OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
The flame sensor is a single metal rod in the burner assembly that verifies a flame is actually present after the igniter lights the gas. It relies on flame rectification — a small microamp DC current flows from the rod, through the flame, to ground. When the rod becomes oxidized, sooted, or cracked, the control board loses that signal and shuts the gas valve within seconds to prevent unburned gas from accumulating. The homeowner sees the burners light for a few seconds and then go out (short-cycling), hears repeated ignition clicks, gets lukewarm or cold air, or experiences a full lockout with no heat after several failed attempts. A healthy Carrier flame sensor reads a flame current of roughly 1-6 microamps DC, with lockout occurring below about 0.5 µA. The sensing rod is a high-temperature Kanthal/stainless alloy chosen to resist scaling under constant flame exposure, and the OEM rod length, bend angle, and ceramic insulator are matched to the PY2PEB burner so the tip sits precisely within the flame. OEM matters because generic sensors commonly use thinner rod material and lower-grade ceramic insulators that oxidize quickly and deliver a weak, drifting microamp signal — causing nuisance lockouts even when combustion is perfectly normal. A genuine rod restores a strong, stable flame-current reading. Install difficulty: 2/5. Tools needed: 1/4" nut driver, fine emery cloth or steel wool, and a multimeter that reads DC microamps. #1 safety warning: shut off the gas supply and kill power at the furnace disconnect switch 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.
This part is compatible with Carrier model PY2PEB060090AB. Always verify the part number against your unit's data plate before ordering.
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.
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.