OEM Carrier Spark Electrode Ignitor for Model PY3GNAA48090AA — Part 48VL400002

This OEM Carrier spark electrode ignitor is the factory-specified replacement for the Carrier PY3GNAA48090AA packaged gas unit. The spark electrode ignitor generates a precisely timed high-voltage spark to ignite the burner assembly at the start of every heat cycle. When this component fails, the control board will attempt ignition, detect no flame, and trigger a hard lockout — leaving the unit with no heat output. Typical failure symptoms include a clicking ignition attempt followed by an immediate shutdown, a blinking fault code on the control board, or a unit that runs the inducer but never lights the burner.

• OEM Part Number: 48VL400002 (Carrier factory original) | Superseded/direct replacement: 50HJ403022 — both are genuine OEM Carrier assemblies meeting original factory specifications
• OEM vs Generic: OEM spark electrode igniters are manufactured to exact gap tolerance and ceramic insulator ratings. Generic electrodes frequently suffer from incorrect spark gap, inferior ceramic insulation, and premature cracking under thermal cycling — leading to repeat failures and potential ignition misfire.
• Install Difficulty: 2/5 — Disconnect power and gas supply before servicing. Tools needed: 1/4" and 5/16" nut drivers, flathead screwdriver, needle-nose pliers. Photograph existing wire routing and electrode positioning before removal. Handle ceramic insulator with care — do not touch the electrode tip.
• Warranty: 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Engineered for the Carrier PY3GNAA48090AA packaged gas/electric unit. Always verify your unit's full model and serial number on the data plate before ordering. Note: OEM part 48VL400002 has been superseded — the current shipping part is 50HJ403022, which is a direct, factory-authorized drop-in replacement. Questions about fitment? Our HVAC parts specialists verify compatibility before you order.