
Lochinvar & A.O. Smith 100208563 Sensor
The Lochinvar & A.O. Smith 100208563 Sensor is a critical OEM replacement part designed for high-precision temperature monitoring in commercial boilers and volume water heaters. This 1/4" NPT immersion sensor functions as a thermostat sensor kit, providing real-time inlet temperature sensing data to the integrated control board. Built for durability in high-demand HVACR systems, it features a rugged thermistor housed in a 1/4-inch threaded immersion well, ensuring a leak-proof seal and direct contact with the thermal medium. Compatibility includes a wide range of Lochinvar Copper-Fin and A.O. Smith AWH/KBX models where accurate aquastat control or high-limit sensing is required. Replacing a drifted or fouled immersion sensor stat is essential for preventing short-cycling and maintaining the combustion efficiency of the unit. This technical HVAC part facilitates optimized thermal management, ensuring the system operates within its engineered setpoints without risking nuisance lockouts or heat exchanger stress.
Key Benefits- Precise Thermal Tracking: Delivers accurate resistance-to-temperature data to the primary control module for improved modulation accuracy.
- OEM Compatibility: Guaranteed fit for Lochinvar and A.O. Smith commercial units, replacing retired part numbers and maintaining UL/CSA listing integrity.
- NPT Threaded Design: Standard 1/4" NPT threads allow for simplified installation into existing immersion wells or manifold ports.
- System Reliability: Corrects error codes related to sensor faults or temperature out-of-range conditions, preventing unnecessary system downtime.
How do I test if the 100208563 sensor is failing?
Use a multimeter to measure the ohm resistance across the sensor leads. Compare the reading to the manufacturer’s temperature-resistance chart; an open circuit or values significantly outside the specified range indicate a failed thermistor.
Will this sensor resolve a "Limit String Open" or "Sensor Fault" code?
Yes, if the diagnostic code points to the inlet sensor or immersion stat. This part is the direct technical solution for faulty temperature feedback that causes control board lockouts.
Does this kit include the immersion well?
This specific kit typically includes the immersion sensor probe and necessary harness; always verify if the existing 1/4" NPT well is clear of scale or debris before reinserting the new lead.
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: $67.22
-65%$67.22
$23.53Lochinvar & A.O. Smith 100208563 Sensor
The Lochinvar & A.O. Smith 100208563 Sensor is a critical OEM replacement part designed for high-precision temperature monitoring in commercial boilers and volume water heaters. This 1/4" NPT immersion sensor functions as a thermostat sensor kit, providing real-time inlet temperature sensing data to the integrated control board. Built for durability in high-demand HVACR systems, it features a rugged thermistor housed in a 1/4-inch threaded immersion well, ensuring a leak-proof seal and direct contact with the thermal medium. Compatibility includes a wide range of Lochinvar Copper-Fin and A.O. Smith AWH/KBX models where accurate aquastat control or high-limit sensing is required. Replacing a drifted or fouled immersion sensor stat is essential for preventing short-cycling and maintaining the combustion efficiency of the unit. This technical HVAC part facilitates optimized thermal management, ensuring the system operates within its engineered setpoints without risking nuisance lockouts or heat exchanger stress.
Key Benefits- Precise Thermal Tracking: Delivers accurate resistance-to-temperature data to the primary control module for improved modulation accuracy.
- OEM Compatibility: Guaranteed fit for Lochinvar and A.O. Smith commercial units, replacing retired part numbers and maintaining UL/CSA listing integrity.
- NPT Threaded Design: Standard 1/4" NPT threads allow for simplified installation into existing immersion wells or manifold ports.
- System Reliability: Corrects error codes related to sensor faults or temperature out-of-range conditions, preventing unnecessary system downtime.
How do I test if the 100208563 sensor is failing?
Use a multimeter to measure the ohm resistance across the sensor leads. Compare the reading to the manufacturer’s temperature-resistance chart; an open circuit or values significantly outside the specified range indicate a failed thermistor.
Will this sensor resolve a "Limit String Open" or "Sensor Fault" code?
Yes, if the diagnostic code points to the inlet sensor or immersion stat. This part is the direct technical solution for faulty temperature feedback that causes control board lockouts.
Does this kit include the immersion well?
This specific kit typically includes the immersion sensor probe and necessary harness; always verify if the existing 1/4" NPT well is clear of scale or debris before reinserting the new lead.
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 100208563 Sensor is a critical OEM replacement part designed for high-precision temperature monitoring in commercial boilers and volume water heaters. This 1/4" NPT immersion sensor functions as a thermostat sensor kit, providing real-time inlet temperature sensing data to the integrated control board. Built for durability in high-demand HVACR systems, it features a rugged thermistor housed in a 1/4-inch threaded immersion well, ensuring a leak-proof seal and direct contact with the thermal medium. Compatibility includes a wide range of Lochinvar Copper-Fin and A.O. Smith AWH/KBX models where accurate aquastat control or high-limit sensing is required. Replacing a drifted or fouled immersion sensor stat is essential for preventing short-cycling and maintaining the combustion efficiency of the unit. This technical HVAC part facilitates optimized thermal management, ensuring the system operates within its engineered setpoints without risking nuisance lockouts or heat exchanger stress.
Key Benefits- Precise Thermal Tracking: Delivers accurate resistance-to-temperature data to the primary control module for improved modulation accuracy.
- OEM Compatibility: Guaranteed fit for Lochinvar and A.O. Smith commercial units, replacing retired part numbers and maintaining UL/CSA listing integrity.
- NPT Threaded Design: Standard 1/4" NPT threads allow for simplified installation into existing immersion wells or manifold ports.
- System Reliability: Corrects error codes related to sensor faults or temperature out-of-range conditions, preventing unnecessary system downtime.
How do I test if the 100208563 sensor is failing?
Use a multimeter to measure the ohm resistance across the sensor leads. Compare the reading to the manufacturer’s temperature-resistance chart; an open circuit or values significantly outside the specified range indicate a failed thermistor.
Will this sensor resolve a "Limit String Open" or "Sensor Fault" code?
Yes, if the diagnostic code points to the inlet sensor or immersion stat. This part is the direct technical solution for faulty temperature feedback that causes control board lockouts.
Does this kit include the immersion well?
This specific kit typically includes the immersion sensor probe and necessary harness; always verify if the existing 1/4" NPT well is clear of scale or debris before reinserting the new lead.
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.












