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Whether you are performing a condenser motor replacement or upgrading a commercial rooftop unit
an open circuit during cool-down indicates a failed protector that requires replacement
the 69W43 detects the presence of the burner flame to ensure safe combustion
000 BTU models
Lochinvar & A.O. Smith 100113144 Switch 328140-751 Whether you are performing aThe Lochinvar & A. O. Smith 100113144 Blower Prover Switch is a critical safety component designed for high efficiency water heaters and commercial boilers. As a direct OEM replacement for NS2 1333 01, this pressure switch (often referred to as an air pressure switch or draft prover switch) monitors the differential pressure created by the inducer motor. By verifying stable airflow, it ensures the sequence of operation proceeds to ignition safely.
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