F23
Kenmore
Heater Temperature Sensor (NTC) Error
Washer displays F23 and may not heat water; cycle may end prematurely.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Open or shorted NTC sensor, loose NTC wiring, failed main control reading sensor
How to Fix / Troubleshooting
Safety First: Unplug the washer before accessing the rear panel and heater area.
Steps:
- Access NTC: Remove the rear panel. Locate the heater element at the bottom of the tub; the NTC sensor is usually clipped into the heater bracket or nearby.
- Inspect wiring: Check the NTC connector and harness for damage or loose fit. Reseat the connector.
- Test NTC: Disconnect the sensor and measure resistance with a multimeter. At room temperature, it should typically read 10–20 kΩ (consult your model's specs). If it reads open (infinite) or near 0 Ω, replace the NTC sensor.
- Check control: If the NTC tests good and wiring is intact, the main control may be misreading the sensor and may need replacement.
After repair: Run a hot wash and confirm the washer heats and F23 does not reappear.
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Repair Difficulty
Medium
3/5
Required Part
NTC Temperature Sensor
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