E13
Heatmiser
Touch Panel / Keypad Communication Fault
Thermostat shows E13 and backlight or touch keys are unresponsive
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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
Loose ribbon cable between PCB and touch panel, Cracked front glass or touch layer, Liquid ingress on front panel, Failed touch controller IC
How to Fix / Troubleshooting
Safety first: Isolate power before removing the thermostat from the wall. Opening the front panel beyond normal removal may void warranty.
Steps:
- Remove the thermostat from the wall plate and gently clean the front surface with a dry, lint-free cloth to remove moisture or contamination.
- Check for visible cracks or damage to the glass or plastic touch surface.
- If you are qualified and the design allows, carefully check that any ribbon cable between the front panel and PCB is fully seated.
- If the panel remains unresponsive and E13 persists, the front assembly or main PCB is defective. Replace the thermostat.
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Repair Difficulty
Hard
4/5
Required Part
Heatmiser Smart Thermostat Front Panel Assembly
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