Williams P323366 Limit Switch 326058-758 verify the specific internal assembly

verify the specific internal assembly or manual stem configuration before installation

Most failures result from thermal stress causing cracks or accumulated sediment and rust from the heat exchanger blocking the drain ports

This genuine York blower wheel ensures consistent performance without the balance issues common to universal alternatives

handling the high-torque startups characteristic of modern high-efficiency compressors

ensuring the millivolt signal is strong enough to keep the standing pilot ignition system safety valve held open without nuisance shutoffs

Williams P323366 Limit Switch 326058-758 verify the specific internal assemblyThe Williams P323366 Limit Switch is a critical high limit safety component designed for Williams Forsaire Electric Furnaces and specific direct vent heating systems. This L240 40F limit switch features a bimetallic disc that monitors internal plenum temperatures to prevent thermal overstressed conditions. When the temperature reaches the fixed 240F trip point, the switch opens the circuit to interrupt power to the heating elements or gas valve,