OEM Carrier Flame Sensor for PY1RPA090180ACWA Gas Furnace

The flame sensor is the safety device that proves your burners actually lit. After the igniter glows and the gas valve opens, this thin metal rod sits in the flame and generates a tiny microamp current through flame rectification. The control board reads that current as proof of flame. When the sensor fails or fouls, the board sees no flame signal and shuts the gas valve within seconds — so the classic symptom on this PY1RPA090180ACWA is a furnace that lights, runs for 3-7 seconds, then drops out and short-cycles repeatedly. Homeowners notice the blower kicking on with no heat, the burners igniting then dying, and lockouts after several failed tries. This is a single-rod rectification flame sensor with a Kanthal/stainless probe rated for continuous immersion in flame and a ceramic insulator that isolates the rod from the bracket. A healthy sensor delivers roughly 1-6 microamps DC; readings under ~0.5 µA mean replacement. The OEM unit matches Carrier's exact rod length, bend, and mounting bracket so it sits at the correct depth in the burner flame. Why OEM matters here: generic rods are often the wrong length or angle, so they sit at the edge of the flame and produce a weak, drifting signal that causes intermittent nuisance lockouts that are maddening to diagnose. OEM geometry guarantees full flame immersion and a stable microamp reading. Install difficulty: 2/5. Tools: 1/4" nut driver, fine emery cloth or Scotch-Brite, and a multimeter set to microamps for verification. #1 safety warning: turn off the gas at the valve and kill the furnace power at the breaker before removing the sensor. 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 PY1RPA090180ACWA. 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.