E11
Classeq
Tank Temperature Probe (NTC) Fault
Display shows E11; machine may run but indicates a tank temperature sensor fault.
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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 tank NTC sensor, Damaged sensor wiring, Poor connection at control PCB, Sensor out of calibration
How to Fix / Troubleshooting
Safety first: Isolate the dishwasher from the mains before accessing internal components.
- Locate tank NTC: Find the tank temperature probe (NTC) screwed into the wash tank wall or mounted in a pocket.
- Inspect and clean: Check for heavy scale or grease on the sensor tip. Clean gently with a non‑abrasive pad.
- Electrical test: Disconnect the sensor plug and measure resistance at room temperature. Compare with Classeq specifications (commonly in the kΩ range). A reading of near 0 Ω (short) or infinite (open) indicates a failed sensor.
- Check wiring and connectors: Inspect the cable from the NTC to the control PCB for cuts, burns, or loose connectors. Repair or replace as needed.
- Replace sensor if faulty: Fit a new Classeq‑approved NTC sensor, ensuring a watertight seal. Refill and test heating operation.
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Repair Difficulty
Medium
3/5
Required Part
Tank NTC Temperature Probe
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