OEM Carrier Flame Sensor for PG8JAA048070ADJA Package Gas Furnace

The flame sensor in your Carrier PG8JAA048070ADJA package unit is the safety device that proves a flame is actually present after ignition. It uses flame rectification — passing a tiny microamp DC current through the flame to ground — so the control board knows it is safe to keep the gas valve open. When the sensor is dirty, cracked, or worn, the furnace lights for a few seconds and then shuts off, repeating the cycle three or four times before locking out. Homeowners notice short-cycling, cold air from the registers, and a furnace that ignites but won't stay running on the coldest days. This is a single-rod oxidation-resistant flame rod with a porcelain insulator and a spade or screw terminal sized for the PG8JAA burner assembly. A healthy sensor delivers a flame-signal current in the 1–6 microamp range; below roughly 0.5 µA the board drops the gas valve. The rod length and mounting bracket are matched so the tip sits correctly in the burner flame. Generic flame rods are often made from lower-grade alloys that oxidize faster and read a weaker, drifting microamp signal — which the board interprets as flame loss, causing premature lockouts even when the rod looks clean. OEM ensures correct rod geometry and a stable signal your control board can trust. Install difficulty: 1 of 5 — one of the easiest furnace repairs. Tools needed: 1/4" nut driver, fine steel wool or emery cloth, and a multimeter set to DC microamps to verify flame signal. #1 safety warning: turn off the gas at the unit shutoff and kill the breaker before removing the sensor near the 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 PG8JAA048070ADJA. 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.