Saunier Duval Keypad / User Interface Failure

Furnace display is on but unresponsive to button presses

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

Stuck or damaged buttons,Moisture ingress into control panel,Faulty display PCB,Loose ribbon cable to main PCB

Safety first: Isolate power before removing the control panel.

Dry panel: If condensation or water has entered the panel, dry it thoroughly and address the source of moisture.
Inspect ribbon cable: Ensure the cable between the display and main PCB is firmly connected and undamaged.
Button test: Press each button individually to feel for mechanical sticking. If buttons are physically damaged, the display board will need replacement.
Replace UI board: Fit a new Saunier Duval user interface board if the existing one is faulty.

Medium 3/5

Display / User Interface Board

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