For technicians servicing industrial unit heaters

How do I test a blocked flue switch during a service call

Extended Wiring Capability: The integrated 34-inch lead wires allow for easy installation in various chassis sizes and configurations

eliminating the guesswork of aftermarket "universal" alternatives

Carrier HH12HA163 Limit Switch For technicians servicing industrial unitThe Carrier HH12HA163 Limit Switch is a critical safety component designed for precise thermal monitoring in high efficiency furnace applications. This fixed temperature limit control features a 160 degree Fahrenheit trip point and is engineered with a manual reset (M R) mechanism, ensuring the system remains offline if an over temperature condition occurs until a technician can verify heat exchanger integrity and airflow. Built to meet OEM Carrier