Thermador Door Mullion Heater or Condenser Overheating

Warm air or condensation around door edges; doors feel hot.

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Possible Causes

Dirty condenser coils, Inoperative condenser fan, High ambient temperature, Mullion heater running continuously

How to Fix / Troubleshooting

Safety first: Unplug the refrigerator before cleaning coils.

Steps to check:

  • Clean condenser: Vacuum and brush the condenser coils to improve heat dissipation.
  • Check condenser fan: Ensure the fan runs when the compressor is on. Replace if not operating.
  • Ventilation: Confirm adequate clearance around the refrigerator for airflow.
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Repair Difficulty

Easy 2/5

Required Part

Condenser Fan Motor
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