OEM Carrier Spark Electrode Ignitor for Model PY3GNA024040AB — Part #48GS400168

This is the factory OEM spark electrode ignitor assembly for the Carrier PY3GNA024040AB gas-fired packaged unit. The spark electrode generates the high-voltage arc that ignites the gas burners during each heating cycle. When the ignitor fails or becomes fouled, the control board will attempt ignition, fail to detect a flame, and lock out the unit — leaving you with a blower running but zero heat output. Common symptoms include repeated ignition attempts followed by a lockout fault code, intermittent heating, or a complete no-heat condition.

• OEM Part Numbers: 48GS400168 (active) | 48VL400002 (superseded, discontinued Jan 2024) — this listing ships the current active OEM replacement
• OEM vs Generic: Factory-authorized Carrier spark electrodes are manufactured to exact gap, ceramic insulator, and connector specifications. Aftermarket electrodes frequently ship with inconsistent tip geometry and inferior ceramic insulators, leading to misfires, premature carbon fouling, and repeated no-heat service calls.
• Install Difficulty: 2/5 — Turn off gas supply and 24V power to the unit before beginning. Tools needed: 1/4" nut driver, needle-nose pliers, and a flat-head screwdriver. Photograph the wire connector orientation before disconnecting. The electrode mounts on the burner assembly and typically requires removal of the burner access panel only. Average technician time: 20–30 minutes.
• Warranty: 1-year OEM manufacturer warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY3GNA024040AB gas-fired packaged unit. This part also crosses to Bryant and Payne packaged unit models that share the 48GS gas pack platform. Always verify your unit's data plate model number before ordering. Our team is available to confirm fitment — contact us before you buy if you have any questions.