OEM Carrier Flame Sensor for PG8JAA048070ACJA Package Gas Furnace

The flame sensor in your Carrier PG8JAA048070ACJA package unit is the safety component that proves the burner flame is lit after ignition. Through flame rectification it passes a small microamp DC current through the flame to ground, telling the control board it is safe to hold the gas valve open. As the rod oxidizes or cracks, the furnace lights briefly then shuts down, retries several times, and finally locks out. Homeowners typically report short-cycling, lukewarm or cold air from the vents, and a system that fires up but won't sustain heat when it's coldest outside. This is a single-rod, oxidation-resistant flame sensor with a porcelain insulator and a terminal sized for the PG8JAA burner assembly. A healthy sensor produces a flame-signal current of roughly 1–6 microamps; once the signal falls below about 0.5 µA the board treats it as flame loss and closes the gas valve. The rod length and bracket position the tip correctly in the flame envelope. Generic flame rods often use lesser alloys that oxidize quickly and return a weak, drifting signal, which triggers nuisance lockouts even after cleaning. An OEM sensor restores correct rod geometry and a stable microamp reading your control board can rely on. Install difficulty: 1 of 5 — among the simplest furnace fixes. Tools needed: 1/4" nut driver, fine steel wool or emery cloth for cleaning, and a multimeter set to DC microamps to confirm flame signal. #1 safety warning: shut off the gas at the unit valve and kill the breaker before removing the sensor near the live burners. 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 PG8JAA048070ACJA. 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.