Error code reference

Whirlpool Dishwasher Error Code F1

NTC (Negative Temperature Co-efficient of Resistance) device fault

Whirlpool codes Whirlpool dishwasher codes

NTC (Negative Temperature Co-efficient of Resistance) device fault - temperature is outside normal range (-3°C to +85°C), over +85°C in wash chamber, or the device is open circuit or short circuit.

First step from the service manual

Check NTC resistance values against specifications at various temperatures; check for open or short circuit.

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

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Step-by-step tests with expected resistance, voltage, and continuity values
Wiring diagram references and connector pinouts from the OEM service manual
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F1 on my Whirlpool WDT730PAHZ

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NTC (Negative Temperature Co-efficient of

From Tech Sheet W12673779, p.31:

1.Check NTC resistance values against specifications at various temperatures; check for open or short circuit.

2.Disconnect the sensor and measure resistance at the sensor body. Expected: 10 kΩ to 12 kΩ at 77°F (25°C).

3.Check the sensor harness for opens and shorts. Back-probe the sensor pins at the control board connector; a reading outside 5 kΩ to 50 kΩ indicates a failed sensor.

Part WP8577274

Temperature thermistor

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First step from the service manual

Get the full diagnostic procedure for F1.

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