Utica-Dunkirk AC-3940-47 Flame Sensor Kit
The Utica-Dunkirk AC-3940-47 Flame Sensor Kit is an essential OEM replacement part engineered for precise flame rectification in high-efficiency gas-fired furnaces and boilers. This critical safety component monitors the burner's combustion process, ensuring the gas valve remains open only when a consistent ignition source is detected. Designed with a robust high-temperature rod, the sensor operates reliably across a temperature range of -40 to 185 degrees F, with a rapid response time of 0.5 to 2 seconds to mitigate safety risks like unburned gas accumulation. As a genuine HVAC replacement part, the AC-3940-47—also identified as part number PSE-Y37—maintains strict compatibility with Utica-Dunkirk and Haier burner assemblies. For contractors managing furnace troubleshooting, this flame sensor kit provides the necessary sensitivity to eliminate nuisance lockouts caused by carbon buildup or localized oxidation on older proves.
Key Benefits- Precise Flame Rectification: Effectively converts AC voltage to a DC signal for reliable control board communication.
- Enhanced HVAC Safety: Rapid flame-out detection prevents the release of uncombusted gas into the heat exchanger.
- Industrial-Grade Construction: Built with high-quality refractory materials for extended service life under thermal stress.
- Seamless OEM Fit: Direct drop-in replacement for Utica-Dunkirk AC-3940-47 and PSE-Y37 specifications.
What are the signs of a failing flame sensor?
Technicians typically observe short-cycling, where the burner ignites but shuts down within seconds, often indicating that the sensor can no longer detect the microamp signal.
How do I install the AC-3940-47 Flame Sensor Kit?
After isolating power and gas, remove the mounting screw and existing sensor. Install the new component, ensuring the rod is positioned at least 0.5 inches into the internal flame path without touching any metal structures.
Is the AC-3940-47 compatible with multiple brands?
Yes, while primary to Utica-Dunkirk gas-fired appliances, this genuine OEM replacement is also compatible with specific Haier HVAC models and replaces part number PSE-Y37.
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.
Utica-Dunkirk AC-3940-47 Flame Sensor Kit
The Utica-Dunkirk AC-3940-47 Flame Sensor Kit is an essential OEM replacement part engineered for precise flame rectification in high-efficiency gas-fired furnaces and boilers. This critical safety component monitors the burner's combustion process, ensuring the gas valve remains open only when a consistent ignition source is detected. Designed with a robust high-temperature rod, the sensor operates reliably across a temperature range of -40 to 185 degrees F, with a rapid response time of 0.5 to 2 seconds to mitigate safety risks like unburned gas accumulation. As a genuine HVAC replacement part, the AC-3940-47—also identified as part number PSE-Y37—maintains strict compatibility with Utica-Dunkirk and Haier burner assemblies. For contractors managing furnace troubleshooting, this flame sensor kit provides the necessary sensitivity to eliminate nuisance lockouts caused by carbon buildup or localized oxidation on older proves.
Key Benefits- Precise Flame Rectification: Effectively converts AC voltage to a DC signal for reliable control board communication.
- Enhanced HVAC Safety: Rapid flame-out detection prevents the release of uncombusted gas into the heat exchanger.
- Industrial-Grade Construction: Built with high-quality refractory materials for extended service life under thermal stress.
- Seamless OEM Fit: Direct drop-in replacement for Utica-Dunkirk AC-3940-47 and PSE-Y37 specifications.
What are the signs of a failing flame sensor?
Technicians typically observe short-cycling, where the burner ignites but shuts down within seconds, often indicating that the sensor can no longer detect the microamp signal.
How do I install the AC-3940-47 Flame Sensor Kit?
After isolating power and gas, remove the mounting screw and existing sensor. Install the new component, ensuring the rod is positioned at least 0.5 inches into the internal flame path without touching any metal structures.
Is the AC-3940-47 compatible with multiple brands?
Yes, while primary to Utica-Dunkirk gas-fired appliances, this genuine OEM replacement is also compatible with specific Haier HVAC models and replaces part number PSE-Y37.
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 Utica-Dunkirk AC-3940-47 Flame Sensor Kit is an essential OEM replacement part engineered for precise flame rectification in high-efficiency gas-fired furnaces and boilers. This critical safety component monitors the burner's combustion process, ensuring the gas valve remains open only when a consistent ignition source is detected. Designed with a robust high-temperature rod, the sensor operates reliably across a temperature range of -40 to 185 degrees F, with a rapid response time of 0.5 to 2 seconds to mitigate safety risks like unburned gas accumulation. As a genuine HVAC replacement part, the AC-3940-47—also identified as part number PSE-Y37—maintains strict compatibility with Utica-Dunkirk and Haier burner assemblies. For contractors managing furnace troubleshooting, this flame sensor kit provides the necessary sensitivity to eliminate nuisance lockouts caused by carbon buildup or localized oxidation on older proves.
Key Benefits- Precise Flame Rectification: Effectively converts AC voltage to a DC signal for reliable control board communication.
- Enhanced HVAC Safety: Rapid flame-out detection prevents the release of uncombusted gas into the heat exchanger.
- Industrial-Grade Construction: Built with high-quality refractory materials for extended service life under thermal stress.
- Seamless OEM Fit: Direct drop-in replacement for Utica-Dunkirk AC-3940-47 and PSE-Y37 specifications.
What are the signs of a failing flame sensor?
Technicians typically observe short-cycling, where the burner ignites but shuts down within seconds, often indicating that the sensor can no longer detect the microamp signal.
How do I install the AC-3940-47 Flame Sensor Kit?
After isolating power and gas, remove the mounting screw and existing sensor. Install the new component, ensuring the rod is positioned at least 0.5 inches into the internal flame path without touching any metal structures.
Is the AC-3940-47 compatible with multiple brands?
Yes, while primary to Utica-Dunkirk gas-fired appliances, this genuine OEM replacement is also compatible with specific Haier HVAC models and replaces part number PSE-Y37.
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.
