Lochinvar & A.O. Smith 100148403 Limit Switch
The 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 that the burner circuit is interrupted if the internal temperature exceeds the factory-set 175°F threshold.
This Lochinvar high limit switch is primarily utilized in EnergyRite pool heaters and various A.O. Smith boiler models, including the 152A through 402A ASME series. As a genuine replacement part, it maintains the appliance's safety listing and operational integrity. Technicians should verify that the 100148403 is the correct temperature limit switch by matching the specific HVAC part number and temperature rating before installation to ensure seamless boiler control compatibility.
Key Benefits- System Protection: Automatically interrupts the heating cycle at 175°F to prevent overheating.
- OEM Reliability: Genuine Lochinvar & A.O. Smith part ensures direct fit and factory-spec performance.
- ASME Compliance: Critical for maintaining safety standards in ASME-rated heaters.
- Direct Compatibility: Designed specifically for use with EnergyRite and 152A-402A series units.
- Why is my high limit switch tripping? Frequent tripping often indicates restricted water flow, scale buildup in the heat exchanger, or a failing circulating pump.
- Can I bypass this switch for testing? Bypassing safety controls is never recommended in a live environment; always replace a faulty 175 degree high limit with a new OEM component.
- Does this fit A.O. Smith water heaters? Yes, as a shared part between Lochinvar and A.O. Smith brands, it is compatible with specific commercial water heating models identifying this part number.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Lochinvar & A.O. Smith 100148403 Limit Switch
The 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 that the burner circuit is interrupted if the internal temperature exceeds the factory-set 175°F threshold.
This Lochinvar high limit switch is primarily utilized in EnergyRite pool heaters and various A.O. Smith boiler models, including the 152A through 402A ASME series. As a genuine replacement part, it maintains the appliance's safety listing and operational integrity. Technicians should verify that the 100148403 is the correct temperature limit switch by matching the specific HVAC part number and temperature rating before installation to ensure seamless boiler control compatibility.
Key Benefits- System Protection: Automatically interrupts the heating cycle at 175°F to prevent overheating.
- OEM Reliability: Genuine Lochinvar & A.O. Smith part ensures direct fit and factory-spec performance.
- ASME Compliance: Critical for maintaining safety standards in ASME-rated heaters.
- Direct Compatibility: Designed specifically for use with EnergyRite and 152A-402A series units.
- Why is my high limit switch tripping? Frequent tripping often indicates restricted water flow, scale buildup in the heat exchanger, or a failing circulating pump.
- Can I bypass this switch for testing? Bypassing safety controls is never recommended in a live environment; always replace a faulty 175 degree high limit with a new OEM component.
- Does this fit A.O. Smith water heaters? Yes, as a shared part between Lochinvar and A.O. Smith brands, it is compatible with specific commercial water heating models identifying this part number.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The 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 that the burner circuit is interrupted if the internal temperature exceeds the factory-set 175°F threshold.
This Lochinvar high limit switch is primarily utilized in EnergyRite pool heaters and various A.O. Smith boiler models, including the 152A through 402A ASME series. As a genuine replacement part, it maintains the appliance's safety listing and operational integrity. Technicians should verify that the 100148403 is the correct temperature limit switch by matching the specific HVAC part number and temperature rating before installation to ensure seamless boiler control compatibility.
Key Benefits- System Protection: Automatically interrupts the heating cycle at 175°F to prevent overheating.
- OEM Reliability: Genuine Lochinvar & A.O. Smith part ensures direct fit and factory-spec performance.
- ASME Compliance: Critical for maintaining safety standards in ASME-rated heaters.
- Direct Compatibility: Designed specifically for use with EnergyRite and 152A-402A series units.
- Why is my high limit switch tripping? Frequent tripping often indicates restricted water flow, scale buildup in the heat exchanger, or a failing circulating pump.
- Can I bypass this switch for testing? Bypassing safety controls is never recommended in a live environment; always replace a faulty 175 degree high limit with a new OEM component.
- Does this fit A.O. Smith water heaters? Yes, as a shared part between Lochinvar and A.O. Smith brands, it is compatible with specific commercial water heating models identifying this part number.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
