Thermostat humidity reading is clearly wrong or does not change

Safety first: Turn off power before removing the thermostat if you will access internal components.

• Step 1 – Compare with hygrometer: Place a known good hygrometer near the thermostat and compare readings over 30 minutes.
• Step 2 – Clean sensor area: Gently clean the thermostat vents with a soft brush or compressed air to remove dust that may affect the sensor.
• Step 3 – Adjust calibration: If your iComfort model allows, apply a humidity offset in the settings to match the reference hygrometer.
• Step 4 – Avoid contaminants: Ensure the thermostat is not located near kitchens, bathrooms, or chemical storage that can affect sensor coatings.
• Step 5 – Replace sensor module: If readings remain inaccurate, replace the humidity sensor module or the thermostat display assembly.