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HomeRepair HelpCaloric Refrigerator RepairCaloric Refrigerator has frost or moisture buildup around the door Repair
Caloric Refrigerator has frost or moisture buildup around the door
If you have frost or moisture buildup around the center mullion flap, the most likely cause is a mullion heater that has failed to heat and melt condensation; test the mullion heater for continuity with a multimeter and replace it if it shows an open circuit. Next check the door support and door guide for damage or misalignment, since a worn hinge or guide can prevent the mullion flap from forming a tight seal between the doors. Inspect the door gasket for twists, tears, or gaps that let warm, humid air in and cause frost to form, and make sure neither the refrigerator nor freezer door has been left open for an extended time, which will also produce temporary frost until the unit completes a defrost cycle. If moisture is pooling or dripping, a bad seal is often the root cause. For the exact replacement mullion heater, door support, door guide, or gasket that fits your machine, enter your model number on RepairClinic.com and we will show the correct part for your refrigerator so you can fix the problem yourself.
01 - Caloric Refrigerator Mullion Heater
A defective mullion heater flap may not be able to heat up periodically to melt any frost or moisture that forms on the flap due to increases in room humidity. You can use a multimeter to test the mullion heater for electrical continuity to determine if the component is working. If the mullion heater has no electrical continuity you should replace it with a new one.
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Common
02 - Caloric Refrigerator Door Support
If the mullion heater flap has frost or moisture buildup, it's possible the door suport is damaged or misaligned and not allowing the flap to form a tight seal between the refrigerator doors. Inspect the door support for wear or damage and replace if necessary.
Common
03 - Caloric Refrigerator Door Guide
If the mullion heater flap has frost or moisture buildup, it's possible the door guide is damaged or misaligned and not allowing the flap to form a tight seal between the refrigerator doors. Inspect the door guide for wear or damage and replace if necessary.
Common
04 - Caloric Refrigerator Door Gasket
A door gasket should form an airtight seal around the appliance's frame to keep the cold air in and the warm air out. If the door gasket is twisted or torn, gaps can form that will allow warm air in, resulting in the freezer not freezing properly. Inspect the door gasket for any damage and replace with a new one if necessary.
Common
05 - Refrigerator or freezer door left open
If the freezer or refrigerator door was left open for an extended period of time (more than 4 hours), frost may have accumulated on the food and around the door opening. The frost should go away after the door is closed and the refrigerator goes through a defrost cycle.
Common
Frequently Asked Questions
My refrigerator door not closing properly is causing frost around the mullion. What should I check?
Freezer is cold but fridge warm with moisture at the door, could a mullion heater be the problem?
How do I test the mullion heater and know if it needs replacing?
Could a misaligned door guide or door support cause frost or moisture buildup around the door?
How do I enter my model number or part number on RepairClinic.com to find the correct replacement part?
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