E12
Candy
Heater Overtemperature / Sensor Calibration Error
Dishwasher displays E12; may be linked to heating or drying performance issues.
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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
Scaled heater causing localized overheating, Faulty NTC giving incorrect readings, Poor water circulation over heater, Control board misinterpreting temperature data
How to Fix / Troubleshooting
Safety first: Disconnect power and allow the dishwasher to cool before inspection.
- Descale the machine: Run a high-temperature cleaning cycle with a descaling agent suitable for dishwashers to remove limescale from the heater and hydraulic system.
- Check spray arms and filters: Ensure good water circulation by cleaning filters and spray arms thoroughly. Poor circulation can cause hot spots on the heater.
- Inspect NTC and heater: Access the sump area and check the NTC sensor and heater connections for corrosion or loose contacts.
- Monitor operation: After cleaning and checks, run a full cycle and see if E12 reappears. If it does, the NTC or heater may need replacement.
- Persistent E12: If replacing the NTC and descaling do not help, the control board may be faulty and should be assessed by a technician.
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Repair Difficulty
Hard
4/5
Required Part
Heater Assembly
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