Café Door Condensation / Mullion Heater Issue

Condensation or moisture forming around the freezer door gasket or on exterior surfaces

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Possible Causes

High room humidity, Door gasket leaking warm air, Mullion or door heater not operating (if equipped), Frequent door openings

How to Fix / Troubleshooting

Safety first: Most checks can be done with power on; avoid removing exterior panels while energized.

  • Check gasket seal: Inspect and replace damaged gaskets to reduce warm, moist air infiltration.
  • Use energy saver settings appropriately: Some Café models have an energy saver or moisture control switch that turns door heaters off. If you see condensation, turn moisture control on.
  • Reduce humidity: Use a dehumidifier in very humid rooms and avoid leaving the door open for extended periods.
  • Heater circuit check: If condensation persists with moisture control on, the mullion heater circuit or control board may be faulty and require technician diagnosis.
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Repair Difficulty

Easy 2/5

Required Part

Door Gasket
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