Condensation or visible moisture appears inside the thermostat or on the control module.

Safety: Moisture and electricity are hazardous. Turn off power to the control module and boiler before touching any damp equipment.

• Dry the area: Allow the thermostat or control module to dry naturally; do not use direct heat sources.
• Check for leaks: Inspect for plumbing leaks, roof leaks, or condensation on pipes near the device.
• Improve placement: If on an external wall, consider relocating the thermostat to an internal wall or adding insulation behind it.
• Seal cable entries: For the control module, ensure grommets and cable glands are properly fitted to reduce moisture ingress.

If corrosion or repeated moisture is observed, replace the affected Ngenic device and correct the underlying moisture problem.