OEM Carrier Spark Electrode Ignitor 48GS400168 for Model PY2PNB024040AA

This OEM spark electrode ignitor assembly (part #48GS400168) is the factory-specified replacement for the Carrier PY2PNB024040AA packaged gas heating unit. The ignitor is the first critical component in the heating sequence — it generates the spark or surface heat needed to ignite the gas burners on each call for heat. When this part fails, the system will attempt ignition, fail to light, and enter safety lockout mode — leaving you with no heat. Common symptoms include a furnace that clicks or attempts to start but shuts off within seconds, repeated ignition lockout error codes, or a unit that runs the inducer but never produces a flame.

• Part Specs: 2-rod spark electrode assembly | Factory Authorized Parts (FAP) | OEM part number 48GS400168 | Direct drop-in replacement — no modifications required
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part, manufactured to exact factory tolerances for electrode gap, ceramic insulation rating, and lead wire length. Generic igniters often feature inconsistent electrode gaps and inferior ceramic insulators that crack under thermal cycling, shortening service life.
• Install Difficulty: 2/5 — Straightforward swap. Tools needed: 1/4" or 5/16" nut driver, needle-nose pliers. Always shut off gas supply and 24V/115V power before beginning. Handle the ceramic electrode body carefully — avoid contact with skin oils, which can cause premature cracking.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier PY2PNB024040AA packaged gas/electric unit. Verify your existing part number against the unit's data plate or wiring diagram before ordering. Our fitment team is available to confirm compatibility before you buy — no guesswork required.