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A failed sensor often results in incorrect defrost timing
Use 1/4" O
Precise Fitment: Engineered to match the four-bolt valve bracket pattern for the Model 21-27 series
Integrated Diagnostics: Facilitates faster troubleshooting with clear indicators for system status and fault detection
Lochinvar & A.O. Smith 100171950 Valve Freon A failed sensor often resultsThe Lochinvar & A. O. Smith 100171950 Valve is a critical OEM replacement gas valve kit engineered specifically for Lochinvar Knight WH399 wall mount boilers. This high precision combustion control assembly includes the gas valve, venturi gasket, and necessary hardware to ensure a zero governor manifold pressure environment. As a veteran grade commercial boiler part, it regulates fuel flow based on the negative pressure signal generated by the blower,