Trane SEN1809 Temp Sensor
When you're troubleshooting a lockout or erratic discharge air temperature on a Trane or American Standard unit, a failing thermistor is often the culprit. The Trane SEN1809 is a genuine OEM thermistor temperature sensor designed specifically for a 3/4" tube mount. This NTC (Negative Temperature Coefficient) sensor provides high-accuracy resistance feedback to the control board, ensuring the system maintains precise setpoints and avoids coil freeze-ups or overheat conditions. Built to withstand the harsh environment of a refrigerant line, it features a specialized mounting clip for 3/4 inch tubing that ensures optimal thermal contact for real-time data transmission.
The SEN1809 temp sensor is a standard 24V component compatible with a wide range of Trane air handlers and furnaces, including several TAM, GAM, and S9-series models. With a temperature operating range from -40°F to 185°F, it is a reliable replacement for older Trane SEN01809 or SEN-1809 part numbers. This is a critical HVAC replacement part for contractors who need to restore factory-spec performance to residential or light commercial split systems without the headache of universal sensors that don't clip securely to the suction or liquid lines.
Key Benefits for the Technician- Precision Calibration: Provides exact ohmic values to the system controller, preventing error codes like "Sensor Out of Range."
- OEM Snap-On Fit: The integrated 3/4" tube clip eliminates the need for thermal paste or zip ties, ensuring a secure, professional fit.
- Broad Compatibility: Directly replaces Trane SEN01809 and is verified for use in Trane/American Standard units like the TAM7, TAM8, and S9V2 series.
- Industrial Durability: Engineered for 24V, 50/60Hz operations with moisture-resistant housing to prevent sensor drift in high-humidity air handlers.
How do I verify if the SEN1809 is faulty?
Disconnect the sensor and measure its resistance with a multimeter. At 77°F (25°C), the resistance should match the standard Trane 10k ohm thermistor curve. If you see "Open" or "Short," the sensor has failed and requires immediate replacement to restore system communication.
Is this sensor compatible with 1/2" or 7/8" copper lines?
No, the SEN1809 is specifically engineered for 3/4" tube applications. Using it on smaller or larger lines will result in poor thermal transfer and inaccurate temperature readings, which can cause the control board to cycle the compressor improperly.
Where is this sensor typically located in an air handler?
It is most commonly used as a coil temperature sensor or a discharge air sensor. Look for it clipped directly to the copper headers or the 3/4 inch tubing near the evaporator or heat exchanger assembly.
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: $19.23
-65%$19.23
$6.73Trane SEN1809 Temp Sensor
When you're troubleshooting a lockout or erratic discharge air temperature on a Trane or American Standard unit, a failing thermistor is often the culprit. The Trane SEN1809 is a genuine OEM thermistor temperature sensor designed specifically for a 3/4" tube mount. This NTC (Negative Temperature Coefficient) sensor provides high-accuracy resistance feedback to the control board, ensuring the system maintains precise setpoints and avoids coil freeze-ups or overheat conditions. Built to withstand the harsh environment of a refrigerant line, it features a specialized mounting clip for 3/4 inch tubing that ensures optimal thermal contact for real-time data transmission.
The SEN1809 temp sensor is a standard 24V component compatible with a wide range of Trane air handlers and furnaces, including several TAM, GAM, and S9-series models. With a temperature operating range from -40°F to 185°F, it is a reliable replacement for older Trane SEN01809 or SEN-1809 part numbers. This is a critical HVAC replacement part for contractors who need to restore factory-spec performance to residential or light commercial split systems without the headache of universal sensors that don't clip securely to the suction or liquid lines.
Key Benefits for the Technician- Precision Calibration: Provides exact ohmic values to the system controller, preventing error codes like "Sensor Out of Range."
- OEM Snap-On Fit: The integrated 3/4" tube clip eliminates the need for thermal paste or zip ties, ensuring a secure, professional fit.
- Broad Compatibility: Directly replaces Trane SEN01809 and is verified for use in Trane/American Standard units like the TAM7, TAM8, and S9V2 series.
- Industrial Durability: Engineered for 24V, 50/60Hz operations with moisture-resistant housing to prevent sensor drift in high-humidity air handlers.
How do I verify if the SEN1809 is faulty?
Disconnect the sensor and measure its resistance with a multimeter. At 77°F (25°C), the resistance should match the standard Trane 10k ohm thermistor curve. If you see "Open" or "Short," the sensor has failed and requires immediate replacement to restore system communication.
Is this sensor compatible with 1/2" or 7/8" copper lines?
No, the SEN1809 is specifically engineered for 3/4" tube applications. Using it on smaller or larger lines will result in poor thermal transfer and inaccurate temperature readings, which can cause the control board to cycle the compressor improperly.
Where is this sensor typically located in an air handler?
It is most commonly used as a coil temperature sensor or a discharge air sensor. Look for it clipped directly to the copper headers or the 3/4 inch tubing near the evaporator or heat exchanger assembly.
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
When you're troubleshooting a lockout or erratic discharge air temperature on a Trane or American Standard unit, a failing thermistor is often the culprit. The Trane SEN1809 is a genuine OEM thermistor temperature sensor designed specifically for a 3/4" tube mount. This NTC (Negative Temperature Coefficient) sensor provides high-accuracy resistance feedback to the control board, ensuring the system maintains precise setpoints and avoids coil freeze-ups or overheat conditions. Built to withstand the harsh environment of a refrigerant line, it features a specialized mounting clip for 3/4 inch tubing that ensures optimal thermal contact for real-time data transmission.
The SEN1809 temp sensor is a standard 24V component compatible with a wide range of Trane air handlers and furnaces, including several TAM, GAM, and S9-series models. With a temperature operating range from -40°F to 185°F, it is a reliable replacement for older Trane SEN01809 or SEN-1809 part numbers. This is a critical HVAC replacement part for contractors who need to restore factory-spec performance to residential or light commercial split systems without the headache of universal sensors that don't clip securely to the suction or liquid lines.
Key Benefits for the Technician- Precision Calibration: Provides exact ohmic values to the system controller, preventing error codes like "Sensor Out of Range."
- OEM Snap-On Fit: The integrated 3/4" tube clip eliminates the need for thermal paste or zip ties, ensuring a secure, professional fit.
- Broad Compatibility: Directly replaces Trane SEN01809 and is verified for use in Trane/American Standard units like the TAM7, TAM8, and S9V2 series.
- Industrial Durability: Engineered for 24V, 50/60Hz operations with moisture-resistant housing to prevent sensor drift in high-humidity air handlers.
How do I verify if the SEN1809 is faulty?
Disconnect the sensor and measure its resistance with a multimeter. At 77°F (25°C), the resistance should match the standard Trane 10k ohm thermistor curve. If you see "Open" or "Short," the sensor has failed and requires immediate replacement to restore system communication.
Is this sensor compatible with 1/2" or 7/8" copper lines?
No, the SEN1809 is specifically engineered for 3/4" tube applications. Using it on smaller or larger lines will result in poor thermal transfer and inaccurate temperature readings, which can cause the control board to cycle the compressor improperly.
Where is this sensor typically located in an air handler?
It is most commonly used as a coil temperature sensor or a discharge air sensor. Look for it clipped directly to the copper headers or the 3/4 inch tubing near the evaporator or heat exchanger assembly.
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.
