OEM Carrier Flame Sensor for PG8DAA024050AAJA Gas Furnace Unit

The flame sensor in your Carrier PG8DAA024050AAJA gas furnace is a single metal rod that confirms a flame is actually present after the igniter fires. It works by flame rectification — a tiny microamp current flows through the flame to ground, telling the control board it is safe to keep the gas valve open. When the rod becomes coated with oxide or carbon, that signal drops and the board shuts the gas off as a safety measure. The classic symptom is a furnace that lights for a few seconds then shuts down, repeating in a frustrating short-cycle, usually with a flame-sense fault code and no sustained heat. This is a silicon single-rod flame sensor, not an igniter, so it does not glow; it simply conducts. A healthy circuit reads roughly 1-6 microamps of flame current. The mounting bracket and rod geometry are matched to this furnace's burner position, so fit and flame contact are critical. OEM matters because the sensor rod alloy and length determine how strong and stable the microamp signal is. Generic sensors often use thinner or different-alloy rods that foul faster and read low, returning you to the same short-cycling problem within months. Install difficulty: 1 of 5. Tools needed: 1/4-inch or 5/16-inch nut driver and fine emery cloth if you are inspecting before replacing. Number-one safety warning: turn off the gas supply and shut off electrical power at the breaker before removing the sensor, and never sand a new OEM rod aggressively. 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 PG8DAA024050AAJA. 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.