Safety: Unplug the unit before removing the control panel.

Clean surface: Wipe the touch panel with a dry, soft cloth to remove moisture or residue.
Power reset: Disconnect power for 5 minutes, then reconnect and test the buttons.
Access panel: Remove the bezel or trim to access the touch PCB and ribbon cable.
Reseat cable: Disconnect and reconnect the ribbon cable between the touch panel and main PCB.
Inspect PCB: Look for cracks or burn marks. Replace the touch control PCB if damaged or still unresponsive.

Display is on but buttons do not respond or respond intermittently.

Possible Causes