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HomeRepair HelpUniversal Refrigerator RepairUniversal Refrigerator has frost or moisture buildup around the door Repair
Universal Refrigerator has frost or moisture buildup around the door
Frost or moisture forming around the refrigerator door most often points to a failed mullion heater flap that no longer heats enough to melt condensed moisture, but worn or misaligned door support and door guide parts and a damaged door gasket are the next most likely causes. Start by checking the mullion heater for electrical continuity with a multimeter and replace it if it shows an open circuit. If the heater tests good, inspect the door support and door guide for wear or misalignment that prevents the flap from sealing between the doors. Check the door gasket for twists, tears, or gaps that let warm, humid air in and cause frost to build up; replace the gasket if it does not seat tightly. Also confirm the doors have not been left open for extended periods, since that will cause temporary frost that should clear after a defrost cycle. If you need replacement parts, enter your model number on RepairClinic.com to see the exact mullion heater, door support, door guide, or gasket that fits your refrigerator.
01 - Universal 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 - Universal 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 - Universal 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 - Universal 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
Freezer working but fridge not cooling — could frost around the door cause that?
How do I test the mullion heater to see if it needs replacing?
My refrigerator has frost on the mullion flap — could a door support or door guide be the cause?
How do I check the door gasket when there is moisture buildup around the door?
How do I find the correct replacement part on RepairClinic.com using my model number or part number?
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