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The flame sensor is a single-prong rectification rod that sits in the burner flame of your Carrier gas furnace. After the igniter lights the burners, this rod verifies an actual flame by conducting a tiny microamp current through the flame to ground. When the sensor fails or becomes coated with oxide and carbon, the control board can no longer confirm the flame and closes the gas valve within seconds as a safety measure. Homeowners typically notice the furnace lighting briefly then shutting off, repeated ignition retries, burners that glow and die after three to seven seconds, or no heat at all while the blower keeps running. A fouled or worn flame sensor is one of the most common no-heat service calls on these furnaces. This OEM sensor uses a high-nickel, flame-rated alloy rod with an OEM-spec porcelain insulator block that resists cracking at burner temperatures. A healthy rod produces a steady flame signal of roughly 1-6 microamps DC; readings below about 0.5 microamps indicate a worn or contaminated probe. The bracket and 1/4" male spade terminal match the original Carrier footprint exactly for proper fit and seating. Flame rectification depends on precise rod surface area and metallurgy. Generic rods often use lower-grade alloys that oxidize quickly, dropping the microamp signal below the board's threshold and causing nuisance lockouts within a single heating season. OEM rod geometry keeps the probe correctly positioned in the flame envelope, where off-spec aftermarket brackets produce weak, intermittent signals. Install difficulty: 2/5. Tools: 1/4" nut driver or 5/16" hex driver, and a multimeter set to microamps to verify signal. SAFETY: Turn off the gas supply and kill power at the furnace switch or breaker before servicing. Never bend the rod to clean it — replace it. 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 PY3PEA060115NB. 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.