Heat Siphon
Keypad / User Interface Failure
Display is on but unresponsive; buttons do not change settings or start the unit.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Failed membrane keypad, Loose ribbon cable to control board, Control board keypad interface failure
How to Fix / Troubleshooting
Safety first: Turn off power before removing the front control panel.
- Inspect keypad: Check for moisture intrusion, cracks, or physical damage to the keypad overlay.
- Check ribbon cable: Carefully remove the control panel and reseat the keypad ribbon cable on the control board.
- Dry out moisture: If condensation is present, allow the panel to dry completely before reassembly.
- Replace keypad or board: If buttons remain unresponsive, replace the keypad assembly. If that does not resolve the issue, the main control board may need replacement.
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Repair Difficulty
Medium
3/5
Required Part
Keypad / Display Assembly
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