but note that the wattage output will be derated to approximately 7

this automatic reset limit switch (CO) monitors the temperature of the air passing over the heat exchanger

ensure the flame sensor is clean and the furnace control board ground is secure

check the relay with a multimeter

including those from Honeywell

Lochinvar & A.O. Smith 100166244 Pressure Switch Els PW 17895 but note that the wattageThe Lochinvar & A. O. Smith 100166244 is a critical OEM boiler replacement part engineered for precise air pressure monitoring within high efficiency heating systems. This 1. 06" WC SPDT pressure switch is a factory certified component designed to ensure the inducer motor or blower is generating sufficient draft before allowing the ignition sequence to proceed. As a Single Pole Double Throw (SPDT) configuration, it provides versatile switching logic,