Williams P323031 Limit Switch To maintain the integrity of

To maintain the integrity of the sealed combustion system and ensure safe operation

As the direct updated replacement for the obsolete 312900 model

direct-fit installation across various packaged units and air handlers

It is designed to open or close one circuit only

The color coding indicates the orifice size of the inline restrictor

Williams P323031 Limit Switch To maintain the integrity ofThe Williams P323031 Limit Switch is a critical genuine OEM replacement part engineered specifically for technical compatibility with Williams Comfort Products floor furnaces. This fixed temperature 95F limit switch serves as a primary safety control, monitoring the internal cabinet air temperature to prevent heat exchanger damage and system overheating. As a vital component for gas furnace safety control, it initiates a circuit break if temperatures