Visible ice buildup on the evaporator coil or around the base of the heater
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.
Possible Causes
How to Fix / Troubleshooting
Safety first: Turn off power before removing ice manually. Do not use sharp tools on coils.
- Defrost the unit: Turn the heater off and allow ice to melt naturally. Use warm (not hot) water to speed melting if needed.
- Clean coil and surroundings: Remove debris from the coil and ensure adequate clearance around the unit for airflow.
- Check fan operation: Confirm the fan runs at full speed when the unit is on. A weak fan can cause icing.
- Monitor operation: After defrosting and cleaning, restart the heater and observe whether icing returns quickly.
Recurring icing in normal conditions suggests a defrost control or sensor problem. A technician should test the defrost sensor and control board.
Repair Difficulty
Required Part
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