C280 error, appliance reports internal sensor mismatch or calibration error

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.

Possible Causes

Temperature sensors reading inconsistent values, Faulty calibration data in memory, Damaged sensor wiring, Main board ADC failure

Safety first: Disconnect from mains before extended troubleshooting.

1. Power reset: Unplug for 10 minutes, reconnect, and test with a simple heating program using water.
2. Avoid extreme conditions: Ensure the appliance is used within the ambient temperature range specified in the manual.
3. No user calibration: Internal sensor calibration typically cannot be adjusted by the user.
4. Service: A technician can test the temperature sensors, overheat sensor, and main control board and reload calibration data if supported.

Professional Required 5/5

Temperature sensor array

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