The F3 error code on a Kenmore dishwasher indicates a fault with the NTC (negative temperature coefficient) thermistor — the component responsible for measuring the wash water temperature. When this sensor reads a value outside its expected range, the dishwasher cannot properly regulate temperature and displays the F3 error.
Causes of the F3 Error
- Open or short circuit in the NTC thermistor
- Thermistor contaminated with scale or detergent buildup
- Wiring fault between thermistor and control board
- Defective control board
Troubleshooting
- Run a descaling cycle if your area has hard water. Scale buildup can affect thermistor readings.
- Reset the dishwasher (unplug for 5 minutes).
- If error persists, call our technicians for NTC sensor testing and replacement.
The F3 error affects the dishwasher’s ability to sanitize dishes properly. Don’t delay — schedule a professional diagnosis to restore proper temperature regulation and hygiene performance.