OEM Carrier Flame Sensor for PG9MAA036080AAKA 90% Gas Furnace

The flame sensor is a single metal rod that confirms the burners actually lit by reading the tiny microamp current that flame conducts to ground — a process called flame rectification — in your PG9MAA036080AAKA. When the rod is coated in oxide or carbon, the board can no longer see the flame and shuts the gas off for safety. The classic symptom is a furnace that lights for 3-7 seconds then shuts down, repeating and short-cycling, often locking out after several tries even though the burners visibly ignite each time. A flame sensor is a passive rod with no voltage rating; it is judged by the flame-rectification current it passes. A clean OEM sensor sitting in a good flame reads roughly 1-6 microamps DC, and below about 0.5 microamps the board drops out. Carrier sensors are matched by rod length, bend angle, and ceramic insulator so the tip sits correctly within the flame envelope. Sensor position is everything — a generic rod with the wrong length or bend sits too shallow in the flame and reads low microamps even when clean, causing the exact short-cycling it is meant to prevent. Cheaper alloys oxidize faster and need cleaning more often. This OEM Carrier sensor matches the rod geometry and high-temperature alloy so flame current stays in spec longer. Install difficulty: 1/5. Tools needed: 1/4" nut driver, fine emery cloth or a Scotch-Brite pad for cleaning, and a multimeter with microamp DC mode for testing. #1 SAFETY WARNING: turn off the gas and kill the breaker before removing the sensor. Never clean the rod with steel wool, which leaves conductive residue, and never bend the rod to reposition it — replace it instead. 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 PG9MAA036080AAKA. 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.