Mitsubishi Electric Keypad / Control Panel Failure

Unit powers on but buttons do not respond or respond intermittently.

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

Worn membrane switches, moisture ingress into control panel, loose ribbon cable to main PCB, failed display/control PCB

Safety: Unplug the unit before removing the control panel.

Steps:

Drying: If the panel was exposed to moisture, leave the unit unplugged in a dry place for 24 hours and retry.
Inspect ribbon cable: Remove the control panel and check the flat cable between the panel and main PCB. Reseat both ends.
Check for corrosion: Look for green/white corrosion on the panel PCB. If present, the display/control PCB should be replaced.
Replace keypad: If specific buttons never work, replace the control panel assembly.

Medium 3/5

Control Panel / Display PCB

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