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The flame sensor is a single metal rod positioned directly in the burner flame to prove that the burners have actually ignited. It relies on flame rectification — the live flame conducts a small microamp current back to the control board, confirming the burners are lit. As the rod oxidizes, builds up carbon, or cracks, the board loses sight of the flame and closes the gas valve within seconds as a safety measure. The homeowner sees the furnace light for a moment and then quit (short-cycling), hears repeated ignition attempts, gets intermittent no-heat, or hits a lockout after three failed tries — frequently only a brief puff of warm air before the burners go out. This OEM-grade flame rod is calibrated to generate a steady 2–6 microamp signal in the flame, comfortably above the board's roughly 0.5 µA dropout point. The high-temperature ceramic insulator withstands continuous service at the burner, and the bracket, terminal, and rod bend match the Carrier/Bryant footprint so the tip sits at the correct depth and angle in the flame. Flame sensing is all about signal strength. Generic rods commonly use thinner or lower-grade alloy that oxidizes faster, so the microamp output decays below threshold within a season and the short-cycling comes right back. An incorrect length or bend places the tip outside the hottest flame zone, producing a weak signal the board keeps rejecting. The OEM rod holds both its current output and its geometry for reliable, repeatable ignition. Install difficulty: 2/5. Tools: 1/4" nut driver, fine emery cloth or steel wool to clean the tip, and a multimeter set to DC microamps to verify the signal. Safety: TURN OFF THE GAS and cut power at the furnace switch before removing the sensor — you are working at the burner assembly. Ships same business day from our stocked warehouse on orders placed before 3 PM CST. Backed by a 1-year OEM warranty and 30-day hassle-free returns on uninstalled parts.
This part is compatible with Carrier model PG8JAA060155ABJA. Always verify the part number against your unit's data plate before ordering.
OEM parts are manufactured to the exact factory specifications for your unit. Generic aftermarket alternatives may fit physically but often use lower-rated components that reduce equipment life and void manufacturer warranties. When the cost difference between OEM and generic is $10-30, the OEM part is always the smarter investment on a system worth $5,000-$15,000.
Same-day shipping on orders before 3 PM CST. Standard delivery 2-5 business days, express options available at checkout. 30-day hassle-free returns on uninstalled parts — free return shipping included. 1-year OEM factory warranty coverage.