OEM Carrier Spark Electrode Ignitor 48VL400002 for Model PY4GPAB36090AA

This is the factory-authorized OEM spark electrode ignitor (part number 48VL400002) for the Carrier PY4GPAB36090AA packaged gas/electric unit. The spark electrode ignitor generates the high-voltage arc that lights the burner on each call for heat. When this component fails, the control board will attempt ignition, detect no flame, and initiate a lockout sequence — leaving you with a no-heat condition and a fault code. Symptoms include repeated clicking with no ignition, or the unit cycling off within seconds of a heat call.

• Specs: Spark electrode ignitor assembly | Factory-matched electrode gap and ceramic insulator | OEM part number 48VL400002 | Superseded by Carrier part 50HJ403022 (same fit and function — confirm fitment at checkout)
• OEM vs Generic: OEM spark electrodes are manufactured to exact gap tolerances and ceramic insulation ratings specified by Carrier. Off-brand electrodes often suffer from inconsistent arc gaps, leading to unreliable ignition and premature ceramic cracking under thermal cycling.
• Install Difficulty: 2/5 — Turn off all power and gas before servicing. Tools needed: 1/4" and 5/16" nut driver, needle-nose pliers. Disconnect the ignition wire lead, remove the mounting screws, swap the electrode, and reconnect. Always verify the electrode gap per the unit's service manual before firing.
• Warranty: 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse when ordered before 3 PM EST.

Compatibility: Designed as a direct OEM replacement for the Carrier PY4GPAB36090AA packaged rooftop/gas-electric unit. Note that OEM part 48VL400002 has been superseded by Carrier part number 50HJ403022 — our team will verify the correct current-production part ships for your unit. Questions about fitment? Contact our HVAC parts specialists before ordering — we confirm compatibility on every order.