OEM Carrier Flame Sensor 48GS400192 for Model PY3PPA048115AB

This is the genuine OEM Carrier flame sensor (part number 48GS400192), factory-specified for the Carrier PY3PPA048115AB gas furnace. The flame sensor is a critical safety component that uses ionization/rectification to detect the presence of a burner flame during each heating cycle. When the flame sensor becomes coated with oxidation or fails entirely, the furnace's integrated control board can no longer confirm combustion — causing the system to light, run briefly for 5–8 seconds, then shut down on lockout. This cycle typically repeats 3 times before the board locks out completely, leaving your home without heat.

• Part Specs: OEM Part # 48GS400192 | 90-degree mounting bracket included | Approx. 4.9" L × 1.75" H | Factory-matched rod diameter and bend angle for direct drop-in fitment
• OEM vs Generic: This is a genuine Carrier OEM sensor — not an aftermarket substitute. OEM sensors use the correct alloy rod composition and factory-spec bend geometry, ensuring proper flame signal output to the control board. Generic sensors can produce weak microamp readings, causing nuisance lockouts even on a healthy burner.
• Install Difficulty: 2/5 — Straightforward single-screw mount with one wire connector. Tools needed: 1/4" nut driver, fine steel wool or emery cloth (to clean rod if reusing bracket), multimeter (optional, to verify microamp signal). Always disconnect power before servicing. Do NOT touch the rod with bare hands — skin oils cause premature oxidation.
• Warranty: 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Designed for the Carrier PY3PPA048115AB gas furnace. If you are unsure of fitment, verify part number 48GS400192 on your existing sensor or unit data plate before ordering. Our HVAC parts specialists are available to confirm compatibility — order with confidence and get back to heat fast.