Heating, ventilating and air conditioning (HVAC) sensor device

A method comprising:

• receiving from a heating, ventilating and air conditioning (HVAC) controller, at a control signal input of an HVAC sensor device, of a control signal for controlling an HVAC actuator;
• receiving, by an electronic circuit of the HVAC sensor device, of a sensor signal indicative of condensation and/or indicative of relative humidity in the HVAC system;
• comparing the sensor signal indicative of condensation with a defined condensation range and/or the sensor signal indicative of relative humidity with a defined relative humidity range;
• passing through the control signal received at the control signal input to a control signal output in response to if the sensor signal indicative of condensation being within the defined condensation range and/or the sensor signal indicative of relative humidity is being within the defined relative humidity range;
• and
• overwriting the control signal received at the control signal input with a control reference value and outputting the overwritten control signal at the control signal output in response to the sensor signal indicative of condensation being outside the defined condensation range and/or the sensor signal indicative of relative humidity being outside the defined relative humidity range,
• wherein the control reference value, when received by the HVAC actuator, causes the HVAC actuator to move an actuated part to a safety position which reduces and/or prevents formation of condensation, and
• wherein the control reference value is within a value range of the control signal.