The brass body construction and pressure-relieved design ensure that the valve’s opening degree remains independent of differential pressure

You can easily switch between clockwise (CW) and counter-clockwise (CCW) rotation by following the lead connection diagram on the nameplate

If the switch has popped

This HVAC circuit board is essential for restoring optimal staging performance and system efficiency in compatible furnaces

Carrier HH12680001 Fusible Link 323055-751 The brass body construction andThe Carrier HH12680001 Fusible Link is a critical thermal safety component engineered for precision circuit protection in furnace limit switch assemblies and fire damper applications. Rated for 110C (230F), this OEM Carrier part serves as a sacrificial thermal fuse that de bonds and opens the electrical circuit when ambient temperatures exceed the safe operating threshold. Designed for HVAC high temperature protection, it prevents heat related damage