Dishwasher shows F9 E3 and may stop mid-cycle.

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

Shorted triac on control board, Control electronics failure, Incorrect replacement board, Wiring short to heater

Safety first: Unplug the appliance.

Check for shorts: Inspect heater wiring for insulation damage causing shorts to chassis or other wires.
Board diagnosis: If wiring is good, the control board's heater driver is likely faulty and the board must be replaced.
Use correct part: Ensure the replacement board is the correct Bauknecht part number for your model.

Professional Required 5/5

Main Control Board

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