OEM Carrier Gas Furnace Flame Sensor Rod for PG8MAA024070AAJA

The flame sensor is a single metal rod that sits in the burner flame and proves to the control board that ignition actually happened. It uses flame rectification — the flame conducts a tiny microamp current that tells the board it's safe to keep the gas valve open. On your Carrier PG8MAA024070AAJA, a dirty, oxidized, or failed flame sensor is the single most common cause of a furnace that lights for a few seconds and then shuts off. You'll notice the burners ignite, run 2–7 seconds, then go out, followed by the inducer cycling and repeated re-ignition attempts before the board locks out and the blower kicks on with cold air. After several lockouts the furnace stops trying entirely and you get no heat. This OEM Kanthal/stainless rod is sized with the correct length, bend, and ceramic insulator to position precisely in the PG8MAA burner flame for a stable microamp signal. A healthy sensor reads roughly 1–6 µA of flame current; below about 0.5 µA the board will drop out. Why OEM matters: generic rods often use thinner wire and lower-grade insulators that oxidize faster and sit at the wrong depth in the flame, giving a marginal signal that triggers intermittent dropouts — exactly the failure you're trying to fix. The OEM rod's geometry and alloy hold a clean signal far longer. Install difficulty: 1/5. Tools: 1/4" nut driver, fine sandpaper or emery cloth, and a multimeter set to microamps to verify flame current. #1 safety warning: TURN OFF GAS and power before removing the sensor at the burner assembly. 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 PG8MAA024070AAJA. 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.