Heat Siphon Excessive Coil Icing / Defrost Problem

Ice buildup on the evaporator coil or around the top of the unit during operation.

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

Low airflow across coil, Low refrigerant charge, Faulty defrost sensor, Operation in very cold, humid conditions

Safety first: Turn off power before removing ice manually; do not use sharp tools.

Allow defrost: Turn the unit off and let the ice melt naturally. Do not chip or pry ice from the coil.
Clean coil and clear obstructions: Remove debris and ensure adequate clearance around the unit.
Check fan operation: Confirm the fan runs at full speed when the unit is on.
Sensor/charge check: If icing recurs quickly, have a technician test the defrost sensor and refrigerant charge.

Hard 4/5

Defrost / Coil Temperature Sensor

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