F03
Bauknecht
NTC temperature sensor fault
Washer-dryer stops early in cycle, does not heat water, may show F03.
Advertisements
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.
Advertisements
Possible Causes
Open or shorted NTC sensor on heater housing, loose NTC connector, damaged wiring between NTC and control board, scaled heater causing local overheating and sensor failure
How to Fix / Troubleshooting
Safety first: Disconnect from mains and close water taps.
Check the NTC sensor:
- Locate NTC: Remove the rear panel. The NTC (temperature sensor) is usually clipped into or bolted onto the heater flange on the bottom of the tub.
- Inspect connector: Verify the two‑wire plug is fully seated and free of corrosion. Clean contacts if needed and reseat.
- Measure resistance: With a multimeter, measure resistance across the NTC pins. At room temperature (~20°C), Bauknecht NTCs are typically in the 20–30 kΩ range (check service manual for exact spec). If reading is near 0 Ω (short) or infinite (open), the sensor is faulty.
- Check wiring: Trace the harness from the NTC to the main control board. Look for breaks, crushed sections, or burnt connectors. Repair any damage.
Replace if faulty: If the NTC is out of spec, replace it. Clear the error by unplugging for 5–10 minutes, then run a test wash.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
NTC Temperature Sensor
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements