Proline Control Board Key Input Error

Microwave beeps and displays F1; may occur at power-up or when pressing any key.

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 keypad matrix, Faulty control PCB, Damaged keypad ribbon cable, Liquid spill into control panel

Safety first: Unplug the microwave.

User-level steps:

Allow the control panel to dry if there has been any spill or heavy steam exposure.
After several hours, plug back in and test.
If F1 persists, the keypad or control board is likely damaged.

Next steps:

Replacement of the membrane keypad or control PCB is required. This should be done by a technician.

Medium 3/5

Main Control PCB

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