Chigo
Outdoor Coil Icing / Defrost Failure
Outdoor unit coil heavily iced over in heating mode; poor heating performance.
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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 outdoor coil temperature sensor on Chigo unit, Defective defrost control on outdoor PCB, Low outdoor fan speed, Low refrigerant charge
How to Fix / Troubleshooting
Safety first: Turn off power before removing panels or chipping ice.
- Step 1 – Allow defrost: Turn the unit off and let the ice melt naturally. Do not use sharp tools to remove ice.
- Step 2 – Check fan and coil: After thawing, ensure the outdoor fan runs properly and the coil is clean.
- Step 3 – Sensor/PCB check: If icing recurs and the unit does not enter defrost, a technician should test the outdoor coil temperature sensor and defrost logic on the outdoor PCB.
- Step 4 – Refrigerant check: Have a professional verify refrigerant charge and correct if necessary.
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Repair Difficulty
Hard
4/5
Required Part
Outdoor Coil Temperature Sensor
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