Carrier HH18HA018 Limit Switch

The Carrier HH18HA018 Limit Switch is an essential part of some of the Carrier HVAC equipment. It has a significant contribution to the overall performance of the system. A limit switch is a sensing device that has a lever or a plunger that breaks or makes an electrical circuit when the switch is operated. In HVAC equipment, this movement may be caused by a damper being opened or closed which means that the equipment has assumed a particular position. This causes the switch to send a signal to the control board and the latter controls the operation of the system.