Error code F dH displayed, unit may show heavy frost and poor cooling.

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

Open defrost heater, Failed defrost thermostat, Broken heater wiring, Defective main control board defrost relay

Safety first: Disconnect power and be cautious of sharp metal fins.

Steps:

1. Manually defrost: Remove interior panel, melt ice with a hair dryer on low, and dry the area.
2. Test heater: Disconnect heater leads and check continuity. Replace if open.
3. Test thermostat: When cold, the thermostat should show continuity. Replace if it remains open.
4. Inspect wiring: Repair any burnt or broken wires to the heater.
5. If components are good: The main control board may not be energizing the heater and may require replacement.

Hard 4/5

Defrost Heater

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