Gaggenau Condensation Control / Mullion Heater Issue

Condensation or moisture forming on the exterior cabinet or around door seals.

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Possible Causes

High ambient humidity, Door gaskets leaking warm air, Mullion heater (if equipped) not operating, Poor door closure

How to Fix / Troubleshooting

Safety: No internal electrical work is typically required; unplug if removing panels.

Steps:

  • 1. Reduce humidity: Use ventilation or air conditioning in the room. Avoid placing the refrigerator near humidifiers.
  • 2. Check door seals: Inspect and clean gaskets. Replace if damaged (see gasket entry).
  • 3. Verify door closure: Ensure doors close fully and are not held open by items inside.
  • 4. Mullion heater (advanced): Some models have a heater in the door frame to reduce condensation. If condensation is severe along the mullion and other causes are ruled out, the heater circuit may be faulty and should be checked by a technician.
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Repair Difficulty

Easy 2/5

Required Part

Door Gasket
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