OEM Carrier Flame Sensor for PG8DAA024070ADJA Packaged Gas Furnace

The flame sensor is the safety device that proves your Carrier PG8DAA024070ADJA has actually lit a burner flame. It uses flame rectification — passing a tiny microamp DC current through the flame — to tell the control board the burners are burning. When the sensor is coated in oxide or silica, that current drops and the board shuts the gas valve within seconds as a safety response. The classic symptom is short-cycling on heat: the furnace lights, runs 3–7 seconds, then shuts off, often repeating until it locks out and leaves you with cold air from the registers. This is a single-rod flame-rectification sensor with a Kanthal/stainless rod and a ceramic insulator base. A healthy sensor passes roughly 1.5–6 microamps DC in flame; below about 0.5 µA the board drops out. Confirm the rod length, bend orientation, and bracket/connector style against your OEM part — Carrier uses several rod geometries across the PG8 line, and a mismatched rod won't sit correctly in the flame envelope. For a flame sensor, OEM geometry is everything. A generic rod that sits too high or too shallow in the flame reads a weak signal even when the burner is firing perfectly, causing nuisance lockouts. Lower-grade alloys also oxidize faster, so a cheap sensor fouls and fails again within months. The OEM rod is positioned to sit in the hottest, most ionized part of the flame for a strong, stable signal. Install difficulty: 1/5. Tools: 1/4" nut driver, fine emery cloth or scotch pad, multimeter set to DC microamps. #1 safety warning: TURN OFF THE GAS and the breaker before servicing — you are working at the burners. Never sand a sensor with steel wool, which leaves conductive residue. 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 PG8DAA024070ADJA. 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.