Lochinvar & A.O. Smith 100326994 Switch
The Lochinvar & A.O. Smith 100326994 is a professional-grade L290F manual reset thermal switch designed for critical high-limit safety applications in commercial and residential water heaters. As a direct replacement for legacy part 100167474, this manual reset limit switch ensures the burner circuit is interrupted if internal temperatures exceed the 290-degree Fahrenheit threshold. This component is essential for preventing hazardous overheating conditions in commercial water heater repair and maintenance. For field technicians, verifying the Lochinvar thermal switch compatibility is vital, as this part is commonly specified for BNR, BNL, and SNA series units. The 100326994 features a robust bimetal sensing element and standard terminal connections for streamlined installation. By integrating this OEM water heater part, you maintain the original equipment manufacturer's safety rating and ensure precise thermal protection. Relying on A.O. Smith replacement sensors ensures the appliance operates within specified parameters, preventing nuisance tripping while providing reliable high-limit protection.
Key Benefits for Technicians- Direct OEM Replacement: Seamlessly replaces 100167474 without the need for mounting modifications or harness restructuring.
- Precise Safety Calibration: Fixed L290F trip point ensures the system shuts down accurately before thermal stress damages the heat exchanger.
- Manual Reset Functionality: Requires physical intervention following a trip, allowing the technician to diagnose the root cause of the over-temperature condition.
- Broad Application: Compatible with a wide range of Lochinvar and A.O. Smith gas-fired equipment, reducing the inventory overhead for HVAC service kits.
What causes a 290F thermal switch to trip frequently?
Frequent tripping usually indicates excessive scale buildup in the tank, a failing circulating pump, or an obstructed flue. If the 100326994 switch trips, verify the water flow rate and actual tank temperature before replacing the sensor.
Can I bypass the manual reset for testing?
Bypassing a safety thermal switch is never recommended outside of a strictly controlled diagnostic sequence. Always replace a faulty limit with the correct L290F rated component to ensure the system remains code-compliant.
Is this part compatible with high-efficiency condensing models?
Compatibility depends on the specific Lochinvar or A.O. Smith model number. While this switch is common in atmospheric and power-vented units, always check the parts list for your specific serial number to confirm the 290F rating is appropriate.
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.
Original: $61.55
-65%$61.55
$21.54Lochinvar & A.O. Smith 100326994 Switch
The Lochinvar & A.O. Smith 100326994 is a professional-grade L290F manual reset thermal switch designed for critical high-limit safety applications in commercial and residential water heaters. As a direct replacement for legacy part 100167474, this manual reset limit switch ensures the burner circuit is interrupted if internal temperatures exceed the 290-degree Fahrenheit threshold. This component is essential for preventing hazardous overheating conditions in commercial water heater repair and maintenance. For field technicians, verifying the Lochinvar thermal switch compatibility is vital, as this part is commonly specified for BNR, BNL, and SNA series units. The 100326994 features a robust bimetal sensing element and standard terminal connections for streamlined installation. By integrating this OEM water heater part, you maintain the original equipment manufacturer's safety rating and ensure precise thermal protection. Relying on A.O. Smith replacement sensors ensures the appliance operates within specified parameters, preventing nuisance tripping while providing reliable high-limit protection.
Key Benefits for Technicians- Direct OEM Replacement: Seamlessly replaces 100167474 without the need for mounting modifications or harness restructuring.
- Precise Safety Calibration: Fixed L290F trip point ensures the system shuts down accurately before thermal stress damages the heat exchanger.
- Manual Reset Functionality: Requires physical intervention following a trip, allowing the technician to diagnose the root cause of the over-temperature condition.
- Broad Application: Compatible with a wide range of Lochinvar and A.O. Smith gas-fired equipment, reducing the inventory overhead for HVAC service kits.
What causes a 290F thermal switch to trip frequently?
Frequent tripping usually indicates excessive scale buildup in the tank, a failing circulating pump, or an obstructed flue. If the 100326994 switch trips, verify the water flow rate and actual tank temperature before replacing the sensor.
Can I bypass the manual reset for testing?
Bypassing a safety thermal switch is never recommended outside of a strictly controlled diagnostic sequence. Always replace a faulty limit with the correct L290F rated component to ensure the system remains code-compliant.
Is this part compatible with high-efficiency condensing models?
Compatibility depends on the specific Lochinvar or A.O. Smith model number. While this switch is common in atmospheric and power-vented units, always check the parts list for your specific serial number to confirm the 290F rating is appropriate.
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 100326994 is a professional-grade L290F manual reset thermal switch designed for critical high-limit safety applications in commercial and residential water heaters. As a direct replacement for legacy part 100167474, this manual reset limit switch ensures the burner circuit is interrupted if internal temperatures exceed the 290-degree Fahrenheit threshold. This component is essential for preventing hazardous overheating conditions in commercial water heater repair and maintenance. For field technicians, verifying the Lochinvar thermal switch compatibility is vital, as this part is commonly specified for BNR, BNL, and SNA series units. The 100326994 features a robust bimetal sensing element and standard terminal connections for streamlined installation. By integrating this OEM water heater part, you maintain the original equipment manufacturer's safety rating and ensure precise thermal protection. Relying on A.O. Smith replacement sensors ensures the appliance operates within specified parameters, preventing nuisance tripping while providing reliable high-limit protection.
Key Benefits for Technicians- Direct OEM Replacement: Seamlessly replaces 100167474 without the need for mounting modifications or harness restructuring.
- Precise Safety Calibration: Fixed L290F trip point ensures the system shuts down accurately before thermal stress damages the heat exchanger.
- Manual Reset Functionality: Requires physical intervention following a trip, allowing the technician to diagnose the root cause of the over-temperature condition.
- Broad Application: Compatible with a wide range of Lochinvar and A.O. Smith gas-fired equipment, reducing the inventory overhead for HVAC service kits.
What causes a 290F thermal switch to trip frequently?
Frequent tripping usually indicates excessive scale buildup in the tank, a failing circulating pump, or an obstructed flue. If the 100326994 switch trips, verify the water flow rate and actual tank temperature before replacing the sensor.
Can I bypass the manual reset for testing?
Bypassing a safety thermal switch is never recommended outside of a strictly controlled diagnostic sequence. Always replace a faulty limit with the correct L290F rated component to ensure the system remains code-compliant.
Is this part compatible with high-efficiency condensing models?
Compatibility depends on the specific Lochinvar or A.O. Smith model number. While this switch is common in atmospheric and power-vented units, always check the parts list for your specific serial number to confirm the 290F rating is appropriate.
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.
