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The flame sensor is a single metal rod seated directly in the burner flame, and its only job is to confirm that the burners actually lit. It works by flame rectification, passing a tiny microamp DC current through the flame to the integrated furnace control. When the rod oxidizes or burns out, the control can no longer verify flame and closes the gas valve almost immediately. On your PG96VAT66120DBAA that shows up as short-cycling: the furnace ignites, burns for a few seconds, drops out, and re-tries, often cycling several times before locking out with little to no heat at the vents. This OEM rod is built from a Kanthal-type FeCrAl high-temperature alloy rated for sustained 2,000F-plus burner exposure without rapid scaling. It delivers a clean rectified signal in the 1 to 6 microamp DC range, comfortably above the board's roughly 0.5 microamp minimum to prove flame. The ceramic insulator and spade terminal are sized for the PG96VAT burner box so the tip sits at the correct flame depth without adjustment. With flame sensors, OEM alloy and dimensions are what keep the signal stable. Aftermarket rods frequently use thinner or lower-grade metal that scales faster, sinking the microamp reading under the board threshold within months. A rod with the wrong tip length can read flame intermittently, producing frustrating nuisance lockouts that mimic a bad board or valve. Install difficulty: 2 of 5. Tools: a 1/4 in. or 5/16 in. nut driver, a multimeter that reads DC microamps to confirm the flame signal, and a non-abrasive cleaning pad. Top safety rule: cut power at the breaker AND close the manual gas shutoff before removing the burner-compartment panel. Ships the 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 PG96VAT66120DBAA. 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.