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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: OEM18018210
Manufacturer Part Number: WP2188819

The Thermistor is an OEM part for Whirlpool refrigerators. It plays a critical role in regulating the temperature within the refrigerator and freezer compartments by monitoring and sending temperature readings to the control board, which then adjusts the cooling system accordingly.

Causes of a bad thermistor can include electrical faults, exposure to moisture, or physical damage from mishandling. A faulty thermistor can lead to incorrect temperature readings, causing the refrigerator to overcool or not cool sufficiently.

Symptoms of a bad Thermistor include:

  • Inconsistent temperatures within the refrigerator or freezer
  • The refrigerator running constantly or not at all
  • Spoiled food due to improper cooling
  • Error codes related to temperature regulation

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 Thermistor (Part Number: OEM18018210)

1 Answer

Hello James, You will want to check the damper assembly on unit to make sure it is not stuck open or warped. You will also want to check the resistance of the thermistor. The thermistor should read 2.7K ohms at room temp. The resistance will go up as the temp goes down.

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1 Answer

Hello Ketpur. You will remove the cover on the inside of the fresh food. Then remove the air duct assembly at the top inside the freezer. Once you remove it, you can access the clips and release the tabs securing the diffuser W10128726 in place and replace the part.

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Joseph T. for Model Number GS6NBEXRL02

I found ice covering the thermostat. When I tested it, it tested bad. I replaced it with a GE thermostat. I listened to a friend and replaced the start device. The compressor is too hot to touch. The unit will run normally if it is pulled out from the wall. If you push it 2 inches from the wall, the ice cubes start to melt. frost only cover 3 rows on the evaporator where the freon coming in.Fans are working ,At the compressor line out is hot and line in is cool. my question is: I need new unit or just install tap valve in low side and put in some 134 freon in.The unit is 4 years old.Thinking about replace thermistor .It read inf in any temperature Someone help. Thanks

1 Answer

Hello Joseph, If the unit runs too hot when pushed back to the wall, you need to check the condenser fan motor WP2188874. It is this fans job to help dissipate the heat the unit has removed form the unit interior, back into the room. The best test for this is to stop the fan and let go. If it starts turning slowly, or you have to bump it to get it started back up, it should be replaced. Of course, you should refer back to the installation instructions to insure there is enough room around the unit to allow for proper air flow. If you have a cabinet that fits the unit snugly, the entire issue may be a lack of air flow.

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1 Answer

Ketpur, you will need to check the diffuser W10128726. If the door is stuck open it will allow all the cold air from the freezer section into the refrigerator section at all times. Also, make sure that the refrigerator section is set at the proper control. To replace the thermistor WP2188819 turn the power off to the unit. The thermistor is in the refrigerator section. Remove the screw holding the control box in place. Once that is removed, remove the control box. You will see the thermistor. Unplug the thermistor. Reverse order to install. I hope this information helps you, thanks!

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Pho for Model Number KSSS48qmx00

I've almost changed all the guts from my kitchen aid which has a burned compressor and failed inverter: Compressor, evaporator, heater coil, inverter, control electronic, display. The freezer and fridge is cold at the desired temperature (-5, 34) but the compressor is running all the time even during at late night. I've just changed the thermistor without any effect. (The wiring from the thermistor to the control board is good too) The only things I've not changed is the power control. The amp at the inverter is 1.6 amp. A few time it goes down to .6 amp. I worried that if the compressor running all the time will lead to its burning out like it has happened before. Any idea or suggestion ?

1 Answer

Hello Pho. It is normal for the compressor to run and maintain the proper temperature. If the condenser fan is running, and the unit is cooling properly, the compressor run time is fine in the unit.

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Brian for Model Number GS6NBEXRA02

The refrigerator slowly increases in temperature. If I umplug the refrigerator control, the system seems to reboot when plugged back in and runs normally for a month or so, then back to short cycling and warming temperatures. The wiring diagram doesn't show any safety controls, so I'm assuming a problem with the main controller. I don't want to replace a good part, so I was hoping someone else has solved this problem already and could provide guidence. What is causing the machine to lose temperature accuracy, yet allows a reboot to proper operation?

1 Answer

Brian, You most likely have an issue wih the control board WPW10135091. But you do want to test the thermisotr resistance at the main control board WPW10135091 (located in the back of the fridge in the compressor compartment)It should have a resistance reading of 2800 ohms resistance ay room temp. (77 dgrs F,) on the P2 connector pin 1 (orng) across pin 6 (orng/blk). Check and make sure there are no loose connections, or moisture on the thermisotr connector.

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1 Answer

Hello Jim. Based on the information you provided, the freezer is to cold for proper ice production. You will need to get the freezer to 0° for the icemaker to work properly. Check and make sure the water lines in the unit and the fill tube is not frozen due to the temperature in the freezer.

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1 Answer

Hello Phil. The compressor shuts off when the desired temperature is reached inside the unit. You can try turning the temperature down slowly and see if it shuts off before you reach the off position. If so, then the thermistor should be good. If not, and the unit is the proper temperature, you will need to test the thermistor WP2188820. Thermistor Temperature Resistance 77°F..................10,000 ohms 36°F..................29,500 ohms 0°F....................86,300 ohms If the thermisot is good, you will need to replace the control board 8201735. As for the clicking, it sounds like the compressor may be going bad on the unit. It seems the unit is building up pressure and is not equalizing properly. If the unit continues to try to start and then finally does, you will need to replace the compressor W10309988. You can test this with a multi-meter TJMA-DMT3. Here is a link on how to use a multi-meter. Hope this helps. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html

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1 Answer

Hello Steve. Check and make sure the flapper in the dispenser assembly is not broke. If it is closing good, you will need to look for a bad door seal 2159082. It sounds like the unit is drawing in warm air from the room. Once the problem is repaired, you will need to thaw out all the ice in the freezer and on the freezer walls. Hope this helps.

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1 Answer

Hi Kevin. It is the same part #WP2188819. Normal Temperatures are 0-degrees in the freezer, 37-47 degrees in the fresh food. Thank you.

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