F07
Bauknecht User Interface / Display Board Communication Error

Display shows F07, oven does not start or shuts down, sometimes after a power surge or lightning.

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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

Loss of communication between display board and main control board, Damaged ribbon cable or harness between boards, Faulty user interface (UI) board, Faulty main control board communication circuit

How to Fix / Troubleshooting

Safety first: Turn off the power at the breaker before removing the control panel.

  • Power reset: Disconnect power for 10–15 minutes to reset electronics. Restore power and check if F07 clears.
  • Access control panel: Remove the front control panel by undoing the mounting screws from inside the door frame or top cover. Carefully pull the panel forward.
  • Check ribbon cable: Inspect the flat ribbon cable or harness between the display (UI) board and the main control board. Ensure it is fully seated and not damaged or corroded.
  • Clean contacts: If oxidized, gently clean the ribbon contacts with isopropyl alcohol and reinsert firmly.
  • Board substitution: If the cable is intact and F07 persists, either the UI board or main control board is faulty. In most cases, start by replacing the user interface board. If the issue remains, replace the main control board as well.
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Repair Difficulty

Hard 4/5

Required Part

User Interface (Display) Board
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