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HomeRepair HelpEstate Refrigerator RepairEstate Refrigerator defrost drain clogged Repair

Estate Refrigerator defrost drain clogged

If your refrigerator has a defrost drain clogged or frozen, start with the most likely cause: a stalled evaporator fan motor. When the evaporator fan does not run or is noisy, cold air can move into the drain area and turn the defrost drain frozen, so spin the fan blade by hand and, if it binds or hums, test the motor windings with a multimeter and replace the evaporator fan motor if it fails. If the drain itself is blocked or iced over, use a turkey baster or a funnel with warm water to flush the clog and make sure the drain tube trap and pan are clear. Check for a missing drain strap that conducts heat from the defrost heater into the drain; without it the drain is more prone to freeze. Less commonly, a faulty drain heater or a defective main control board that stops the defrost cycle can let ice build up. Enter your refrigerator model number on RepairClinic.com to find the exact replacement parts you need, from evaporator fan motors and drain straps to drain heaters and control boards.

01 - Estate Refrigerator Fan Motor

If the refrigerator's defrost drain is clogged, it's possible the evaporator fan motor is not working. If the evaporator fan is not running, cold air from the evaporator can migrate to the defrost drain causing ice buildup in the drain. To determine if the evaporator fan motor is defective, try turning the fan blade by hand. If the fan blade does not turn freely, replace the fan motor. Additionally, if the motor is unusually noisy, replace it. Finally, if the motor does not run at all, use a multimeter to test the motor windings for continuity. If the windings do not have continuity, replace the evaporator fan motor.
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02 - Clogged or Freezing Defrost Drain

The defrost drain might be clogged or frozen. If the defrost drain is frozen, the water will overflow the drain trough and drip down to the bottom of the compartment. You can use a turkey baster and warm water to help clear out a frozen defrost drain and tube. You should also make sure the drain tube trap is clear by the drain pan.
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03 - Estate Refrigerator Drain Strap

Some defrost drains are outfitted with a drain strap. The drain strap is a small piece of copper or aluminum that attaches to the defrost heater and extends partway into the defrost drain. When the defrost heater turns on, heat is conducted through the drain strap to melt away any ice that may have accumulated further down in the defrost drain. If the drain strap is not in place, the defrost drain may be more likely to freeze over.
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04 - Estate Refrigerator Evaporator Fan Motor

If the refrigerator's defrost drain is clogged, it's possible the evaporator fan motor is not working. If the evaporator fan is not running, cold air from the evaporator can migrate to the defrost drain causing ice buildup in the drain. To determine if the evaporator fan motor is defective, try turning the fan blade by hand. If the fan blade does not turn freely, replace the fan motor. Additionally, if the motor is unusually noisy, replace it. Finally, if the motor does not run at all, use a multimeter to test the motor windings for continuity. If the windings do not have continuity, replace the evaporator fan motor.
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05 - Estate Refrigerator Drain Heater

Some refrigerators are equipped with drain heaters. Drain heaters prevent the water in the drain pan from re-freezing and clogging the defrost drain. If your drain heater is defective or is not in the proper position, the defrost drain might freeze over.
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06 - Estate Refrigerator Main Control Board

The main control board regulates the power supply to all of the refrigerator components, including the defrost system. If the main control board is defective, it may stop sending voltage to the defrost system which can lead to the defrost drain becoming clogged with ice. Control boards are frequently misdiagnosed—before replacing the main control, first test all of the defrost system components. If none of the defrost system components are defective, consider replacing the control board.
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Less Common

Frequently Asked Questions

Why is my fridge not cooling but the freezer works?
How do I clear a defrost drain clogged or frozen?
How do I test the evaporator fan motor?
Could a bad main control board cause the defrost drain to clog?
How do I find the correct replacement part for my model on RepairClinic.com?

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