Honeywell Q340A1074 Thermocouple

When you are troubleshooting a standing pilot system that won't stay lit, the Honeywell Q340A1074 is the industry-standard solution for restoring reliable millivolt signal. This Universal 30mV Thermocouple is engineered for high-performance gas-fired heating applications, providing a consistent open circuit output between 26mV and 32mV. With a 24-inch lead length and a standard 11/32-32 male connector nut, it facilitates a secure connection to Pilotstat safety control power units. This unit is built to withstand extreme internal temperatures, featuring a hot junction rating of 1400°F and a cold junction rating of 780°F. If you are servicing older equipment, this model serves as the direct replacement for K15FS-24, ensuring a seamless drop-in fit without the need for manifold modifications. The low 0.02 Ohms resistance ensures maximum current transfer, making it a critical component for HVAC pilot burner repair and maintaining furnace safety controls in both residential and commercial settings.

• Universal Compatibility: Includes a push-in clip and adapter assembly, making it compatible with a wide range of pilot burner brackets.
• Optimized Performance: Maintains a 30mV nominal output to ensure the gas valve remains energized during standard operation.
• Durable Construction: The stainless steel outer jacket protects the internal elements from corrosive flue gases and high-heat environments.
• Field Readiness: Replaces common industry parts including Robertshaw 1980-24 and White-Rodgers H06E-24, reducing the need for multiple truck stock items.

What is the proper millivolt reading for this thermocouple?
Under a no-load open circuit test, you should see between 26mV and 32mV. If the reading drops below 18mV under load, the Honeywell Q340A1074 should be inspected for carbon buildup or replaced.

Can this be used with LP or Natural Gas?
Yes, this universal thermocouple is rated for use with both Liquefied Petroleum (LP) and Natural Gas standing pilot systems.

Does this replace the K15FS-24 exactly?
Yes, the Q340A1074 is the specified direct replacement for the K15FS-24, maintaining the same 24-inch length and electrical specifications required for compatibility.

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.