OEM Carrier Spark Electrode Ignitor 48VL400002 for Model PY3GPAA42090NA

This OEM spark electrode ignitor is the factory-specified replacement for the Carrier PY3GPAA42090NA packaged gas unit. The ignitor generates the high-voltage spark that ignites the gas burner on each heating call. When it fails, the control board will attempt ignition, detect no flame, and lock out the system — leaving you with a unit that runs its inducer but produces no heat. Common symptoms include repeated ignition lockouts, error codes for ignition failure, and no heat despite the thermostat calling for it.

Note: OEM part number 48VL400002 has been superseded by Carrier part number 50HJ403022. This listing covers both numbers — same factory-spec ignitor assembly, updated part designation.

• Specs: Spark electrode ignitor assembly | Replaces 48VL400002, 50HJ401430, 50HJ400608 | Compatible with Carrier, Bryant, and Payne packaged gas equipment | Factory-matched electrode gap and ceramic insulator
• OEM vs Generic: OEM electrodes are manufactured to exact factory gap and ceramic specifications. Off-brand electrodes may produce a weak or inconsistent spark, causing nuisance lockouts and premature control board wear from repeated retry cycles.
• Install Difficulty: 3/5 — Requires disconnecting the high-voltage ignition wire and removing the burner access panel. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, and a multimeter to verify spark circuit continuity. Always shut off gas supply and disconnect power at the disconnect before servicing. Handle the electrode tip carefully — ceramic insulators are fragile.
• Warranty: 1-year OEM manufacturer warranty against defects. Orders placed before 3 PM ship same business day from our warehouse.

Compatibility: Designed for the Carrier PY3GPAA42090NA packaged gas/electric unit. Cross-references with successor part 50HJ403022. Verify your existing electrode's mounting bracket configuration and wire harness connector before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you buy if you have any questions.