OEM Carrier Spark Electrode Ignitor 48VL400002 for Model PY3GEAA42090NA

This OEM spark electrode ignitor is the factory-specified replacement for the Carrier PY3GEAA42090NA packaged gas unit. The ignitor generates the high-voltage spark that ignites the gas burner during each heating cycle. When it fails or degrades, the control board will attempt ignition, detect no flame, and lock out the unit — leaving you with no heat. Common symptoms include repeated ignition lockout faults, a visible cracked or fouled electrode tip, and error codes on the control board indicating ignition failure.

• OEM Part Number: 48VL400002 | Current Superseding Part: 50HJ403022 | Genuine Carrier Factory Authorized Part | Spark electrode-type ignition assembly with integral bracket and lead wire
• OEM vs Generic: OEM electrodes are manufactured to exact gap, ceramic insulator grade, and wire length specifications for the PY3GEAA42090NA. Off-brand electrodes frequently have inconsistent spark gaps and lower-grade insulators, leading to misfires, carbon tracking, and repeat failures.
• Install Difficulty: 2/5 — Shut off gas supply and 24V control power before starting. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, a flashlight. Photograph or label the lead wire routing before disconnecting. Handle the ceramic insulator carefully — avoid any contact with oils from bare hands.
• Warranty: 1-year OEM factory warranty against manufacturing defects. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY3GEAA42090NA packaged gas/electric rooftop unit. Note that OEM part number 48VL400002 has been superseded by Carrier part number 50HJ403022, which is the current factory replacement shipped for this application. Verify your existing electrode assembly matches before installation. Have questions about fitment? Our HVAC parts specialists verify compatibility before every order — reach out before you buy.