Ariston
Overheating of Electronics or Backplate
Thermostat or its backplate feels unusually hot to the touch during normal operation.
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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
Thermostat installed on warm chimney or hot pipe chase, Overloaded internal relay, Poor ventilation behind thermostat, Internal component failure
How to Fix / Troubleshooting
Safety: Turn off power before removing the thermostat from the wall.
- Check mounting surface: Ensure the thermostat is not mounted on a hot surface (e.g. flue, hot water pipe). If it is, relocate it.
- Assess load: Confirm that the connected load does not exceed the thermostat’s rated current. Use an external relay for high loads.
- Inspect for damage: Remove the thermostat and look for discoloration or burnt smell. If present, do not reuse; replace the unit.
- Improve airflow: Avoid sealing the back of the thermostat with insulation or caulk that traps heat.
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Repair Difficulty
Medium
3/5
Required Part
Ariston Smart Thermostat (Complete Unit)
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