Error code reference

Whirlpool Washer Error Code 15

Tub Water Thermistor Invalid

Tub Water Thermistor Invalid - The thermistor is disconnected, not present, or has failed.

First step from the service manual

Run service mode test 8 - Water Level and Temperature Test to verify the water temperature thermistor is in spec.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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