Ariston
Keypad / Touch Panel Malfunction
Ariston water heater's digital display works, but buttons do not respond or respond intermittently.
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Possible Causes
Worn membrane keypad, Moisture behind control panel, Loose ribbon cable, Damaged UI PCB
How to Fix / Troubleshooting
Safety first: Disconnect power before removing the front panel.
- Dry and clean: Check for condensation or water ingress. Dry thoroughly.
- Reseat ribbon cable: Disconnect and reconnect the keypad ribbon cable to the UI board.
- Replace keypad or UI board: If specific buttons never work, replace the keypad membrane or entire UI PCB with Ariston-compatible parts.
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Repair Difficulty
Easy
2/5
Required Part
User Interface / Keypad Assembly
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