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Customer Questions and Answers for Defrost Timer Kit by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM12740400
Manufacturer Part Number: R0131577

The Refrigerator Defrost Timer is an OEM Replacement Part designed to manage the automatic defrost system in Whirlpool freezers. Housed at the top inside of the appliance, this component shuts off the cooling system and activates the defrost heater. The timer operates at 120V 60Hz and activates for 33 minutes every 8 hours. The dial on the timer can be turned clockwise to advance it into and out of defrost.

Causes of a faulty Defrost Timer Kit can include electrical issues, mechanical wear and tear over time, or problems with the timer's internal components.

Symptoms of a bad Defrost Timer Kit include:

  • Freezer not defrosting properly, leading to excessive ice buildup
  • Refrigerator running constantly or not cooling effectively
  • Condensation or moisture issues inside the refrigerator
  • Error codes related to the defrost system

This OEM 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 Timer Kit (Part Number: OEM12740400)

1 Answer

Hi Walt. Yes, you will need to replace the defrost timer if it is not advancing on it's own. This part # is R0131577. The timer has 2-Heavy Clicks (amongst the tiny clicks), You will advance the timer through the 1st heavy click to the next 2nd heavy click. This will begin you in the run - time of your compressor for approximately 6.5 hrs. Thank you.

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1 Answer

Hi Cat. If your evaporator fan motor is not working, it cannot blow freezer cold air up into the fresh food for circulation. This part # is WP10513803. Thank you.

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1 Answer

Hello John. You do not need to set the timer. Just let it go through the cycle. Hope this helps.

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1 Answer

Hello Ken. You will need to check and see if the unit is stuck in defrost. You can manually turn the defrost timer R0131577 and see if the unit starts. If so, you will need to replace the timer. Hope this helps.

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1 Answer

Hello Dan. The defrost cycle is based on the timer. It usually cycles about every 8 to 9 hours. Hope this helps.

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1 Answer

Hello Sam. Look and see if there is a defrost problem. Also check and see if the evaporator fan motor WP10513803 is running properly. If all of this is good, you will need to check and make sure the coils under the refrigerator is clean and the condenser fan 833697 is running. Hope this helps.

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1 Answer

Hello Joe. You can test the heater and the thermostat when the unit is cold. They should read closed for continuity. You can test these with a multi-meter MA-DM1. Hope this helps.

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