Refrigerator Temperature Sensor / Thermistor (GE OEM)

Description

Genuine GE OEM Refrigerator Temperature Sensor / Thermistor – Part WR55X10025

Part Number: WR55X10025

Replaces: AP3672963, PS366477

Always verify compatibility using your appliance model number before ordering.

GE Refrigerator Temperature Sensor / Thermistor (WR55X10025)

Restore precise climate control and food preservation to your appliance with this Genuine OEM Refrigerator Temperature Sensor. This specialized electronic thermistor (Part # WR55X10025) monitors internal cabinet conditions, continuously registering resistance changes tied to temperature levels. It feeds this real-time data back to the main electronic control board so the computer knows exactly when to kick on the compressor, spin the evaporator fans, or activate a defrost cycle.

Because this part is an official multi-use sensor line for GE platforms, it can be located in several distinct areas of your unit—acting as the fresh food cabin sensor, the freezer cabin sensor, or the defrost evaporator coil sensor. If the sensor fails, it loses its calibrated resistance curve. This causes severe symptoms like a refrigerator section that freezes your food, a freezer that is warming up and thawing ice, or an evaporator coil that chokes in ice because the system doesn’t know it needs to defrost.

Quick Info:

• Compatibility: Precision-engineered for GE (General Electric), Hotpoint, Haier, Monogram, and Café side-by-side, French-door, and top-freezer refrigerators.

• Fixes Common Issues: Resolves fluctuating cabin temperatures, over-freezing in the fresh food compartment, rapid frost build-up on the back wall, and specific sensor fault error codes.

• Specifications: High-accuracy thermal resistor calibrated to read approximately $5\text{k }\Omega$ ($5,000\text{ ohms}$) at a standard room temperature of $77^\circ\text{F}$ ($25^\circ\text{C}$).

• Difficulty: Intermediate. Involves cutting the old sensor wires and splicing the new thermistor directly into the original factory wire harness.

Pro Tip: When diagnosing this part with a digital multimeter, check its resistance by placing the sensor in a glass filled with crushed ice and a tiny bit of water to simulate a freezing baseline. At a true $32^\circ\text{F}$ ($0^\circ\text{C}$), a healthy GE thermistor should read right around $16.3\text{k }\Omega$. If your meter reads zero resistance (a short circuit), infinite resistance (an open loop), or a fixed value that doesn’t change when exposed to ice, the sensor is defective and must be swapped.

Installation & Safety Steps:

1. Power Isolation: You must completely unplug the refrigerator or shut off the main house circuit breaker to prevent high-voltage arcing while working on the signal wires.

2. Locate the Sensor: Pop off the small slotted plastic grille cage covering the sensor on the interior plastic cabinet liner, or remove the freezer back wall to access the coil-mounted defrost sensor.

3. Snip and Strip: Cut the two wires leading to the old thermistor capsule. Strip away roughly a quarter-inch of plastic insulation from the remaining wire harness.

4. Splice and Seal: Attach the new sensor wires using outdoor-grade crimp connectors or silicone-filled watertight wire nuts. Because the inside of a refrigerator is a high-moisture environment, standard electrical tape will unravel—always use moisture-resistant sealed splices to protect the electronic signal lines.

Are you installing this sensor inside the fresh food cabinet to fix a freezing issue, or are you mounting it to the evaporator coils to clear up a defrost failure?