Lochinvar & A.O. Smith 100275527 Flue Sensor
The Lochinvar & A.O. Smith 100275527 Flue Sensor with integrated grommet is a critical safety and monitoring component used across high-efficiency condensing boilers and commercial water heaters. This negative temperature coefficient (NTC) thermistor provides real-time flue gas temperature monitoring to the control board, ensuring the appliance operates within specified thermal limits and prevents heat exchanger damage. Designed as a direct replacement for OEM part number 100275527 (formerly 100170584), this sensor is essential for HVAC troubleshooting when encountering blocked flue sensor errors or shutdown codes. The included high-temperature silicone grommet ensures a gastight seal at the exhaust vent penetration, preventing combustion byproduct leakage. Contractors should verify electrical resistance against the manufacturer’s thermistor resistance chart during diagnostic cycles. This sensor is compatible with a wide range of Lochinvar Knight, Armor, and A.O. Smith Cyclone models where precise exhaust gas temperature sensing is required for system modulation and safety interlock protocols.
Key Technical Benefits- OEM Compatibility: Exact replacement for Lochinvar 100170584 and A.O. Smith 100275527, ensuring correct signal voltage and logic board communication.
- Enhanced Safety: Provides high-limit protection by triggering a system lockout if exhaust temperatures exceed safe operating parameters.
- Simplified Installation: Features a plug-and-play wiring harness and pre-installed grommet for rapid field replacement.
- Contaminant Resistance: Built to withstand the corrosive environment of condensing flue gases and acidic condensate.
What are the symptoms of a failing flue sensor?
A faulty sensor often triggers a 'Flue High Temp' or 'Sensor Open/Short' error code on the control display, causing the unit to lockout and prevent the combustion cycle.
How do I test the 100275527 sensor?
Using a multimeter set to ohms, measure the resistance across the terminals and compare the reading to the ambient temperature on the 10k ohm thermistor scale.
Is the grommet included with this part number?
Yes, this flue temperature sensor comes with the required rubber grommet to maintain a proper seal on the PVC or CPVC venting material.
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: $29.28
-65%$29.28
$10.25Lochinvar & A.O. Smith 100275527 Flue Sensor
The Lochinvar & A.O. Smith 100275527 Flue Sensor with integrated grommet is a critical safety and monitoring component used across high-efficiency condensing boilers and commercial water heaters. This negative temperature coefficient (NTC) thermistor provides real-time flue gas temperature monitoring to the control board, ensuring the appliance operates within specified thermal limits and prevents heat exchanger damage. Designed as a direct replacement for OEM part number 100275527 (formerly 100170584), this sensor is essential for HVAC troubleshooting when encountering blocked flue sensor errors or shutdown codes. The included high-temperature silicone grommet ensures a gastight seal at the exhaust vent penetration, preventing combustion byproduct leakage. Contractors should verify electrical resistance against the manufacturer’s thermistor resistance chart during diagnostic cycles. This sensor is compatible with a wide range of Lochinvar Knight, Armor, and A.O. Smith Cyclone models where precise exhaust gas temperature sensing is required for system modulation and safety interlock protocols.
Key Technical Benefits- OEM Compatibility: Exact replacement for Lochinvar 100170584 and A.O. Smith 100275527, ensuring correct signal voltage and logic board communication.
- Enhanced Safety: Provides high-limit protection by triggering a system lockout if exhaust temperatures exceed safe operating parameters.
- Simplified Installation: Features a plug-and-play wiring harness and pre-installed grommet for rapid field replacement.
- Contaminant Resistance: Built to withstand the corrosive environment of condensing flue gases and acidic condensate.
What are the symptoms of a failing flue sensor?
A faulty sensor often triggers a 'Flue High Temp' or 'Sensor Open/Short' error code on the control display, causing the unit to lockout and prevent the combustion cycle.
How do I test the 100275527 sensor?
Using a multimeter set to ohms, measure the resistance across the terminals and compare the reading to the ambient temperature on the 10k ohm thermistor scale.
Is the grommet included with this part number?
Yes, this flue temperature sensor comes with the required rubber grommet to maintain a proper seal on the PVC or CPVC venting material.
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 100275527 Flue Sensor with integrated grommet is a critical safety and monitoring component used across high-efficiency condensing boilers and commercial water heaters. This negative temperature coefficient (NTC) thermistor provides real-time flue gas temperature monitoring to the control board, ensuring the appliance operates within specified thermal limits and prevents heat exchanger damage. Designed as a direct replacement for OEM part number 100275527 (formerly 100170584), this sensor is essential for HVAC troubleshooting when encountering blocked flue sensor errors or shutdown codes. The included high-temperature silicone grommet ensures a gastight seal at the exhaust vent penetration, preventing combustion byproduct leakage. Contractors should verify electrical resistance against the manufacturer’s thermistor resistance chart during diagnostic cycles. This sensor is compatible with a wide range of Lochinvar Knight, Armor, and A.O. Smith Cyclone models where precise exhaust gas temperature sensing is required for system modulation and safety interlock protocols.
Key Technical Benefits- OEM Compatibility: Exact replacement for Lochinvar 100170584 and A.O. Smith 100275527, ensuring correct signal voltage and logic board communication.
- Enhanced Safety: Provides high-limit protection by triggering a system lockout if exhaust temperatures exceed safe operating parameters.
- Simplified Installation: Features a plug-and-play wiring harness and pre-installed grommet for rapid field replacement.
- Contaminant Resistance: Built to withstand the corrosive environment of condensing flue gases and acidic condensate.
What are the symptoms of a failing flue sensor?
A faulty sensor often triggers a 'Flue High Temp' or 'Sensor Open/Short' error code on the control display, causing the unit to lockout and prevent the combustion cycle.
How do I test the 100275527 sensor?
Using a multimeter set to ohms, measure the resistance across the terminals and compare the reading to the ambient temperature on the 10k ohm thermistor scale.
Is the grommet included with this part number?
Yes, this flue temperature sensor comes with the required rubber grommet to maintain a proper seal on the PVC or CPVC venting material.
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.
