Medisana Keypad or Control Panel Failure

Humidifier display or buttons do not respond correctly; random changes in settings.

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

Moisture ingress into control panel, Worn or stuck membrane buttons, Loose ribbon cable to main PCB, Faulty display/control PCB

Safety: Unplug the humidifier before opening the control panel.

Dry out panel: If the panel has been exposed to water, allow it to dry completely for 24 hours in a warm, dry place.
Clean around buttons: Wipe the panel surface with a slightly damp cloth and mild detergent, then dry.
Check ribbon cable: Open the housing and reseat the ribbon cable between the control panel and main PCB.
Replace control PCB: If buttons still misbehave or do not respond, replace the control/display PCB with a Medisana-compatible part.

Medium 3/5

Control Panel PCB

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