Carrier HH12ZB180 Limit Switch If you notice the furnace

If you notice the furnace is short-cycling or the blower fan runs continuously while the burner remains off

Service Lifecycle: Tested for up to 100

Universal Compatibility: Reliable for use with all common refrigerants including R410A

reducing the risk of leaks in high-vibration mechanical environments

A swivel ball joint is necessary when the actuator and damper shaft are not perfectly aligned

Carrier HH12ZB180 Limit Switch If you notice the furnaceThe Carrier HH12ZB180 Limit Switch is a critical OEM furnace safety control designed to protect the heat exchanger and burner assembly in Carrier, Bryant, and Payne gas furnaces. This 3 inch insert limit switch features an automatic reset mechanism and is calibrated for a fixed 180 degree Fahrenheit opening temperature with a 40 degree differential (L180 40). High limit switches are standard components in forced air systems, functioning as a normally