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this genuine Source1 part ensures the integrated control module communicates correctly with the system furnace board
Operating at 230V and a nominal 1025 RPM
Replacing a cracked or leaking 311213-404 is essential for preventing water damage to the secondary heat exchanger and the furnace control board below
Also identified as a water heater flame rod or igniter-flame sensor assembly
ensuring seamless replacement
Lochinvar & A.O. Smith 100208405 Pressure Switch 328140-751 this genuine Source1 part ensuresThe Lochinvar & A. O. Smith 100208405 Pressure Switch is a critical safety component designed for high efficiency condensing boilers and commercial water heaters. This OEM replacement pressure switch monitors the pressure differential within the combustion chamber or venting system to ensure safe operation. When the blower motor proof is established, the switch closes its contacts to allow the ignition sequence to proceed. If a blocked flue or