Carrier HH12HV151 Limit Switch 322838-752 this board-mounted switch utilizes an

this board-mounted switch utilizes an open on rise action

Technicians typically identify failure through high-pitched bearing noise

25 HP rating

and BDP350 models

This auto reset thermal limit switch features a SPST (Single-Pole Single-Throw) contact configuration

Carrier HH12HV151 Limit Switch 322838-752 this board-mounted switch utilizes anThe Carrier HH12HV151 Limit Switch is a critical OEM replacement part designed for precise thermal regulation within Carrier, Bryant, and Payne furnace air handlers. Engineered as a primary safety limit control, this snap action switch monitors the heat exchanger temperature to prevent overheating and potential component damage. It utilizes a fixed temperature setting to open the electrical circuit if the internal plenum temperature exceeds factory