Rinnai
Control Panel / User Interface Fault
Boiler display is on but unresponsive; buttons do not work or respond erratically.
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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
Faulty display PCB, Damaged keypad, Loose ribbon cable between display and main PCB, Moisture ingress into control panel
How to Fix / Troubleshooting
Safety first: Isolate power before removing the front panel or display module.
- Power cycle: Turn off power for 30 seconds and then restore to see if the control panel resets.
- Inspect connections: Remove the front cover and check the ribbon cable or harness between the display and main PCB for secure seating and damage.
- Check for moisture: Look for condensation or water around the display. Dry thoroughly and address any leaks.
- Panel replacement: If the display remains unresponsive, the user interface PCB may need replacement by a technician.
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Repair Difficulty
Medium
3/5
Required Part
Display / User Interface PCB
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