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Customer Questions and Answers for Thermistor by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18018213
Manufacturer Part Number: WP2188820

The Thermistor is an OEM replacement part for Whirlpool refrigerators. This temperature-sensitive sensor monitors conditions inside refrigerator and freezer compartments. It provides critical feedback to the electronic control module, regulating cool air temperature in both sections.

Symptoms of a faulty thermistor include:

  • Fluctuating temperatures where sections become too warm or cold  
  • Frequent cycling of evaporator fans and cooling components
  • Defrost issues or Er/Ed error codes shown on displays

Causes can involve regular exposure to changing interior environments over many years. Mineral deposits accumulating may lead to sensor surfaces becoming insulated. Physical stress from overloading could potentially crack the thermistor over time as well. 

This OEM replacement part is compatible with some Kenmore Elite models too.

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Questions & Answers

For Whirlpool Thermistor (Part Number: OEM18018213)

1 Answer

Brian R, Based on the information provided the temperature sensor is located on the right wall of the refrigerator section.

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1 Answer

Thomas, Depending on the thermistor, open the freezer or refrigerator door and remove any items from the shelf that are in front of the thermistor. It may be necessary to remove the shelf as well. Remove the hex-head screw from the thermistor cover. Pull the cover forward at the screw end, and unhook the tab from the slot at the other end of the thermistor cover. Disconnect the 2-wire connector and remove the thermistor. Reverse the procedure and check for proper temperatures in 12 to 24 hours. Thanks,

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1 Answer

Brian, In the refrigerator compartment on the right side wall or the back wall will be a small cover the will have the thermistor under it. There will also be one around where the control housing for the damper is at the top. In the freezer would have one on the left side wall with a cover over it that is held in by a screw.

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1 Answer

Hello Kelvin, this model has 2 thermistors for temperature sensing one in the freezer and one in the fresh food section, the part you are describing in the freezer attached to the evaporator coil is the defrost bi-metal thermostat part WP2306462.t

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1 Answer

Hello, the thermistor is located on the rear wall of the refrigerator behind a cover that has three slots on it and one screw holding it on. Hope this helps!

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George S for Model Number kssc48qks02

We bought thermistor from you but can no locate where to put it in the freezer .it is not in the place shown your drawings. when the inside back panel is removed I find the the bi metal defrost switch but no thermistor or any plug looks like the new one we have wp2188820 is it possible it is behind the upper panel just below the ice maker ? if so tell me how to remove that panel the problem I am trying to fix is the freezer runs at - 22 deg f no matter where you set the thermostat much to cold ice cream is like a rock . please help me ant thanks in advance

1 Answer

George, The thermistor will be located on the wall or on the back panel of the freezer section and would be under a cover.

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1 Answer

Larry at room temp the resistance for the thermistors would be 2.7K ohms and would be within specs for the part. Based on information found the resistance in ice water would be correct and the thermistors would be good.

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