Freezer display works but buttons do not respond or respond intermittently.

Safety first: Unplug the freezer before removing the control panel.

Step-by-step checks:

• 1. Lock function: Ensure the control lock (child lock) is not activated. Deactivate according to the user manual.
• 2. Inspect panel: Remove the control panel and check the keypad ribbon cable for secure connection and damage.
• 3. Dry moisture: If condensation is present, dry the area thoroughly and reassemble.
• 4. Replace interface: If specific buttons remain non-functional, replace the user interface PCB or keypad assembly.