Drayton
Moisture Ingress into Thermostat
Condensation or visible moisture inside thermostat display or housing.
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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 in bathroom or damp area, No vapour barrier on external wall, Water leak from pipe behind thermostat, Poorly sealed cable entry
How to Fix / Troubleshooting
Safety first: Isolate mains before removing a wired thermostat. Do not operate a wet electrical device.
- Power off and dry: Turn off power and remove the thermostat from the wall. Allow it to dry in a warm, dry environment for at least 24 hours.
- Investigate moisture source: Check for leaks from pipes or roofs near the thermostat location. Repair any leaks before reinstalling.
- Improve sealing: Seal large cable entry holes and consider fitting a vapour barrier behind the thermostat on external walls.
- Relocate if necessary: Do not install thermostats in bathrooms or areas with high humidity unless specifically rated for such use.
- Replace if corroded: If corrosion is visible on the PCB or terminals, replace the thermostat.
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Repair Difficulty
Medium
3/5
Required Part
Thermostat Housing / PCB
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