Carrier HH12ZB180 Limit Switch maintaining the integrity of the

maintaining the integrity of the total heating system while preventing unintended automatic restarts after a safety trip

while designed for Barber Colman and Schneider Electric systems (like the AM-111 crank arm)

failures are often caused by restricted airflow

Repeated tripping is often indicative of restricted airflow

specifically models 1600

Carrier HH12ZB180 Limit Switch maintaining the integrity of theThe 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