This module is designed for sequencing the humidification process. While humidifying, the humidification device modulates based on the humidity and the humidity setpoint. This state machine has a limited humidification state for the case where too much moisture is added to the discharge air. This module monitors the status of the zone or return air humidity, discharge air humidity, and setpoints to determine the current humidification control state.
For information on how the FSM determines the state, see FSM (Humidification Sequencing).