Worcester Bosch
Moisture ingress
Condensation or moisture visible inside thermostat cover.
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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
Installation in humid room, Draughts carrying moist air through wall, Poorly sealed cable entry, Water leak above thermostat
How to Fix / Troubleshooting
Safety first: If water is dripping onto electrical parts, isolate power to nearby circuits and call a professional.
- Dry the unit: Remove the thermostat from the wall and allow it to dry in a warm, dry room for 24 hours. Do not use direct heat or hairdryers.
- Seal wall penetrations: Seal gaps around the cable entry with appropriate filler to prevent moist air movement.
- Relocate if necessary: Avoid installing thermostats in bathrooms or directly above sinks.
- If corrosion is visible: Replace the thermostat, as long‑term reliability will be compromised.
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Repair Difficulty
Medium
3/5
Required Part
Smart Thermostat Assembly
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