OEM Carrier Flame Sensor Rod for PG9MXA036080AASA Gas Furnace

The flame sensor (flame rod) is how your Carrier PG9MXA036080AASA furnace proves the burners actually lit. The rod sits directly in the flame and uses flame rectification — the burning gas conducts a tiny microamp DC current to ground, signaling the control board to keep the gas valve open. As the sensor oxidizes and builds up a carbon and silica coating, that microamp signal drops, the board can no longer detect the flame, and it closes the gas valve within seconds as a safety response. The classic symptom is a furnace that lights normally, burns for 2 to 7 seconds, then shuts off and short-cycles — sometimes recovering for a few cycles before locking out completely. This is a genuine OEM flame sensor rod with a stainless/Kanthal sensing electrode and the correct ceramic insulator and bracket for a factory fit. A healthy flame-sense circuit usually reads roughly 1 to 6 microamps DC in the flame, often with a minimum near 0.5 to 1.0 microamps; a reading drifting toward zero confirms a fouled or failed rod. Correct rod length and position are critical so the electrode sits in the hottest part of the flame envelope. Flame rod geometry and metallurgy matter. A generic sensor of the wrong length or angle won't sit properly in the flame, producing a weak microamp signal and continued lockouts even when freshly cleaned. OEM guarantees the correct electrode material and position for a strong, stable signal cycle after cycle. Install difficulty: 1/5. Tools: 1/4-inch nut driver, fine emery cloth or Scotch-Brite to clean the rod, and a multimeter that reads DC microamps. SAFETY — shut off power at the breaker before removing the sensor, and handle the ceramic insulator by its base rather than touching the rod with bare fingers. Ships the same business day from our stocked U.S. warehouse on orders placed before 3 PM CST, backed by a 1-year OEM warranty. Returns are hassle-free for 30 days on uninstalled parts.

Compatibility

This part is compatible with Carrier model PG9MXA036080AASA. 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.