Goldstar Refrigerator has frost or moisture buildup around the door
Frost or moisture collecting around the mullion flap usually means the mullion heater is failing to heat and melt condensation, so start by testing the mullion heater for continuity with a multimeter and replace it if it shows an open circuit. If the heater checks out, the next most likely causes are a damaged or misaligned door support or door guide that prevent the mullion flap from forming a tight seal, followed by a twisted or torn door gasket that lets warm, humid air into the cabinet. In some cases the problem is simply that a fridge or freezer door was left open long enough for frost to build up; the frost will clear after a proper defrost cycle once the door seals correctly. This issue can also look like refrigerator not defrosting or fridge door not sealing problems, so inspect seals and alignment while you troubleshoot. Enter your model number on RepairClinic.com to find the exact replacement mullion heater, door support, door guide, or gasket that fits your refrigerator and get the part you need to fix it.
01 - Goldstar 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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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.
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.
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.
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 cold but fridge warm — could frost around the door cause this?
Refrigerator door not closing properly — what parts should I check?
Refrigerator not cooling — can a bad door gasket cause frost and poor cooling?
Refrigerator not defrosting — how do I check the mullion heater?
How do I enter my model number or part number on RepairClinic.com to find the correct replacement part?