Defrost Thermostat, Sensor
Genuine Ge part
By: Ge
Part Number: WR50X55
Freezer icing up or fridge not cooling? The defrost thermostat regulates defrost cycles. DIYers report straightforward replacement in under an hour.
This part fixes the following symptoms
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Freezer not defrosting
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Freezer section too warm
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Fridge too warm
See more...
Do-It-Yourself Stories from Customers like You
Freezer iced up behind panel refrigerator not cooling Lisa S. • Camanche , IA • October 08, 2016
Ordered a ge thermostat part . Took everything out of freezer , unscrewed panel and took the plate out. Used a hair dryer to defrost ice. Took out old part and installed new part. Everything is working just fine!!! Used a meter to test old/bad part and indeed it was dead.
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$15.95
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$30.42
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$14.47
Genuine Frigidaire part
By: Frigidaire
Part Number: 5303918568
Frost buildup or no defrosting? This defrost thermostat monitors evaporator coil temperature to trigger defrost cycles. DIY-friendly repair, 30-45 minutes.
Do-It-Yourself Stories from Customers like You
Not defrosting William M. • Richland , WA • March 08, 2018
Replaced thermostat and heater.
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$80.26
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$95.51
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$15.25
Genuine Whirlpool part
By: Whirlpool
Part Number: WP1-81801-001
Fix ice buildup and cooling issues with a new defrost thermostat. This bi-metal switch monitors evaporator temperature to prevent frost accumulation.
Do-It-Yourself Stories from Customers like You
Unit had lots if ice buildup and food on top shelves was thawed found broken fan blade replaced fan blade and defrost tstat fir good measure Michael J. • Andale , KS • June 12, 2026
Replaced broken fan blade
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$60.52
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$72.62
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$12.10
Genuine Whirlpool part
By: Whirlpool
Part Number: WP67006387
Fix frost buildup and warm temps with a new defrost thermostat. Monitors evaporator coil temperature to prevent ice accumulation. DIY-friendly repair.
Do-It-Yourself Stories from Customers like You
Ice making and temp control Calvin G. • Portland , TN • October 14, 2019
Replaced defrost thermostat, replaced frig thermistor. Good experience. Excellent support and assistance for Maytag.
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$69.95
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$83.94
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$13.99
Genuine Ge part
By: Ge
Part Number: WR23X10582
This temperature sensor monitors internal refrigerator temperatures and relays them to the control, helping the unit maintain consistent cooling. Replacing a failed sensor restores accurate temperature regulation and more reliable operation. What it does:
- Measures compartment or evaporator temperature and sends a resistance signal to the control board
- Helps the control modulate compressor and fan run times for proper cooling
- Typical failure signs: sections too warm or too cold, erratic temperatures, or running longer than normal
- Causes inaccurate temperature readings compared to setpoints
What's included:
- 1 temperature sensor assembly
Install notes:
- Disconnect power before servicing
- Access the sensor in the affected section; release any cover/clip and unplug the connector
- Route the new sensor's wiring like the original and ensure it's fully seated in its holder or clip
- Restore power and allow up to 24 hours for temperatures to stabilize
Do-It-Yourself Stories from Customers like You
Frozen coil and ice in bottom of upper compartment been a recurring problem since unit was 2 years old David W. • New Franklin , OH • January 24, 2016
I've cleaned the drain tube numerous times. Always freezes and plugs. Added a defrost tab down into drain tube, missing from factory. This time defrost heater bad. Replaced heater, bi-metal switch and temp sensor.
Great service and next day receipt of parts. Thanks !
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$78.78
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$93.75
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$14.97
Genuine Lg part
By: Lg
Part Number: EBG32952202
THERMISTOR ASSEMBLY,PTC
Do-It-Yourself Stories from Customers like You
Lg refrigerator wound not start Steve S. • Peoria , AZ • May 28, 2016
For an emergency fix I installed a 3 in1 kit disabling the original start cap and wiring in the original run cap to the run winding.
Ordered the proper PTC and overload from Appliance Parts Pros and installed them 2 weeks later.
The original start and run capacitor were good, rewired back to design specs.
The original PTC had pins 1,2 and 3, the replacement had 2,3 and 4.
Only wiring change was to install the red wire from pin 1 on the original PTC to pin 4 on the new PTC.
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$37.95
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$44.78
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$6.83
Genuine Samsung part
By: Samsung
Part Number: DA32-10105G
This is a thermistor-style temperature sensor that monitors the internal temperature inside the refrigerator compartment and sends readings to the main control board. The control board uses this data to regulate the compressor and cooling cycles to maintain proper temperatures. Replace this sensor if the refrigerator is running too warm, too cold, not cycling correctly, or displaying temperature-related error codes.
Do-It-Yourself Stories from Customers like You
R3 refrigerator defrost sensor error Marvin D. • Dover , FL • August 11, 2015
Using service manual, obtained from this site, I verified with meter that this was the error. I ordered the defrost sensor. The part arrived the next day. Most of the time to repair was unloading, cleaning, and reloading the refrigerator.
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$43.59
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$52.31
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$8.72
Genuine Frigidaire part
By: Frigidaire
Part Number: 5303918638
Freezer coils icing up or not defrosting properly? This defrost thermostat monitors evaporator temperature to control defrost cycles. Moderate DIY repair.
