OEM Carrier Flame Sensor (90° with Mounting Bracket) for Model PY3PEA048115NB

This is the factory OEM flame sensor for the Carrier PY3PEA048115NB gas furnace, sold under part number 48GS400192. The flame sensor is a critical safety component: after the hot surface igniter lights the burner, the flame rod detects the presence of combustion via electrical rectification and ionization. If the control board receives no confirming signal within a few seconds, it cuts gas flow and locks out the furnace — a built-in safeguard against unburned gas accumulation. A failed or contaminated sensor is one of the most common reasons a furnace fires briefly, then shuts off 5–8 seconds later, often triggering repeated lockout codes.

• Part Number & Specs: OEM #48GS400192 | 90-degree rod angle | Includes mounting bracket | Dimensions approx. 4.9" × 1.75" × 1.6" | Factory-matched to Carrier PY3PEA048115NB control board signal range
• OEM vs Generic: This is a genuine Carrier OEM part — not an aftermarket substitute. OEM sensors maintain the exact rod alloy composition and geometry required for proper microamp current readings. Generic sensors can drift out of spec, causing nuisance lockouts or false flame detection.
• Install Difficulty: 2/5 — Disconnect power and gas before servicing. Tools needed: 1/4" or 5/16" nut driver, needle-nose pliers, fine steel wool or emery cloth (to clean rod if reusing). Swap takes under 15 minutes for most technicians. Always confirm flame sensor wire connector seats fully on the new rod.
• Warranty & Shipping: Backed by a 1-year OEM manufacturer warranty against defects. In stock and ships same business day from our warehouse.

Compatibility: Designed as the direct OEM replacement flame sensor for Carrier model PY3PEA048115NB. Always verify the OEM part number on your existing sensor or equipment data plate before ordering. Need help confirming fitment? Our HVAC parts team will verify compatibility before you buy — just ask.