OEM Carrier Flame Sensor for PG8JAA024070ABJA Gas/Electric Unit

The flame sensor is the safety device that confirms your PG8JAA actually lit. After the gas valve opens, the control board sends a tiny microamp current through the flame to ground (flame rectification); if it doesn't 'see' that current within a few seconds, it shuts the gas off and locks out. The classic failure symptom is a furnace that lights, burns for 3–7 seconds, then shuts down and tries again — short-cycling on ignition — usually because the sensor rod is coated with oxide and carbon and can no longer read the flame. You may also get a hard lockout with a flashing fault code after several failed tries. This is a single-rod flame-rectification sensor with a heat-rated ceramic insulator and a Kanthal/stainless rod sized to sit in the burner flame. A healthy sensor passes roughly 1–6 microamps of flame current; OEM geometry places the rod at the correct depth and angle for a stable signal. Why OEM matters here: a generic sensor with the wrong rod length or mounting angle sits in the wrong part of the flame and reads a weak, drifting microamp signal — causing the same nuisance lockouts you're trying to fix. Insulator grade matters too; cheap ceramics crack and ground out. Install difficulty: 1 of 5 — one screw and one spade connector. Tools: 1/4" nut driver, fine emery cloth (to clean during diagnosis), and a multimeter set to DC microamps to confirm flame current. SAFETY — turn off the gas and the furnace breaker before removing the sensor; never clean a sensor with abrasive grit that leaves 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 PG8JAA024070ABJA. 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.