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Customer Questions and Answers for Defrost Drain Heater- Probe by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM9359880
Manufacturer Part Number: 819043

The Defrost Drain Tube Heater Probe is an OEM replacement part for Whirlpool refrigerators. Located near the drainage tube in the refrigerator liner, this probe monitors and controls the defrost drain tube heater.

Causes of a bad defrost drain tube heater probe include cracked solder joints or wiring connections due to normal vibration over time. Without the proper functioning of this probe, the drain tube heater will not activate during defrost cycles.

Symptoms of a bad defrost drain tube heater probe include:

  • Accumulation of ice or water in the drain tube drainage area  
  • Inability to fully defrost and clear buildup from the drain tube
  • Error codes indicating heating element issues

This OEM Whirlpool part is also compatible with Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore models. 

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Questions & Answers

For Whirlpool Defrost Drain Heater- Probe (Part Number: OEM9359880)

1 Answer

Hello Karen. It sounds like the drain is not cleaned out good. Try cleaning it out again. You can use a probe if needed on the unit.

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1 Answer

Hello Scott, This part 819043 may work on your unit but you need to make certain it cannot contact any plastic inside the freezer compartment. Since it get as hot as the heating element, this could damage the unit beyond repair. Depending on the application, this part may have to be trimmed down shorter.

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1 Answer

Scott, Yes the 819043 defrost heat probe will work in your refrigerator. An easier and less intrusive part is the W10841299 "duck bill" which is installed in the end of the defrost pan drain tube and it's just as effective as the heat probe.

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1 Answer

Hello Woody. 1. Unplug refrigerator or disconnect power. 2. Remove evaporator cover. 3. Remove drain pan. NOTE: On plastic liner design, remove nylon drain insert and discard. 4. Defrost the drain and clear any ice from liner bottom and drain hole. 5. Check and remove any foreign objects from drain hole. 6. Re-install drain pan. NOTE: On plastic liner design, place drain insert into drain hole flush with pan. 7. Place heat probe from kit over the heater so that the probe extends down into the drain. 8. Screw clip so that good contact is made with the heater surface. 9. Replace evaporator cover. 10. Remove unit cover (forced air models only). 11. Seal drain to metal cabinet using permagum. 12. Replace unit cover, if present. 13. Plug in refrigerator or reconnect power.

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