Display shows E3; unit may not start or may shut down after a short run.

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

Defective defrost sensor, Ice buildup on evaporator, Blocked airflow, Faulty defrost control on PCB

Safety first: Unplug the unit.

Defrost coil: Remove covers and allow all ice on the evaporator to melt completely. Dry the area.
Clean filter and coils: Wash the air filter and gently clean dust from the evaporator and condenser coils.
Check fan operation: Ensure the fan runs at full speed; a weak fan can cause icing.
Test defrost sensor: Inspect and test the defrost thermistor as described for H24. Replace if faulty.
PCB issue: If icing and sensor issues are resolved but E3 persists, the defrost control on the main PCB may be defective.

Medium 3/5

Defrost Thermistor

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