Heatrae Sadia
Keypad / Touch Control Failure
Heatrae Sadia digital water heater display works but buttons do not respond or respond intermittently.
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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
Worn keypad, Moisture behind front panel, Loose ribbon cable, Faulty user interface PCB
How to Fix / Troubleshooting
Safety first: Isolate power before removing the front cover or display panel.
Steps to restore control:
- 1. Dry and clean: Check for condensation or water behind the front panel. Dry thoroughly and address any leaks.
- 2. Reseat connectors: Disconnect and reconnect the keypad ribbon cable or plug at both ends.
- 3. Inspect keypad: Look for physical damage or wear on the buttons. If the membrane is cracked or worn, replace the user interface assembly.
- 4. Test after replacement: Reassemble and restore power. If the issue persists, the main PCB may not be processing inputs correctly and may need replacement.
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Repair Difficulty
Medium
3/5
Required Part
User Interface / Keypad Assembly
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