Resideo Q313A1139 Thermopile Generator

The Resideo Q313A1139 Thermopile Generator is a critical component for maintaining stable operation in millivolt gas control systems. Engineered with multiple thermocouples connected in series, this 750mV thermopile converts thermal energy from the pilot flame into a self-sustaining electrical output. With an open circuit output range of 600mV to 750mV and an internal resistance of 2.89 Ohms, it provides the necessary voltage to engage automatic gas valves without external power. This replacement thermopile features a 35-inch lead length and spade terminal connections for precise integration into existing circuits. Designed for high-temperature environments, the hot junction is rated for up to 1400°F, while the cold junction maintains integrity up to 780°F. This unit is the standard professional choice for gas fireplace thermopile replacement and furnace pilot generator servicing, ensuring the safety and efficiency of gas-fired appliances through consistent millivolt production.

Key Benefits

• Broad Compatibility: Direct replacement for Resideo pilot burners including Q314, Q324, Q327, Q377, Q379, and Q382 models.
• Efficient Installation: Includes a push-in clip and is compatible with split nut or adapter assemblies to reduce time on the job site.
• Optimized Conductivity: Features 35-inch leads with spade terminals to ensure a low-resistance connection to the gas valve block.
• Industrial Durability: Rated for high-heat applications in both residential and commercial gas-fired equipment.
• Reliable Millivolt Output: Delivers a consistent 750 millivolt signal to prevent nuisance shutdowns of the pilot system.

Common Questions

What are the symptoms of a failing Resideo Q313A1139?
A weak or failing thermopile typically manifests as a pilot light that stays lit, but a main burner that fails to ignite or stay on. If your millivolt generator output drops below the minimum threshold (usually 325mV under load), the gas valve coil will not remain energized.

How do I test the voltage of this 750mV thermopile?
Using a multimeter set to the DC millivolt scale, measure the open circuit voltage across the spade terminals while the pilot is hitting the top 1/2 to 3/8 inch of the generator. You should see a reading between 600mV and 750mV.

Can this be used in LP and Natural Gas applications?
Yes, the Q313A1139 is fuel-agnostic; it functions based on the heat differential provided by the pilot flame, regardless of whether the appliance uses propane or natural gas.

Prop 65 Warning:
WARNING: Cancer and Reproductive Harm. See www.P65Warnings.ca.gov.

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.