OEM Carrier Flame Sensor for PG8MAA048110ACJA Gas Furnace Rod

The flame sensor is a thin metal rod that confirms the burners have actually lit on your Carrier PG8MAA048110ACJA furnace. It works by flame rectification — a tiny microamp current passes through the flame to the rod, telling the control board that gas is truly burning. When the sensor becomes coated with carbon and oxide or fails outright, the board can no longer detect the flame and closes the gas valve as a safety measure. The classic symptom is a furnace that lights for 3–7 seconds, then drops the burners and short-cycles — igniting, cutting out, and retrying repeatedly with no sustained heat. Specs: This is a single-rod flame rectification sensor with a high-temperature ceramic insulator and a stainless/Kanthal probe. It carries a microamp-level flame signal — typically 1–6 µA on a healthy flame, and the board drops out below roughly 0.5 µA. The rod length and bend are matched to seat correctly in the burner flame path. OEM vs Generic: A flame sensor must sit at the precise position and angle in the flame to generate adequate microamps. OEM Carrier sensors have the correct rod length, bend, and insulator so the signal stays well above the board's dropout threshold. Generic rods often use thinner or differently positioned probes that produce a marginal signal — the furnace may work briefly, then fail intermittently as conditions change, causing the same short-cycling you're trying to fix. Install (Difficulty 1/5): Tools: 1/4" nut driver. #1 SAFETY: Turn OFF the gas supply and shut off power at the breaker before removing the sensor. Do not aggressively sand a new sensor — the factory finish is meant to stay. 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 PG8MAA048110ACJA. 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.