This 2-switch model can control up to two heating stages or one heating stage and the blower motor blower

the internal bimetal disc is likely warped

preventing delayed ignition and hazardous gas buildup

reducing electrical arcing and extending the service life of the compressor contactor or fan relay it initiates

Lochinvar & A.O. Smith 100166300 Pressure Regulator Els PW 17895 This 2-switch model can controlThe Lochinvar & A. O. Smith 100166300 Pressure Regulator serves as a critical OEM replacement part for managing pilot gas pressure in high efficiency commercial boilers and water heaters. Professional contractors recognize this component by its alternative part number, PRV2010, with which it is technically identical. Engineered for precision, this natural gas regulator ensures the burner assembly receives a stable, regulated flow, preventing flame