Washer-dryer stops with F09, may have erratic behavior or not start correctly.

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.

Possible Causes

Corrupted EEPROM on control board, power surge damage, incorrect or failed software configuration, loose control board connectors

How to Fix / Troubleshooting

Safety first: Unplug the unit for at least 10 minutes.

Reset and inspect:

Power reset: After 10–15 minutes, reconnect and attempt to start a simple rinse/spin program.
Check connectors: Remove the top cover and inspect the main control board connectors. Reseat all multi-pin plugs firmly.

Service action: If F09 persists, the control board firmware or EEPROM is likely corrupted. This typically requires replacement or reprogramming of the control board by an authorized Bauknecht service center.

Repair Difficulty

Professional Required 5/5

Required Part

Main Control Board (Power Module)

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