OEM Carrier Flame Sensor (48GS400192) for Model PY3PNA042060AB

This is the factory OEM replacement flame sensor for the Carrier PY3PNA042060AB gas furnace. The flame sensor — also called a flame rod — is a critical safety component mounted in the burner assembly. During each heating cycle, the control board sends power to the igniter, the gas valve opens, and the burner ignites. The flame sensor then detects the presence of a flame via electrical current rectification through the ionized gas. If the sensor rod is coated with oxidation or has failed, the control board receives no confirmation signal and shuts the gas valve within 5–8 seconds to prevent unburned gas accumulation — resulting in a frustrating no-heat lockout that repeats on every call for heat.

• OEM Part Number: 48GS400192 | 90-degree mounting bracket included | Factory-original Carrier specification
• OEM vs Generic: This is a genuine Carrier OEM part, manufactured to exact factory tolerances for current draw, rod length (~1.6" sensing rod), and bracket geometry — ensuring reliable signal detection and preventing nuisance shutdowns caused by off-spec aftermarket sensors.
• Install Difficulty: 2/5 — Straightforward single-screw bracket replacement. Tools needed: 1/4" nut driver, needle-nose pliers, fine steel wool or emery cloth (to clean rod if reusing). Always shut off gas supply and power before servicing. Photograph wire routing before disconnecting lead.
• Warranty: 1-year OEM manufacturer warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY3PNA042060AB packaged gas/electric unit. Verify your existing sensor's bracket angle and rod length match before ordering. If your furnace starts, runs briefly, then shuts off on every cycle, a fouled or failed flame sensor (part #48GS400192) is the most common cause. Order now and restore reliable heat today — same-day shipping available on all in-stock orders.