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Engineered for a universal fit
Clean the flame rod and check the microamp signal to confirm if the issue lies with the rod or the internal circuitry of the control board
the CNT3457 often replaces legacy part numbers including CNT01634
Outside of a mechanical switch failure
Industrial-Grade Construction: Built to withstand the thermal stresses of residential and light commercial plenum environments
Lochinvar & A.O. Smith 100108899 Limit Switch Els PW 17895 Engineered for a universal fitThe Lochinvar & A. O. Smith 100108899 Limit Switch is a critical safety component designed for high performance HVAC equipment and water heating systems. Engineered for precision, this L200F manual reset high limit switch monitors internal temperatures and executes a high temperature shutdown if the system exceeds the 200F safety threshold. By interrupting the electrical circuit during an overheat event, it prevents damage to the heat exchanger and