The display works, but buttons do not respond or respond intermittently.

Safety: Unplug the unit before removing the control panel.

Steps to fix unresponsive buttons:

• Dry the panel: Wipe off any moisture on the control surface. Allow the unit to sit unplugged to dry if condensation is suspected.
• Inspect ribbon cable: Remove the control panel and reseat the ribbon cable or connector between the keypad and main board.
• Check for damage: Look for cracks or wear on the keypad overlay. Replace the control panel or keypad assembly if damaged.
• Replace display board: If wiring is good but buttons still do not respond, replace the display/control board.