OEM Carrier Flame Sensor for PG8JAA048110ABJA Packaged Gas Furnace

The flame sensor is a thin metal rod positioned directly in the burner flame that verifies ignition through flame rectification — a small microamp current travels through the flame to ground and signals the control board that the burners are lit. When the rod fouls with oxide or carbon, or its ceramic insulator cracks, the board loses that signal and shuts the gas valve within seconds to prevent unburned gas from accumulating. Homeowners experience this as short-cycling: the burners light for a few seconds, then go out, often repeating several times before the furnace locks out and stops producing heat altogether. This is a single-rod flame rectification sensor with a high-temperature alloy probe and ceramic insulator base built to withstand continuous flame exposure. A properly functioning sensor reads a flame current of roughly 1 to 6 microamps DC; once it falls below about 0.5 µA the board drops the call for heat. It secures with a single hex screw and connects via a spade terminal. OEM matters because the probe alloy and insulator resistance are matched to Carrier's board sensitivity threshold. Aftermarket sensors frequently use a different alloy or thinner insulator that oxidizes quickly or leaks current to ground at temperature, causing intermittent, hard-to-trace flame dropouts. A genuine sensor delivers a stable microamp reading throughout its service life. Install difficulty: 2/5. Tools needed: 1/4" nut driver, a multimeter that reads DC microamps, and fine emery cloth for cleaning the rod. #1 safety warning: shut off the gas supply and cut 120V power at the furnace switch before removing the sensor. 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.

Compatibility

This part is compatible with Carrier model PG8JAA048110ABJA. 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.