Whirlpool Refrigerator Sensor & Thermistor Parts

Whirlpool Refrigerator Temperature Sensor & Thermistor Parts

Whirlpool refrigerators rely on thermistor sensors to monitor compartment temperature and signal the control board to run the compressor and defrost cycle. When a thermistor fails or reads incorrectly, you'll notice temperature swings — the fridge runs too cold and freezes food, or it's not cold enough and everything thaws. A bad sensor is one of the quickest fixes on a Whirlpool fridge, often saving hundreds versus a compressor replacement.

Whirlpool uses thermistors in both the fresh food and freezer sections. Some models have a single sensor; others have two. Symptoms of sensor failure include: compressor running constantly, food freezing unexpectedly, ice buildup on evaporator coils, or the fridge warming up gradually. Enter your model number below to find the exact OEM thermistor for your Whirlpool refrigerator.

• Compressor runs constantly: sensor reading cold when compartment is actually warm
• Food freezes in fresh food section: sensor reading too cold; compressor won't stop
• Fridge gradually warms up: sensor reading warm when it's actually cool; compressor barely runs
• Ice buildup on back wall: defrost cycle won't trigger; frozen sensor input
• Control board error codes: thermistor open circuit or short detected

Whirlpool Refrigerator Thermistor & Sensor FAQs

How do I know if my Whirlpool refrigerator thermistor is bad?

The most common sign is temperature cycling — your fridge either runs too cold and freezes vegetables, or gradually warms up and doesn't keep food cold enough. You may also see frost buildup on the back wall if the defrost cycle isn't triggering. If the control board is displaying an error code (often F or E followed by a number), the thermistor circuit may be open or shorted. A multimeter test on the sensor shows resistance change as temperature changes; if resistance stays constant regardless of temperature, it's failed.

Can I replace a Whirlpool refrigerator thermistor myself?

Yes. Thermistor replacement is one of the simplest refrigerator repairs. The sensor is usually clipped or glued into a well on the evaporator coil or air duct. You'll unplug the fridge, locate the sensor (consult your model's diagram), disconnect the wire connector, and swap in the OEM replacement. The whole job typically takes 10 to 15 minutes. No special tools required — just make sure you have the exact model number to order the correct thermistor, as Whirlpool uses different sensors across its product lines.

Where is the thermistor located in a Whirlpool refrigerator?

Location varies by model. On many Whirlpool French door and side-by-side refrigerators, the freezer thermistor is mounted on the evaporator coil assembly in the freezer section (rear wall or side wall). The fresh food thermistor is usually in a duct or air return near the damper control. Top-freezer models often have the sensor in the freezer directly on the coil. Consult your service manual or parts diagram for your specific model — enter your model number on the product page to see a diagram showing exactly where the sensor sits and how to access it.

What's the difference between a thermistor and a temperature sensor?

In Whirlpool refrigerators, the terms are used interchangeably — both refer to the thermistor, a temperature-sensitive resistor that changes resistance as temperature changes. The control board reads this resistance change and adjusts compressor and defrost cycles accordingly. Some Whirlpool manuals call it a thermistor, others call it a thermal sensor or temperature sensor. When ordering, use the part number from your model's parts list to ensure you're getting the right part — part numbers don't lie, names sometimes do.

Order Whirlpool Refrigerator Sensor Thermistor Replacement Online

Keep your Whirlpool refrigerator running efficiently by replacing a faulty sensor thermistor promptly. With same-day shipping on most in-stock items, you'll have your replacement part fast, minimizing downtime. Our model/part number lookup finds the exact OEM part for your unit, and every order is backed by our 365-day return policy and price-match guarantee. If your Whirlpool refrigerator sensor thermistor is failing — showing symptoms like reduced performance, unusual noise, or complete non-operation — replacement is typically the fastest fix. Browse our full library of Whirlpool repair resources for troubleshooting guides and installation videos.

Whirlpool Refrigerator Model Number: Where to Look

Whirlpool typically places the model number on a label inside the fresh food compartment, often along the side wall, behind the crisper drawer, or on the ceiling near the door hinge. Check these spots with the door open, and copy the complete model number, including letters and numbers. It identifies your entire refrigerator, so you can use it across the full catalog rather than matching a sensor by appearance alone. Type it into our model number lookup and the catalog narrows to parts made for your unit. You will get a model-specific parts list faster, with less risk of ordering a part that does not fit.