Poolex
Excessive Frost / Defrost Failure
Poolex pool heater frequently ices up on the evaporator coil and struggles to defrost.
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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
Restricted airflow across evaporator, Faulty defrost sensor, Incorrect defrost settings on Poolex controller, Low refrigerant charge
How to Fix / Troubleshooting
Safety: Turn off power before cleaning coils. Do not chip ice with sharp tools.
Steps:
- Clean coil and fan guard: Remove debris that restricts airflow.
- Check clearances: Ensure the unit has adequate space around it for air circulation.
- Allow manual defrost: Turn the unit off and let it thaw completely. Then restart and observe how quickly ice forms.
- Verify defrost mode: On models with adjustable defrost, ensure factory settings are used unless advised otherwise by Poolex.
If icing persists, a technician should test the defrost sensor, reversing valve, and refrigerant charge.
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Repair Difficulty
Medium
3/5
Required Part
Defrost Temperature Sensor
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