the internal bi-metal disc may be fatigued and require replacement

this OEM 110C thermal limit switch provides precise circuit interruption when internal temperatures exceed 230°F (110°C)

this 1016380R Nordyne board restores critical system logic

providing definitive electrical making or breaking of circuits for boiler pump control

This specific model is an automatic reset pressure switch

Williams 8940 Conversion Kit 320788-703 the internal bi-metal disc mayThe Williams 8940 Conversion Kit is a field proven solution for transitioning 22038 series gravity direct vent furnaces from natural gas to liquid propane (LP). As a genuine OEM Williams part, this 22038 conversion kit ensures your 22,000 BTU heating system maintains its rated thermal efficiency and manifold pressure requirements. Precision machined LP burner orifices and a dedicated gas valve regulator spring are included to provide the correct 10"