Carrier HH18HA147 Limit Switch

The Carrier HH18HA147 is a Limit Switch for HVAC equipment most notably furnaces or air handlers. A switch that results in certain actions whenever certain conditions exist within the system. Its function depends on the position of this component in the furnace or air handler. It may reduce power stages, and stop the current flow depending on specific parameters. For instance, it could turn off the system if airflow is not felt or restrict the work of the burner during high temperatures. The limit of the switch in the Carrier HVAC system is to control several functions in the system and ensure safe operation.