OEM Carrier Spark Electrode Ignitor (48VL400002) for Model PY4GPAA48090AA

This OEM Carrier spark electrode ignitor is the factory-specified replacement for the Carrier PY4GPAA48090AA packaged gas/electric unit. The spark electrode ignitor generates the high-voltage arc that ignites the main gas burners on each call for heat. When the ignitor fails or becomes fouled, the control board will attempt ignition, detect no flame, and lock out the system — leaving you with a blower running but no heat output. Typical symptoms include a single click-click-click sequence followed by a hard lockout fault code.

• Part Specs: OEM Part# 48VL400002 | Superseded by Carrier P/N 50HJ403022 | Spark electrode assembly | CSA Listed | Dimensions: 3.25"H × 1.5"W | Country of Origin: Mexico
• OEM vs Generic: This is a Factory Authorized Part built to exact Carrier electrode gap, ceramic insulator rating, and cable length specifications. Off-brand electrodes frequently have inconsistent spark gap tolerances that result in weak or intermittent ignition arcs, shortening heat exchanger and gas valve service life.
• Install Difficulty: 2/5 — Turn off gas supply and 24V power at the disconnect before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers. Photograph the electrode wire routing and mounting bracket orientation before removal. Do not touch the ceramic insulator body with bare hands — skin oils accelerate cracking under heat cycling.
• Warranty: 1-year OEM factory warranty against manufacturing defects. Orders placed by 3:00 PM local time ship same business day from our warehouse.

Compatibility: Engineered as the direct OEM replacement for Carrier model PY4GPAA48090AA packaged heating and cooling units. Note: Carrier has superseded 48VL400002 with current production part number 50HJ403022 — both numbers are fulfilled from the same factory assembly. Verify electrode mounting bracket style on your unit's burner deck before ordering. Questions about fitment? Our HVAC parts specialists confirm compatibility before you buy.