OEM Carrier Flame Sensor 48GS400192 for Model PY2PNB060115AA

This is the genuine OEM Carrier flame sensor (part #48GS400192) factory-specified for the Carrier PY2PNB060115AA gas furnace. The flame sensor — also called a flame rod — uses ionization/rectification technology to detect the presence of a burner flame during each heating cycle. When the burner lights, it generates a small DC microamp signal through the rod; the control board reads that signal to confirm combustion is occurring. A failed or fouled sensor cannot confirm the flame, so the control board commands a gas valve shutoff within 5–8 seconds as a safety precaution, resulting in a short-cycle lockout. Replacing this OEM sensor restores accurate flame detection and eliminates nuisance lockouts.

• OEM Part Number: 48GS400192 | Manufactured by Carrier/Bryant | Made in the USA | Dimensions approx. 4.9" × 1.75" × 1.6"
• OEM vs Generic: This factory-original sensor is built to exact resistance and geometry tolerances. Generic sensors can produce inconsistent microamp readings, leading to repeat nuisance shutoffs or premature control board wear.
• Install Difficulty: 2/5 — Turn off power and gas before servicing. Tools needed: 1/4" hex driver or nut driver, fine steel wool or emery cloth (for rod cleaning check first), and a multimeter capable of reading DC microamps to verify the repair. Single screw mount with one wire connector — straightforward swap.
• Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered for the Carrier PY2PNB060115AA gas furnace. Always verify part number 48GS400192 against your unit's data plate or wiring diagram before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order if you have any questions.