OEM Carrier Flame Sensor Replacement for Furnace PG9MAA048080ADKA

The flame sensor is a thin metal rod that sits directly in the burner flame and confirms — through microamp flame rectification — that the gas actually ignited. When the rod gets coated with white silica/oxide buildup or develops a hairline crack, the control board can no longer "see" the flame and shuts the gas valve within a few seconds as a safety response. The classic symptom is short-cycling: the furnace lights, runs only 3–7 seconds, then shuts off and tries again; some homeowners just get no heat while the blower pushes cold air. This OEM flame sensor has the correct rod length, mounting bracket, and high-temperature ceramic insulator for this Carrier furnace. A healthy sensor reads a flame-rectification current of roughly 1–6 microamps DC (measured with a meter in series); below about 0.5 µA the board drops out and locks the furnace. The rod alloy and ceramic isolator are matched to the burner geometry so the tip sits correctly in the flame envelope. Generic sensors often use a thinner rod or a slightly different bend and length, so the tip rides the edge of the flame and reads a weak, unstable signal — causing nuisance lockouts on cold mornings when the flame burns leanest. Low-grade ceramic insulators also carbon-track and leak the signal to ground. OEM geometry and insulation deliver a steady, in-spec flame current. Install difficulty: 1/5. Tools needed: 1/4" nut driver, fine emery cloth or steel wool, and a multimeter for the microamp check. SAFETY: turn off the gas at the manual shutoff and kill furnace power before removing the sensor, and never bend the rod to "fit." Ships same business day from our stocked U.S. 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 PG9MAA048080ADKA. 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.