JennAir Frost Accumulation / Defrost System Issue

Frost or ice buildup on the back wall or around the evaporator inside the wine cooler.

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 heater, Failed defrost thermistor, Door gasket leak allowing moist air in, Frequent door openings

Safety: Unplug the unit before defrosting or accessing the evaporator.

Steps:

Manual defrost: Remove all bottles, unplug the unit, and allow ice to melt completely. Place towels to catch water. Do not use sharp tools to chip ice.
Inspect gasket: Replace a damaged or leaking door gasket to reduce moisture infiltration.
Test defrost components: See E4/F4 for testing the defrost heater and thermistor. Replace faulty parts.
Usage habits: Minimize door openings and avoid leaving the door ajar.

Medium 3/5

Defrost Heater

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