F6
Chigo
Compressor Current / IPM Module Protection (Inverter Models)
Indoor unit displays F6 and compressor operation is limited; unit may not reach set temperature.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Faulty IPM (Intelligent Power Module) on Chigo outdoor PCB, Shorted compressor windings, Poor electrical connections on power terminals, Overload due to blocked condenser coil
How to Fix / Troubleshooting
Safety first: This involves high-voltage inverter electronics. Only qualified personnel should work inside the outdoor control box.
- Step 1 – Clean condenser coil and ensure airflow: Remove debris and ensure the fan and coil are clean to reduce compressor load.
- Step 2 – Inspect power terminals: With power off, tighten all line and compressor terminals. Look for signs of overheating.
- Step 3 – Professional testing: A technician should test compressor winding resistance and insulation, and check the IPM module on the outdoor PCB for shorts.
- Step 4 – Replace defective parts: Replace the outdoor main PCB (with IPM) or compressor as indicated by test results.
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Repair Difficulty
Professional Required
5/5
Required Part
Outdoor Main PCB
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