Whirlpool High Humidity / Mullion or Door Heater Issue

Condensation or moisture on exterior of refrigerator cabinet or around door gaskets.

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

High room humidity, Mullion heater turned off (energy saver mode), Failed mullion heater strip, Poor door gasket seal

Safety First: Unplug the refrigerator before checking electrical heater strips if panels must be removed.

Steps:

Check settings: Turn off any "Energy Saver" or "Moisture Control" mode that disables door/mullion heaters.
Improve environment: Reduce room humidity with ventilation or a dehumidifier.
Inspect gaskets: Ensure door gaskets seal properly to prevent warm, moist air from entering.
If moisture persists along the mullion between doors and the heater strip tests open, replace the mullion heater assembly.

Medium 3/5

Mullion Heater

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