F23
Amana
Heater or Temperature Sensor Fault (Washer Section)
Washer-dryer combo stops and displays F23, often with water in the tub.
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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
Failed water temperature sensor (thermistor), Open or shorted heater element (if equipped), Loose wiring to sensor, Faulty main control temperature circuit
How to Fix / Troubleshooting
Safety first: Disconnect power and shut off water before accessing internal components.
- Access sensor: Remove the rear panel to locate the water temperature sensor / thermistor on the tub or heater housing.
- Inspect wiring: Ensure the sensor connector is fully seated and wires are not damaged.
- Test thermistor: Use a multimeter to measure resistance at room temperature and compare to the service manual chart. Replace the thermistor if readings are out of range.
- Check heater (if present): Test the heater element for continuity and for shorts to ground. Replace the heater element if defective.
- Control board: If sensor and heater test good, the main control board may be faulty and require replacement.
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Repair Difficulty
Hard
4/5
Required Part
Water Temperature Sensor (Thermistor)
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