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HomeRepair HelpRoper Refrigerator RepairRoper Refrigerator has frost or moisture buildup around the door Repair
Roper Refrigerator has frost or moisture buildup around the door
Frost or moisture building up around the refrigerator mullion or door usually means the mullion heater flap is not heating properly, so start by checking the mullion heater with a multimeter for electrical continuity and replace it if it fails. If the heater checks out, look next at the door support and door guide for damage or misalignment that keep the mullion flap from sealing tightly. Worn or torn door gaskets are another common cause because gaps let warm, humid air in and can even cause the freezer to stop freezing properly. Less often the problem is simply that a door or freezer door was left open for an extended time; that frost will usually clear once the door is closed and the unit completes a defrost cycle. If you need parts, enter your model number on RepairClinic.com to find the exact replacement part for your specific refrigerator and get back to a tight seal and a dry mullion.
01 - Roper 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 - Roper 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 - Roper 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 - Roper 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
Why is there frost or moisture buildup around my refrigerator door?
Fridge not cooling but freezer works — can a bad seal or mullion heater cause this?
How do I check if the mullion heater is working?
I left the refrigerator door open and now there is frost around the door — will it melt on its own?
How do I find and buy the correct replacement part on RepairClinic.com?
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