Montpellier Condensation / Mullion Heater or Seal Issue

Condensation or water droplets forming on exterior cabinet or around door seal

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Possible Causes

High ambient humidity, Door gasket not sealing properly, Mullion heater (if fitted) not operating, Frequent door openings

How to Fix / Troubleshooting

Safety: No electrical hazard, but wipe up moisture to prevent slips.

  • Improve ventilation: Ensure adequate airflow around the freezer and avoid placing it next to heat sources.
  • Check door seal: Inspect and clean the gasket to ensure a tight seal.
  • Reduce door openings: Minimize how often and how long the door is open, especially in humid weather.
  • Check mullion heater: On models with a warm strip around the door frame, verify that it is slightly warm during operation. If cold and condensation is heavy, 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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