Insignia
Evaporator Coil Freezing
Unit runs but ice forms on the evaporator coil or front grille; airflow may decrease and cooling stops.
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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
Very low indoor temperature setting, Restricted airflow from dirty filter or coil, Low refrigerant charge, Faulty evaporator temperature sensor not stopping compressor
How to Fix / Troubleshooting
Safety first: Unplug the unit before defrosting. Place towels to catch melting ice.
Steps to correct freezing:
- 1. Thaw the coil: Turn the unit off and allow all ice to melt completely. Do not chip ice with sharp objects.
- 2. Clean filter and coil: Ensure the air filter and evaporator coil are clean to restore proper airflow.
- 3. Adjust temperature and fan: Set the thermostat a bit higher and use MED or HIGH fan speed to reduce freezing risk.
- 4. Check sensor: Verify the evaporator thermistor is properly attached to the coil. Replace if faulty.
- 5. Professional check: If freezing recurs despite good airflow and sensor operation, the unit may be low on refrigerant and should be checked by a licensed technician.
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Repair Difficulty
Medium
3/5
Required Part
Evaporator Temperature Sensor
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