Carrier HH12ZB240 Limit Switch automatically returning to a fixed

automatically returning to a fixed close at 150°F once internal temperatures stabilize

Key Benefits Precise Millivolt Output: Ensures consistent communication with the gas valve to prevent unexpected furnace shutdowns

This eight-hole gasket is specifically engineered for use with the Series 47-2 combination water feeder and low water cut-off units

When performing a valve rebuild

as a faucet aerator kit

Carrier HH12ZB240 Limit Switch automatically returning to a fixedThe Carrier HH12ZB240 is a high limit OEM replacement part engineered for precise thermal regulation and safety in Carrier, Bryant, and Payne gas furnaces. As a normally closed (NC) switch, it is designed to protect the heat exchanger from damage caused by restricted airflow or blower failure. This auto limit switch functions on a specific thermal cycle, opening the circuit when internal temperatures reach 240F to interrupt the gas valve and closing