OEM Carrier Flame Sensor for PG8JAA066110AAJA Gas Furnace

The flame sensor proves that a flame is actually burning after your Carrier PG8JAA furnace ignites. It uses flame rectification to send a tiny microamp current back to the control board; if the board doesn't detect that current, it immediately closes the gas valve so raw gas can't accumulate. As the sensing rod fouls with carbon and oxide over time, the signal weakens and the furnace begins short-cycling — burners light for a few seconds, the flame signal drops below threshold, the valve closes, and the unit retries. After three or four failed tries the board locks out and you get cold air from the registers, repeated ignition clicking, and a furnace that runs without heating. This is a stainless steel Kanthal-style sensing rod on a ceramic insulator, built to sit continuously in the burner flame. A clean, healthy sensor reads roughly 1-6 microamps with a meter wired in series on the DC microamp scale; readings under about 0.5 µA will be rejected by the board. The bracket and single spade terminal match the OEM Carrier/Bryant mounting. Why OEM matters: aftermarket sensors frequently use thinner or lower-grade rod alloy that oxidizes faster, so the rectified signal degrades and you get nuisance lockouts within a heating season. The OEM rod geometry also keeps the tip correctly positioned in the flame for a strong, stable signal. Install difficulty: 2/5. Tools: 1/4" nut driver, fine emery cloth or a scotch pad to clean the rod, and a multimeter to verify microamps. #1 safety warning: turn off the furnace power AND shut the gas before removing the sensor near the burner assembly. Ships same business day from our stocked warehouse on orders before 3 PM CST. 1-year OEM warranty and 30-day hassle-free returns on uninstalled parts.

Compatibility

This part is compatible with Carrier model PG8JAA066110AAJA. Always verify the part number against your unit's data plate before ordering.

Why Choose OEM?

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.

Shipping & Returns

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.