
Resideo Q390A1095 Thermocouple
For service technicians maintaining standing pilot gas systems, the Resideo Q390A1095 Thermocouple is a field-proven 18-inch sensor designed for consistent millivolt generation. This heavy-duty thermocouple features a 30mV nominal voltage rating, delivering a reliable 26mV to 32mV open circuit output to ensure the Pilotstat safety control power unit remains energized. Engineered with a low 0.02 Ohms resistance, it minimizes voltage drop, maintaining system stability even under high-demand cycles. The assembly includes a 11/32-32 male connector nut and a universal adapter and push-in clip, facilitating rapid installation across various burner configurations. Rated for a 1400°F (760°C) hot junction and a 780°F (416°C) cold junction, this 18-inch thermocouple is built to withstand the rigorous thermal environments of standing pilot heating systems using natural or liquid propane gas. This is a critical HVAC replacement part for ensuring pilot flame safety and preventing fuel flow interruptions.
Key Benefits
- Universal Compatibility: Includes an adapter and push-in clip to fit a wide range of pilot burners, reducing the need for multiple SKUs.
- Optimized Output: Provides a stable 30 millivolt output to ensure safety valves stay open during operation.
- High Heat Resistance: Durable build quality supports 1400°F hot junction temperatures for long-term reliability in the combustion chamber.
- Low Internal Resistance: At just 0.02 ohms, it ensures maximum energy transfer from the heat source to the control unit.
Common Questions
What systems are compatible with the Q390A1095?
This thermocouple is designed for gas-fired heating systems utilizing a standing pilot and is compatible with Resideo Q303, Q308, Q314, Q324, and Q327 pilot burners using the included universal adapter.
Does this unit work with both LP and Natural Gas?
Yes, it is engineered to function reliably with both natural gas and liquid propane standing pilot configurations.
How do I know if the thermocouple is failing?
Technicians should check for an open circuit output; if the reading falls below the 26mV-32mV range while the pilot is lit, or if the safety valve fails to hold, the sensor likely needs replacement.
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: $7.30
-65%$7.30
$2.55Resideo Q390A1095 Thermocouple
For service technicians maintaining standing pilot gas systems, the Resideo Q390A1095 Thermocouple is a field-proven 18-inch sensor designed for consistent millivolt generation. This heavy-duty thermocouple features a 30mV nominal voltage rating, delivering a reliable 26mV to 32mV open circuit output to ensure the Pilotstat safety control power unit remains energized. Engineered with a low 0.02 Ohms resistance, it minimizes voltage drop, maintaining system stability even under high-demand cycles. The assembly includes a 11/32-32 male connector nut and a universal adapter and push-in clip, facilitating rapid installation across various burner configurations. Rated for a 1400°F (760°C) hot junction and a 780°F (416°C) cold junction, this 18-inch thermocouple is built to withstand the rigorous thermal environments of standing pilot heating systems using natural or liquid propane gas. This is a critical HVAC replacement part for ensuring pilot flame safety and preventing fuel flow interruptions.
Key Benefits
- Universal Compatibility: Includes an adapter and push-in clip to fit a wide range of pilot burners, reducing the need for multiple SKUs.
- Optimized Output: Provides a stable 30 millivolt output to ensure safety valves stay open during operation.
- High Heat Resistance: Durable build quality supports 1400°F hot junction temperatures for long-term reliability in the combustion chamber.
- Low Internal Resistance: At just 0.02 ohms, it ensures maximum energy transfer from the heat source to the control unit.
Common Questions
What systems are compatible with the Q390A1095?
This thermocouple is designed for gas-fired heating systems utilizing a standing pilot and is compatible with Resideo Q303, Q308, Q314, Q324, and Q327 pilot burners using the included universal adapter.
Does this unit work with both LP and Natural Gas?
Yes, it is engineered to function reliably with both natural gas and liquid propane standing pilot configurations.
How do I know if the thermocouple is failing?
Technicians should check for an open circuit output; if the reading falls below the 26mV-32mV range while the pilot is lit, or if the safety valve fails to hold, the sensor likely needs replacement.
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.
Product Information
Product Information
Shipping & Returns
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Description
For service technicians maintaining standing pilot gas systems, the Resideo Q390A1095 Thermocouple is a field-proven 18-inch sensor designed for consistent millivolt generation. This heavy-duty thermocouple features a 30mV nominal voltage rating, delivering a reliable 26mV to 32mV open circuit output to ensure the Pilotstat safety control power unit remains energized. Engineered with a low 0.02 Ohms resistance, it minimizes voltage drop, maintaining system stability even under high-demand cycles. The assembly includes a 11/32-32 male connector nut and a universal adapter and push-in clip, facilitating rapid installation across various burner configurations. Rated for a 1400°F (760°C) hot junction and a 780°F (416°C) cold junction, this 18-inch thermocouple is built to withstand the rigorous thermal environments of standing pilot heating systems using natural or liquid propane gas. This is a critical HVAC replacement part for ensuring pilot flame safety and preventing fuel flow interruptions.
Key Benefits
- Universal Compatibility: Includes an adapter and push-in clip to fit a wide range of pilot burners, reducing the need for multiple SKUs.
- Optimized Output: Provides a stable 30 millivolt output to ensure safety valves stay open during operation.
- High Heat Resistance: Durable build quality supports 1400°F hot junction temperatures for long-term reliability in the combustion chamber.
- Low Internal Resistance: At just 0.02 ohms, it ensures maximum energy transfer from the heat source to the control unit.
Common Questions
What systems are compatible with the Q390A1095?
This thermocouple is designed for gas-fired heating systems utilizing a standing pilot and is compatible with Resideo Q303, Q308, Q314, Q324, and Q327 pilot burners using the included universal adapter.
Does this unit work with both LP and Natural Gas?
Yes, it is engineered to function reliably with both natural gas and liquid propane standing pilot configurations.
How do I know if the thermocouple is failing?
Technicians should check for an open circuit output; if the reading falls below the 26mV-32mV range while the pilot is lit, or if the safety valve fails to hold, the sensor likely needs replacement.
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.












