Oso water heater’s digital display works, but buttons or touch controls do not respond.

Safety first: Isolate power before removing the control fascia.

• Check for moisture: Inspect behind the fascia for condensation or leaks. Fix any leak sources and dry thoroughly.
• Inspect ribbon cable: Reseat or replace the cable between the keypad and main PCB if damaged.
• Test limited functions: See if any buttons respond; if none do, the keypad assembly is likely faulty.
• Replace UI module: Install a new Oso user interface module if the keypad is defective.