OEM Carrier Spark Electrode Igniter 48GS400168 for Model PY3PPA048115NB

This OEM spark electrode igniter assembly is the factory-specified replacement for the Carrier PY3PPA048115NB packaged gas/electric unit. The igniter is responsible for initiating combustion each time the system calls for heat. When it fails or degrades, the control board will attempt ignition, detect no flame, and lock out the system — leaving you with a unit that runs the inducer and blower but produces no heat. Symptoms include repeated ignition attempts followed by a lockout fault code, or a furnace that simply won't light.

• Part Specs: OEM part number 48GS400168 | 2-rod spark electrode igniter assembly | Factory Authorized Parts | Direct drop-in replacement — no modifications required
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part, built to exact electrode gap and ceramic insulator specifications. Generic igniters often feature inconsistent rod geometry and lower-grade ceramic, leading to weak spark, premature cracking, and repeat failures.
• Install Difficulty: 2/5 — Shut off gas and power before starting. Tools needed: 1/4" nut driver, flathead screwdriver, needle-nose pliers. Disconnect the wire harness, remove the mounting screws, swap the igniter assembly, and reconnect. Always handle ceramic igniter components carefully to avoid cracking.
• Warranty & Shipping: 1-year OEM factory warranty. In stock and ships same business day from our NationalHVACParts.com warehouse.

Compatibility: Designed for the Carrier PY3PPA048115NB packaged unit. Verify your existing igniter type and wire connector style against your unit's data plate before ordering. Not sure if this part fits? Our fitment team is available to verify compatibility before you purchase — no guesswork required.