OEM Carrier 90° Flame Sensor (48GS400192) for Model PY2PNB024040NC

This is the genuine OEM Carrier flame sensor, part number 48GS400192, factory-specified for the Carrier PY2PNB024040NC gas furnace. The flame sensor (also called a flame rod) is a critical safety component that uses ionization/rectification technology to verify a burner flame is present during each heating cycle. When the sensor is contaminated with oxidation or has failed entirely, the furnace control board cannot confirm ignition — causing the burner to light briefly and then shut off after 5–8 seconds, often triggering a lockout fault code. This is one of the most common furnace service calls and one of the easiest parts to replace.

• Specs: 90° mounting angle | Approx. rod length 1.6 in. | Overall dimensions ~4.9 in. × 1.75 in. | Includes mounting bracket | Direct OEM replacement — no modifications required
• OEM vs Generic: This is a genuine Carrier OEM part sourced from the original manufacturer. OEM sensors are calibrated to the exact microamp detection threshold required by the PY2PNB024040NC control board. Generic aftermarket sensors may trigger nuisance lockouts due to slightly off-spec rod geometry or alloy composition.
• Install difficulty: 1/5 — One of the simplest furnace repairs. Tools needed: 1/4 in. hex driver or flat-head screwdriver, fine steel wool or emery cloth (to clean rod if reusing), multimeter (optional, to verify microamp draw). Always shut off power and gas before servicing. Photograph wire connection before removing old sensor.
• Warranty: Backed by a 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier PY2PNB024040NC gas furnace. Verify your model and serial number on the unit's data plate before ordering. Not sure if this is the right part? Our HVAC parts specialists verify fitment before every order — contact us today and we'll confirm compatibility in minutes. In stock — order before 3 PM for same-day shipping.