Carrier HH12ZB240 Limit Switch or cracked heat exchangers that

or cracked heat exchangers that cause internal temperatures to exceed the 333-degree rating

as a faucet aerator kit

ensuring correct mounting and limit switch wiring

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

Carrier HH12ZB240 Limit Switch or cracked heat exchangers thatThe 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