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$85.76
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$102.05
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$16.29
Genuine Ge part
By: Ge
Part Number: WR23X23626
This heater harness installs in the refrigerator's fresh food section. It provides defrost heat and the correct wiring connections to clear frost from the fresh food evaporator, restoring airflow so the compartment cools evenly and reliably.
- Delivers defrost heat to the fresh food evaporator to melt frost and ice
- Includes the correct harness/wiring for a precise, plug-in connection
- Helps restore proper airflow and temperature regulation in the refrigerator compartment
- Symptoms include heavy frost on the fresh food evaporator cover or back wall
- Also presents as a warm fridge (with normal freezer) or fan noise from ice contact
What's included: 1 fresh food heater harness assembly. Install notes:
- Disconnect power before servicing; use cut-resistant gloves
- Access is behind the fresh food evaporator cover; protect delicate fins and sensors
- Route the harness exactly as the original and fully seat all connectors/clips
- After reassembly, ensure the drain path is clear and the fan spins freely
Do-It-Yourself Stories from Customers like You
Fresh food evaporator was freezing and ice maker motor was stuck in my ge refrigerator Joseph L. • Temple , TX • August 04, 2026
I replaced the evaporator fan after using a steam gun to defrost the evaporator and ensuring the drain wasn't clogged. After assembling, I noticed the refrigerator wasn't performing a defrost cycle. After testing the heater, I determined the main board relay was malfunctioning and not supplying the voltage to the heater. After correcting this, the ice maker wasn't making ice still and after troubleshooting it, I determined the dc motor was stuck. I replaced the ice maker and the...
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$49.34
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$59.21
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$9.87
Genuine Ge part
By: Ge
Part Number: WR50X60
Refrigerator not cooling or freezer has frost buildup? This defrost thermostat controls defrost cycles. Common DIY fix, typically takes 1 hour.
Do-It-Yourself Stories from Customers like You
The refrig was too warm Michael F. • Belvidere , IL • September 02, 2016
When I looked on the Appliance Parts Pro website it said the usual fix for a refrig that is not cooling is to replace the defrost thermostat in the freezer. I didn't see how that would keep the refrig from cooling but I figured I would try it.
Got the part yesterday ( two days shipping which was great!). I took the panel off the back of the freezer and the coils were all covered in solid ice! it took me an hour with a heat gun to melt the ice.
I changed the defrost thermostat and now the...
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$11.70
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$30.42
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$18.72
Genuine Ge part
By: Ge
Part Number: WR23X10745
Fix frost buildup in your freezer with this defrost heater harness and thermostat. Restores proper defrost cycling to prevent ice accumulation.
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$33.43
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$39.78
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$6.35
Genuine Ge part
By: Ge
Part Number: WR50X133
Fix frost buildup and warm fresh food section with this clip-on defrost thermostat. Restores automatic defrost cycles. Moderate DIY repair.
Do-It-Yourself Stories from Customers like You
Top getting warm. Adam L. • Almond , WI • December 24, 2019
I bought a thermostat and defrost timer.
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$65.74
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$78.89
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$13.15
Genuine Ge part
By: Ge
Part Number: WR50X134
Freezer cold but fridge warm? Excessive frost buildup? Your defrost thermostat may have failed. This sensor controls the defrost cycle timing. Easy DIY fix.
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$46.67
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$55.54
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$8.87
Genuine Whirlpool part
By: Whirlpool
Part Number: WP2306462
Fixes ice buildup in freezer and reduced cooling. This bi-metal defrost thermostat monitors evaporator temperature. DIY-friendly repair, about 20 minutes.
Do-It-Yourself Stories from Customers like You
The freezer was working fine the fridge was not getting cold. David B. • Woodmere , NY • December 05, 2022
I replaced the Defrost Thermostat.
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$78.78
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$93.75
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$14.97
Genuine Samsung part
By: Samsung
Part Number: DA32-10105S
Fix incorrect temperature readings or food freezing in your fridge. This temperature sensor monitors cooling accurately. DIY repair in under 30 minutes.
Do-It-Yourself Stories from Customers like You
The refrigerator section was freezing food Andrew B. • Rolling Prairie , IN • January 08, 2016
After reading stories on this website I decided the problem was probably the control board. I ordered the sensors also just in case. The display has been dim for awhile so I got that also. I replaced the board and the display in less than an hour. It is working perfectly now so I never installed the sensors. I believe the board was ruined by a recent power outage. The power flickered several times before it went out, I don't think the board could handle the fluctuations.
This will be my go to...
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$41.41
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$49.28
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$7.87
Genuine Whirlpool part
By: Whirlpool
Part Number: WP61005254
Fix ice buildup in freezer and warm fridge temps. This defrost thermostat monitors evaporator temperature to control defrost cycles. DIY-friendly repair.
This part fixes the following symptoms
-
Freezer section too warm
-
Fridge too warm
See more...
Do-It-Yourself Stories from Customers like You
Ice build up in top freezer of refrigerator Kevin S. • Mission Viejo , CA • May 13, 2015
After watching numerous videos I was able to discern that the problem was with one of the following: the timer, the heater, or the thermostat. a short time check showed me that the timer was working so that narrowed it down to the other two. Not having the necessary tools to check those two I ordered both parts. Once the parts came and I took out the old parts it was quite evident that it was the heater since it had black burn marks on it. I decided to install the thermostat also since it...
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$72.95
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$86.81
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$13.86