Buttons on the digital control panel do not respond or respond intermittently.

Safety warning: Unplug the freezer before working on the control panel.

Steps to restore button function:

• Check for control lock: Verify that a control lock feature is not enabled. Refer to the user manual for unlock procedure.
• Inspect panel for moisture: Remove the control panel and look for condensation or spills. Dry thoroughly with a soft cloth and allow time to air dry.
• Reseat ribbon cable: Disconnect and reconnect the ribbon cable or harness between the keypad and main board to ensure good contact.
• Replace keypad/UI board: If specific buttons never respond or the membrane is damaged, install a Summit-compatible user interface or keypad assembly.