Williams P323665 Thermal Cutoff L99H008 verify your specific wiring diagram

verify your specific wiring diagram as fan circuitry is electrically separate from thermostatic circuitry

which is critical for the actuator's 22 lb seating force and 5/16-inch stroke to operate without binding

Durable Construction: Features a thermally protected motor and air-over cooling to withstand high-heat environments

ensuring a precise fit and restoring system performance to factory specifications

and Low—allow technicians to fine-tune the CFM across the heat exchanger for optimal temperature rise and latent cooling performance

Williams P323665 Thermal Cutoff L99H008 verify your specific wiring diagramWhen you're troubleshooting a Williams wall furnace that won't kick on despite a healthy pilot, the Williams P323665 Thermal Cutoff is a primary failure point to inspect. This genuine OEM Williams furnace part serves as a critical high limit safety switch, designed to interrupt the electrical circuit if internal temperatures exceed safe operating parameters. Specifically calibrated with a 167C (333F) trip point, this thermal link provides non