OEM Carrier Flame Sensor for PG8MAA024070ADJA Gas Furnace Unit

The flame sensor is the small single-rod probe that confirms your Carrier PG8MAA furnace has actually lit. After the igniter glows and the gas valve opens, the control board sends a tiny microamp current through the flame to ground — proving flame is present. If the board can't read that current it closes the gas valve within seconds as a safety measure. The classic failure symptom is short-cycling on a call for heat: the burners light, run for 3-7 seconds, then shut off, and the cycle repeats. Homeowners often describe it as 'the furnace tries to start but won't stay lit,' especially after a season of oxidation builds an insulating layer on the rod. This genuine Carrier flame sensor uses a Kanthal (iron-chromium-aluminum) sensing rod with a high-temperature ceramic insulator rated to withstand direct flame impingement without cracking, plus the correct rod length and bend angle to sit properly in the burner flame. A healthy rod reads in the 4-6 microamp range; a worn or contaminated one drops below the board's roughly 0.5-1.0 µA threshold and triggers lockout. OEM matters because aftermarket rods frequently use thinner sensing wire or lower-grade insulators that oxidize faster and crack under thermal cycling, leading to repeat no-heat calls within months. The wrong rod length also sits outside the flame envelope and never reads reliably. Install difficulty: 1 of 5. Tools: 1/4" nut driver and fine emery cloth (avoid sandpaper, which leaves residue). #1 safety warning: TURN OFF THE GAS and kill power at the breaker before removing the sensor from the burner assembly. 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 PG8MAA024070ADJA. 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.