
Lochinvar & A.O. Smith 100208557 Sensor
The Lochinvar & A. O. Smith 100208557 Sensor is a high-precision dual outlet sensor engineered for critical temperature monitoring in commercial boilers and high-efficiency water heaters. As a veteran-grade OEM replacement part, this thermistor-based component ensures the integrated control board receives real-time data to manage the delta T across the heat exchanger. Accurate monitoring by the 100208557 temperature sensor is vital for preventing "Inlet Sensor Fault" lockouts and ensuring the system operates within its designed thermal parameters. This sensor is a direct replacement for legacy part numbers TST20010K and 100274733, providing seamless integration with the Lochinvar Copper-Fin and FTXL series. By maintaining precise thermal feedback, this dual outlet sensor helps contractors avoid premature component fatigue and optimizes the modulation of the combustion system for maximum fuel efficiency.
Key Benefits:- Ensures accurate delta T calculations to protect the heat exchanger from overheating.
- Eliminates frequent "Sensor Fault" or "Lockout" errors caused by drifting resistance in aged thermistor sensors.
- Directly compatible with a wide range of Lochinvar and A. O. Smith commercial boilers, including FBN, FBL, and OFN models.
- Features a rugged dual-element design for redundant and reliable outlet temperature tracking.
- Optimizes system uptime by providing the predictive maintenance data required by modern smart controls.
- How do I troubleshoot a 100208557 sensor fault? Verify resistance against the manufacturer’s temperature-resistance chart; a shorted or open circuit usually indicates the need for a physical replacement.
- Is this sensor compatible with my Crest or Copper-Fin model? Yes, this 100208557 dual outlet sensor is the standard specification for most high-capacity Lochinvar units; always cross-reference your specific serial number for confirmation.
- What causes these sensors to fail? Mineral buildup on the bulb-well or moisture ingress into the wiring harness are common culprits that lead to inaccurate signals or system lockouts.
This item is not eligible for free shipping.
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: $76.98
-65%$76.98
$26.94Lochinvar & A.O. Smith 100208557 Sensor
The Lochinvar & A. O. Smith 100208557 Sensor is a high-precision dual outlet sensor engineered for critical temperature monitoring in commercial boilers and high-efficiency water heaters. As a veteran-grade OEM replacement part, this thermistor-based component ensures the integrated control board receives real-time data to manage the delta T across the heat exchanger. Accurate monitoring by the 100208557 temperature sensor is vital for preventing "Inlet Sensor Fault" lockouts and ensuring the system operates within its designed thermal parameters. This sensor is a direct replacement for legacy part numbers TST20010K and 100274733, providing seamless integration with the Lochinvar Copper-Fin and FTXL series. By maintaining precise thermal feedback, this dual outlet sensor helps contractors avoid premature component fatigue and optimizes the modulation of the combustion system for maximum fuel efficiency.
Key Benefits:- Ensures accurate delta T calculations to protect the heat exchanger from overheating.
- Eliminates frequent "Sensor Fault" or "Lockout" errors caused by drifting resistance in aged thermistor sensors.
- Directly compatible with a wide range of Lochinvar and A. O. Smith commercial boilers, including FBN, FBL, and OFN models.
- Features a rugged dual-element design for redundant and reliable outlet temperature tracking.
- Optimizes system uptime by providing the predictive maintenance data required by modern smart controls.
- How do I troubleshoot a 100208557 sensor fault? Verify resistance against the manufacturer’s temperature-resistance chart; a shorted or open circuit usually indicates the need for a physical replacement.
- Is this sensor compatible with my Crest or Copper-Fin model? Yes, this 100208557 dual outlet sensor is the standard specification for most high-capacity Lochinvar units; always cross-reference your specific serial number for confirmation.
- What causes these sensors to fail? Mineral buildup on the bulb-well or moisture ingress into the wiring harness are common culprits that lead to inaccurate signals or system lockouts.
This item is not eligible for free shipping.
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.
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Description
The Lochinvar & A. O. Smith 100208557 Sensor is a high-precision dual outlet sensor engineered for critical temperature monitoring in commercial boilers and high-efficiency water heaters. As a veteran-grade OEM replacement part, this thermistor-based component ensures the integrated control board receives real-time data to manage the delta T across the heat exchanger. Accurate monitoring by the 100208557 temperature sensor is vital for preventing "Inlet Sensor Fault" lockouts and ensuring the system operates within its designed thermal parameters. This sensor is a direct replacement for legacy part numbers TST20010K and 100274733, providing seamless integration with the Lochinvar Copper-Fin and FTXL series. By maintaining precise thermal feedback, this dual outlet sensor helps contractors avoid premature component fatigue and optimizes the modulation of the combustion system for maximum fuel efficiency.
Key Benefits:- Ensures accurate delta T calculations to protect the heat exchanger from overheating.
- Eliminates frequent "Sensor Fault" or "Lockout" errors caused by drifting resistance in aged thermistor sensors.
- Directly compatible with a wide range of Lochinvar and A. O. Smith commercial boilers, including FBN, FBL, and OFN models.
- Features a rugged dual-element design for redundant and reliable outlet temperature tracking.
- Optimizes system uptime by providing the predictive maintenance data required by modern smart controls.
- How do I troubleshoot a 100208557 sensor fault? Verify resistance against the manufacturer’s temperature-resistance chart; a shorted or open circuit usually indicates the need for a physical replacement.
- Is this sensor compatible with my Crest or Copper-Fin model? Yes, this 100208557 dual outlet sensor is the standard specification for most high-capacity Lochinvar units; always cross-reference your specific serial number for confirmation.
- What causes these sensors to fail? Mineral buildup on the bulb-well or moisture ingress into the wiring harness are common culprits that lead to inaccurate signals or system lockouts.
This item is not eligible for free shipping.
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.












