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Customer Questions and Answers for Defrost Heater Assembly by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18030324
Manufacturer Part Number: WP61006199

The Defrost Heater Assembly is an OEM replacement part for Whirlpool refrigerators. Located behind the freezer walls, it prevents ice buildup during automatic defrost cycles. Consistent performance is needed to maintain ideal temperatures. The defrost thermostat is included in the assembly.

Causes of a bad defrost heater assembly can include overheating from being covered in frost, corrosion from moist environments, or broken filaments due to vibration.

Symptoms include: 

  • Ice accumulating on freezer walls instead of melting away
  • Refrigerator failing to properly defrost 
  • Fault codes displayed related to defrost functions

Compatible with KitchenAid, Jenn-Air, and other brands, it ensures prolonged efficiency.

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Questions & Answers

For Whirlpool Defrost Heater Assembly (Part Number: OEM18030324)

John L. for Model Number MSD2756AE Maytag

The coils keep freezing causing the unit to loose air flow and melting everything. Fridge was closed for two months while I was away so it wasn't constantly an open and closing issue. I returned to a smelly house of rotting food in the freezer. Why is this happening. Also found that the door ice/ water dispencer would not work. After removing the front plate I fount the front of the plastic was melted on the right hand side in front of the door actuator. What could have cost this to go and is it worth investing in to replace? Or should I get a new fridge? Thank you

1 Answer

Hi John. The fountain control button that calls for ice had the chute solenoid to open. A very common failure that the chute solenoid stuck open physically and overheated. This melted the inner control mount bracket. This part # is WP61003407. The ice door kit is part # 12001991. If the chute was open , it will cause A no- cool. Is the back wall of t6he freezer full of frost build up? If so this will cause a no- cool. The defrost thermostat is part # WP61006199. The defrost electronic timer is part # 61005988. Thank you.

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1 Answer

Pat, You're on the low side of what I'd expect to see(23 to 25 ohms), but the heater is still within tolerances. Any resistance would indicate a good heater element. What seems to be the issue with the fridge ?

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1 Answer

Hi Thomas. You can test the thermostats and heating element with a multi meter MA-DM1. They should read closed when they are cold. If they test okay then you will want to replace the defrost timer 61005988. Hope this helps!

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1 Answer

Hello Allen. Check and make sure the coils are clean and the condenser fan is running properly. Hope this helps.

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1 Answer

Hello Jaclyn! Is there frost building on the back wall of the freezer? If so, you will have a defrost system problem. The defrost is made up of three main components; defrost heater and thermostat assembly WP61006199, defrost timer board 61005988. and the defrost thermostat. You can visit our free repair forum to help diagnose which part has gone out. Here is the link to register and post a question, thanks! http://forum.appliancepartspros.com/register.php

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1 Answer

Hello Allen. If the refrigerator is not defrosting properly, it will cause the refrigerator to run continuously. Hope this helps.

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1 Answer

Hello Dave. You can test the heater and thermostat with a multi-meter. They should read closed or 0 for continuity. We will need your model number to further assist you. Hope this helps.

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