15 seconds, measure the voltage of pin1 and pin2. If the value of the voltage is less than 100V(208~240V power supply)or 50V(115V power supply), the PCB must has problems and need to be replaced. ©2015 Innovair Corporation. All Rights Reserved. www.innovair.com...
- Page 10 ● PCB faulty Trouble shooting: ● Check the connection between temperature Correct the connection sensor and PCB. Measure the resistance Repalce the sensor value of the sensor Replace indoor or outdoor main PCB ©2015 Innovair Corporation. All Rights Reserved. www.innovair.com...
- Page 11 Check cool air blowing out Check if T2 sensor from indoor air outlet Replace indoor PCB. Check leakage of system Repair the leakage and recharge the refrigerant. check blockIng of system and clear the blocking ©2015 Innovair Corporation. All Rights Reserved. www.innovair.com...
- Page 12 Clear the blockage Check the compressor Replace the compressor resistance values Check the connections and Correct the connections or wires replace the wires. Check the reactor Replace outdoor main PCB Replace the outdoor unit ©2015 Innovair Corporation. All Rights Reserved. www.innovair.com...
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Page 13: Ipm Malfunction Or Igbt Over-Strong Current Protection Diagnosis And Solution(P0)
Please refer to the solution of 【Fan Check the outdoor fan and the Speed Has Been Out Of Control】 outdoor unit ventilation malfunction Check the compressor resistance Replace the compressor. values Replace the outdoor main PCB ©2015 Innovair Corporation. All Rights Reserved. www.innovair.com... -
Page 14: For Example
For example: 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... - Page 15 ©2015 Innovair Corporation. All Rights Reserved. www.innovair.com...
- Page 16 ©2015 Innovair Corporation. All Rights Reserved. www.innovair.com...
- Page 17 Replace the IPM board and N Check the reactor Replace outdoor main PCB Replace the reactor Remark: Measure the DC voltage between P and N port. The normal value should be around 310V. ©2015 Innovair Corporation. All Rights Reserved. www.innovair.com...
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Page 18: High Temperature Protection Of Compressor Top Diagnosis And Solution(P2)
Check the overload Correct the connection. of compressor protector Measure the resistance between the two ports of Replace the OLP. Check refrigerant system the OLP. Is it zero? Replace the outdoor control PCB. ©2015 Innovair Corporation. All Rights Reserved. www.innovair.com... -
Page 19: Inverter Compressor Drive Error Diagnosis And Solution(P4)
Please refer to the solution of 【Fan Check the outdoor fan and the Speed Has Been Out Of Control】 outdoor unit ventilation malfunction Check the compressor resistance Replace the compressor. values Replace the outdoor main PCB ©2015 Innovair Corporation. All Rights Reserved. www.innovair.com... - Page 20 The design and speci cations 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...