Reznor 272743 Flame Sensor
The Reznor 272743 Flame Sensor is a critical safety component designed for precise rectification in Reznor unit heaters and power-vented systems. This genuine Reznor OEM part is engineered to withstand the high-temperature environment of the combustion chamber, ensuring consistent flame signal detection for the ignition control board. As a veteran technician knows, a fouled or degraded sensor is a primary cause of short cycling and nuisance lockouts. This specific rod configuration provides reliable microamp feedback to the integrated controller, verifying flame presence within milliseconds of ignition. Replacing a worn or oxidized sensor with the 272743 ensures the system maintains peak operational efficiency while preventing hazardous unburned gas accumulation. Designed for direct compatibility with UDX, UDZ, and SDH series units, this sensor features a durable ceramic insulator and high-grade metal alloy rod to minimize carbon buildup and thermal stress over long-term furnace operation cycles.
Key Technical Benefits
- Optimized Conductivity: High-purity alloy rod ensures a stable flame rectification signal to prevent intermittent shutdowns.
- Direct OEM Fit: Ensures exact positioning within the burner assembly for Reznor heater troubleshooting.
- Reliable Ceramic Insulation: Prevents electrical leakage to the ground, maintaining signal integrity at high temperatures.
- Reduced Maintenance: Engineered for resistance against oxidation and soot accumulation.
Common Contractor Questions
What are the symptoms of a failing Reznor 272743 sensor?
The most common indicator is a furnace that ignites for several seconds and then shuts down, often resulting in a specific flash code on the control board for "low flame signal."
Can I clean this sensor instead of replacing it?
While cleaning with a non-abrasive pad can temporarily restore a signal, the 272743 should be replaced if the ceramic is cracked or the metal is severely pitted to ensure system reliability.
Is this sensor compatible with all Reznor power-vented units?
It is widely used across the Reznor V3 series, but you should always verify the specific part number against your unit’s wiring diagram or data plate.
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: $133.78
-65%$133.78
$46.82Reznor 272743 Flame Sensor
The Reznor 272743 Flame Sensor is a critical safety component designed for precise rectification in Reznor unit heaters and power-vented systems. This genuine Reznor OEM part is engineered to withstand the high-temperature environment of the combustion chamber, ensuring consistent flame signal detection for the ignition control board. As a veteran technician knows, a fouled or degraded sensor is a primary cause of short cycling and nuisance lockouts. This specific rod configuration provides reliable microamp feedback to the integrated controller, verifying flame presence within milliseconds of ignition. Replacing a worn or oxidized sensor with the 272743 ensures the system maintains peak operational efficiency while preventing hazardous unburned gas accumulation. Designed for direct compatibility with UDX, UDZ, and SDH series units, this sensor features a durable ceramic insulator and high-grade metal alloy rod to minimize carbon buildup and thermal stress over long-term furnace operation cycles.
Key Technical Benefits
- Optimized Conductivity: High-purity alloy rod ensures a stable flame rectification signal to prevent intermittent shutdowns.
- Direct OEM Fit: Ensures exact positioning within the burner assembly for Reznor heater troubleshooting.
- Reliable Ceramic Insulation: Prevents electrical leakage to the ground, maintaining signal integrity at high temperatures.
- Reduced Maintenance: Engineered for resistance against oxidation and soot accumulation.
Common Contractor Questions
What are the symptoms of a failing Reznor 272743 sensor?
The most common indicator is a furnace that ignites for several seconds and then shuts down, often resulting in a specific flash code on the control board for "low flame signal."
Can I clean this sensor instead of replacing it?
While cleaning with a non-abrasive pad can temporarily restore a signal, the 272743 should be replaced if the ceramic is cracked or the metal is severely pitted to ensure system reliability.
Is this sensor compatible with all Reznor power-vented units?
It is widely used across the Reznor V3 series, but you should always verify the specific part number against your unit’s wiring diagram or data plate.
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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Product Information
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Description
The Reznor 272743 Flame Sensor is a critical safety component designed for precise rectification in Reznor unit heaters and power-vented systems. This genuine Reznor OEM part is engineered to withstand the high-temperature environment of the combustion chamber, ensuring consistent flame signal detection for the ignition control board. As a veteran technician knows, a fouled or degraded sensor is a primary cause of short cycling and nuisance lockouts. This specific rod configuration provides reliable microamp feedback to the integrated controller, verifying flame presence within milliseconds of ignition. Replacing a worn or oxidized sensor with the 272743 ensures the system maintains peak operational efficiency while preventing hazardous unburned gas accumulation. Designed for direct compatibility with UDX, UDZ, and SDH series units, this sensor features a durable ceramic insulator and high-grade metal alloy rod to minimize carbon buildup and thermal stress over long-term furnace operation cycles.
Key Technical Benefits
- Optimized Conductivity: High-purity alloy rod ensures a stable flame rectification signal to prevent intermittent shutdowns.
- Direct OEM Fit: Ensures exact positioning within the burner assembly for Reznor heater troubleshooting.
- Reliable Ceramic Insulation: Prevents electrical leakage to the ground, maintaining signal integrity at high temperatures.
- Reduced Maintenance: Engineered for resistance against oxidation and soot accumulation.
Common Contractor Questions
What are the symptoms of a failing Reznor 272743 sensor?
The most common indicator is a furnace that ignites for several seconds and then shuts down, often resulting in a specific flash code on the control board for "low flame signal."
Can I clean this sensor instead of replacing it?
While cleaning with a non-abrasive pad can temporarily restore a signal, the 272743 should be replaced if the ceramic is cracked or the metal is severely pitted to ensure system reliability.
Is this sensor compatible with all Reznor power-vented units?
It is widely used across the Reznor V3 series, but you should always verify the specific part number against your unit’s wiring diagram or data plate.
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.
