OEM Carrier Flame Sensor 48GS400192 for Model PY3PNA036090NA

This is the OEM factory-specified flame sensor (flame rod) for the Carrier PY3PNA036090NA packaged gas/electric unit. The flame sensor is a safety-critical component that monitors the presence of a burner flame by passing a small electrical current through the rod and into the flame. If the control board does not detect the correct microamp (µA) signal within seconds of ignition, it will cut gas flow and lock out the system. A dirty, cracked, or corroded flame sensor is one of the most common causes of a furnace or packaged unit that lights, then shuts off after 5–8 seconds — often repeating in a frustrating cycle before going into full lockout.

• OEM Part Number: 48GS400192 | Direct factory replacement — no modifications required for Carrier PY3PNA036090NA
• OEM vs Generic: This OEM sensor is manufactured to exact factory microamp sensitivity tolerances. Aftermarket sensors often exhibit wider tolerance ranges, leading to nuisance lockouts or, worse, delayed flame-loss detection — making OEM the only safe choice for gas appliances.
• Install Difficulty: 2/5 — Shut off gas supply and 120V power before servicing. Tools needed: 1/4" hex driver or nut driver, soft emery cloth (for light rod cleaning prior to replacement), multimeter capable of reading microamps to verify operation after install. Always confirm burner flame color and µA reading post-installation.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier PY3PNA036090NA 3-ton packaged gas/electric unit (90,000 BTU heating input). Always cross-reference your unit's data plate and existing part number before ordering. Need help confirming fitment? Our HVAC parts specialists are available to verify compatibility before you purchase — contact us today and get your system running again fast.