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HomeRepair HelpModern Maid Refrigerator RepairModern Maid Refrigerator has frost or moisture buildup around the door Repair
Modern Maid Refrigerator has frost or moisture buildup around the door
If you have frost or moisture building up on the center mullion or around the doors, the most common cause is a mullion heater that no longer heats to melt condensation; you can quickly test it with a multimeter for continuity and replace the mullion heater if it reads open. Next check the door support and door guide for wear or misalignment, since a warped support or damaged guide will keep the mullion flap from sealing and let humid air in. Inspect the door gasket for twists, gaps, or tears that prevent an airtight seal and allow warm, moist air to enter the compartment. Also rule out simple user error like a freezer or refrigerator door left open for hours, which can leave frost that disappears after a proper defrost cycle. If you need parts, enter your model number on RepairClinic.com to see the exact mullion heater, door support, door guide, or gasket that fits your refrigerator so you can get the repair done right.
01 - Modern Maid 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 - Modern Maid 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 - Modern Maid 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 - Modern Maid 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?
Can a bad mullion heater make my fridge not cooling properly or cause frost buildup?
My freezer is cold but the fridge is warm, could the door gasket or mullion heater be the problem?
How do I test a mullion heater with a multimeter?
How do I enter my model number or part number on RepairClinic.com to find the right replacement part?
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