OEM Carrier Flame Sensor Replacement for Furnace PG9MAA048080ACKA

The flame sensor is a slender metal rod that sits in the burner flame and verifies — through microamp flame rectification — that the gas has actually lit. As it accumulates white silica/oxide buildup or develops a fine crack, the control board loses its flame signal and closes the gas valve within seconds as a protective measure. Homeowners usually notice short-cycling: the burners light, run only 3–7 seconds, then shut off and retry over and over; sometimes it presents as no heat with the blower circulating cold air. A dirty or weak sensor is one of the most common no-heat callbacks. This OEM flame sensor carries the correct rod length, mounting bracket, and high-temperature ceramic insulator for this Carrier furnace. A healthy sensor reads roughly 1–6 microamps DC of flame current (measured in series with a meter); drop below about 0.5 µA and the board locks out. The rod alloy and ceramic isolator are matched to the burner geometry so the tip lands in the proper part of the flame. Generic sensors frequently use a thinner rod or a slightly different length and bend, leaving the tip at the edge of the flame where it reads a weak, unstable signal — triggering nuisance lockouts on the coldest, leanest-burning mornings. Cheap ceramic insulators also carbon-track and bleed the signal to ground. OEM geometry and insulation hold a steady, in-spec microamp reading. Install difficulty: 1/5. Tools needed: 1/4" nut driver, fine emery cloth, and a multimeter for the microamp test. SAFETY: shut the gas off at the manual valve and cut furnace power before removing the sensor, and never bend the rod to make it 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 PG9MAA048080ACKA. 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.