
Resideo Q390A1103 Thermocouple
The Resideo Q390A1103 is a heavy-duty 30mV thermocouple designed for reliable flame sensing in standing pilot gas-fired heating systems. This 48-inch lead assembly is engineered to monitor the pilot flame, generating a consistent open circuit output between 26mV and 32mV to maintain the safety circuit of the Pilotstat safety control power unit. Built for versatility, this model serves as a direct replacement for various residential and commercial furnace, boiler, and water heater applications. It features a rugged construction rated for hot junction temperatures up to 1400°F and cold junction temperatures up to 780°F, ensuring stable millivolt generation in high-heat environments. The inclusion of a push-in clip and an adapter assembly allows for seamless integration into Q303, Q308, Q314, and Q327 pilot burners. With a 0.03-ohm internal resistance and a precision-threaded 11/32-32 male connector nut, this component ensures low-resistance electrical continuity for optimal burner performance.
Key Benefits- Universal Compatibility: Includes an adapter assembly and push-in clip for fast mounting in multiple pilot burner styles.
- High-Temperature Durability: Rated for a 1400°F hot junction to withstand continuous flame exposure without signal degradation.
- Optimized Signal: Delivers a reliable 26-32mV output to keep gas valves open and prevent nuisance shutdowns.
- Extended Reach: The 48-inch lead length provides flexibility for larger equipment cabinets and complex routing.
- Standardized Connection: Features an 11/32-32 male connector nut for a secure fit into industry-standard safety power units.
Is the Q390A1103 compatible with LP and Natural Gas?
Yes, this thermocouple is designed for use in equipment powered by both Liquid Propane (LP) and Natural Gas.
What is the benefit of the included adapter?
The adapter assembly allows the thermocouple to be used in various pilot burner brands beyond Resideo, making it an essential part for service truck stock.
How do I know if the millivolt signal is sufficient?
Check the open circuit output with a multimeter; it should fall within the 26mV to 32mV range. If the reading is lower, the thermocouple may need replacement or the pilot flame may need adjustment.
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: $11.82
-65%$11.82
$4.14Resideo Q390A1103 Thermocouple
The Resideo Q390A1103 is a heavy-duty 30mV thermocouple designed for reliable flame sensing in standing pilot gas-fired heating systems. This 48-inch lead assembly is engineered to monitor the pilot flame, generating a consistent open circuit output between 26mV and 32mV to maintain the safety circuit of the Pilotstat safety control power unit. Built for versatility, this model serves as a direct replacement for various residential and commercial furnace, boiler, and water heater applications. It features a rugged construction rated for hot junction temperatures up to 1400°F and cold junction temperatures up to 780°F, ensuring stable millivolt generation in high-heat environments. The inclusion of a push-in clip and an adapter assembly allows for seamless integration into Q303, Q308, Q314, and Q327 pilot burners. With a 0.03-ohm internal resistance and a precision-threaded 11/32-32 male connector nut, this component ensures low-resistance electrical continuity for optimal burner performance.
Key Benefits- Universal Compatibility: Includes an adapter assembly and push-in clip for fast mounting in multiple pilot burner styles.
- High-Temperature Durability: Rated for a 1400°F hot junction to withstand continuous flame exposure without signal degradation.
- Optimized Signal: Delivers a reliable 26-32mV output to keep gas valves open and prevent nuisance shutdowns.
- Extended Reach: The 48-inch lead length provides flexibility for larger equipment cabinets and complex routing.
- Standardized Connection: Features an 11/32-32 male connector nut for a secure fit into industry-standard safety power units.
Is the Q390A1103 compatible with LP and Natural Gas?
Yes, this thermocouple is designed for use in equipment powered by both Liquid Propane (LP) and Natural Gas.
What is the benefit of the included adapter?
The adapter assembly allows the thermocouple to be used in various pilot burner brands beyond Resideo, making it an essential part for service truck stock.
How do I know if the millivolt signal is sufficient?
Check the open circuit output with a multimeter; it should fall within the 26mV to 32mV range. If the reading is lower, the thermocouple may need replacement or the pilot flame may need adjustment.
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
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Description
The Resideo Q390A1103 is a heavy-duty 30mV thermocouple designed for reliable flame sensing in standing pilot gas-fired heating systems. This 48-inch lead assembly is engineered to monitor the pilot flame, generating a consistent open circuit output between 26mV and 32mV to maintain the safety circuit of the Pilotstat safety control power unit. Built for versatility, this model serves as a direct replacement for various residential and commercial furnace, boiler, and water heater applications. It features a rugged construction rated for hot junction temperatures up to 1400°F and cold junction temperatures up to 780°F, ensuring stable millivolt generation in high-heat environments. The inclusion of a push-in clip and an adapter assembly allows for seamless integration into Q303, Q308, Q314, and Q327 pilot burners. With a 0.03-ohm internal resistance and a precision-threaded 11/32-32 male connector nut, this component ensures low-resistance electrical continuity for optimal burner performance.
Key Benefits- Universal Compatibility: Includes an adapter assembly and push-in clip for fast mounting in multiple pilot burner styles.
- High-Temperature Durability: Rated for a 1400°F hot junction to withstand continuous flame exposure without signal degradation.
- Optimized Signal: Delivers a reliable 26-32mV output to keep gas valves open and prevent nuisance shutdowns.
- Extended Reach: The 48-inch lead length provides flexibility for larger equipment cabinets and complex routing.
- Standardized Connection: Features an 11/32-32 male connector nut for a secure fit into industry-standard safety power units.
Is the Q390A1103 compatible with LP and Natural Gas?
Yes, this thermocouple is designed for use in equipment powered by both Liquid Propane (LP) and Natural Gas.
What is the benefit of the included adapter?
The adapter assembly allows the thermocouple to be used in various pilot burner brands beyond Resideo, making it an essential part for service truck stock.
How do I know if the millivolt signal is sufficient?
Check the open circuit output with a multimeter; it should fall within the 26mV to 32mV range. If the reading is lower, the thermocouple may need replacement or the pilot flame may need adjustment.
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.












