OEM Carrier Flame Sensor for PG8MAA024070ACJA Gas Furnace

The flame sensor in your Carrier PG8MAA024070ACJA is the safety device that proves a flame is actually present after the burners light. It generates a microamp current through the flame (flame rectification) and reports it to the control board; if that signal drops, the board shuts off the gas valve to prevent raw fuel from filling the heat exchanger. When the sensor is dirty, oxidized, or cracked, you'll see classic short-cycling: the furnace lights, runs for 3-7 seconds, then drops out and tries again. After several failed tries the board locks out and you get no heat, often with a flashing fault code on the control board. This is a single-rod silicon-coated steel sensor with a high-temperature porcelain insulator and a spade terminal. A healthy sensor reads in the open-loop megohm range when cold and should deliver roughly 1-6 microamps of flame current in operation; anything under ~0.5 microamps causes dropout. OEM rod length and bend angle position the tip correctly in the flame envelope. OEM matters here because aftermarket sensors often use thinner rods and lower-grade insulators that build oxide faster and warp in the burner heat, returning you to short-cycling within a season. The correct OEM geometry guarantees the rod sits in the hottest part of the flame for a strong, stable signal. Install difficulty: 2 of 5. Tools: 1/4" nut driver, fine emery cloth or steel wool, and a multimeter (microamp scale) to verify flame current. #1 safety warning: shut off the gas supply and kill power at the furnace disconnect before removing the sensor — never service burners with gas live. 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 PG8MAA024070ACJA. 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.