Protherm
User Interface / Keypad Failure
Thermostat buttons or touchscreen areas 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 mechanical buttons, Contaminated touch surface, Loose front panel connection, Firmware freeze
How to Fix / Troubleshooting
Safety: Disconnect power before removing the front panel.
- Step 1 – Reboot thermostat:
- Power off and on to clear any software freeze.
- Step 2 – Clean surface:
- Wipe the touchscreen or buttons with a soft, dry cloth.
- Do not use aggressive cleaners.
- Step 3 – Check panel connection:
- Remove the front panel and inspect the connector between panel and main board.
- Reseat the connector firmly.
- Step 4 – Test via app:
- If app control works but local controls do not, the UI hardware is likely faulty.
- Step 5 – Replace thermostat front module or unit:
- Depending on model, replace the front user interface module or the entire thermostat.
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Repair Difficulty
Medium
3/5
Required Part
Protherm Thermostat Front Panel / Touch Interface
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