OEM Carrier Flame Sensor Rod for PG9MAB060140ACSA Gas Furnace

The flame sensor is a single metal rod that sits in the burner flame and proves to the control board that a flame is actually present after ignition. It works by flame rectification — the lit burner conducts a tiny DC microamp current through the rod to ground. When the rod gets coated in oxide or the signal drops too low, your Carrier PG9MAB060140ACSA will light for a few seconds and then shut down, cycling on and off repeatedly (short-cycling) while the diagnostic LED flashes a 'flame not sensed' code. Homeowners usually notice the burner igniting, a whoosh of heat, then the flame snuffing out within 2-7 seconds, over and over with no sustained heat. This OEM flame sensor uses a Kanthal-style high-temperature sensing rod and a porcelain insulator rated to withstand continuous burner heat without cracking. A healthy flame signal on this furnace typically reads 1-6 microamps DC; below roughly 0.5 µA the board will refuse to hold the gas valve open. The OEM rod length and bend are sized to sit correctly in the flame envelope of the ACSA burner assembly. Generic sensors often use thinner rods and cheaper insulators that build oxide faster, crack under heat, or sit at the wrong depth — all of which produce weak microamp readings and nuisance lockouts. The correctly dimensioned OEM rod gives a clean, stable signal so the furnace stays lit. Install difficulty: 1/5. Tools needed: 1/4" nut driver and fine emery cloth to clean the burner ground area; a multimeter set to microamps DC helps verify the new reading. #1 safety warning: turn off the gas supply and shut off power at the breaker before removing the sensor from the burner box. 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 PG9MAB060140ACSA. 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.