Lochinvar & A.O. Smith 100148403 Limit Switch 319852-301 or a failing inducer motor

or a failing inducer motor that cannot reach the required static pressure

Manual Override Security: Requires a physical reset by a technician

Key Benefits Direct OEM Replacement: Fully interchangeable with part numbers PLT2702

we recommend this specific OEM part to maintain the manufacturer's safety specifications

Thermal Management: Features internal thermal protection to safeguard the windings against overheating during peak summer loads

Lochinvar & A.O. Smith 100148403 Limit Switch 319852-301 or a failing inducer motorThe Lochinvar & A. O. Smith 100148403 Limit Switch is a critical OEM replacement part designed for high limit temperature protection in commercial water heaters, boilers, and pool heaters. This 175 degree high limit assembly monitors the heat exchanger or outlet water temperature, providing an essential safety cutoff to prevent thermal runaway and equipment damage. Engineered for HVAC systems requiring precise thermal regulation, the 100148403 ensures