OEM Carrier Flame Sensor Replacement Part for Model PY3PEA048090NA

The flame sensor is the safety probe that verifies your Carrier furnace's burners actually ignited after the igniter fires. Working by flame rectification, it conducts a tiny DC microamp current through the flame to ground, telling the control board the flame is present and safe to keep the gas valve open. When the rod oxidizes, gets coated with carbon, or cracks, that signal collapses and the board closes the gas valve within seconds. Homeowners notice this as short-cycling: the igniter glows, the burners light briefly, then shut off — over and over — followed by no heat and often a furnace lockout with a flashing diagnostic code. This flame sensor is matched to the PY3PEA048090NA platform. It is a single Kanthal-style sensing rod with a ceramic insulator and a push-on or screw terminal. A clean, healthy sensor produces a flame-rectification current in the 1-6 microamp range; readings under about 0.5 µA cause the board to drop out. Rod length, bend, and insulator must match the original so the tip sits in the hottest part of the flame. Why OEM matters: the precise rod geometry sets how the probe sits in the flame envelope, which determines signal strength. Generic sensors with off-spec length or thinner alloy rods read low, foul faster, and bring back nuisance lockouts within a season. The Carrier OEM sensor delivers the strong, stable microamp signal the board was designed around. Install difficulty: 1/5. Tools: 1/4" nut driver, fine emery cloth for cleaning the rod, and a multimeter capable of reading microamps DC. SAFETY: shut off the gas supply and kill power at the furnace disconnect before removing the sensor — never work near live burners with the gas on. Ships same business day from our stocked warehouse on orders placed before 3 PM CST. Covered by a 1-year OEM warranty with 30-day hassle-free returns on uninstalled parts.

Compatibility

This part is compatible with Carrier model PY3PEA048090NA. 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.