OEM Carrier Hot Surface Igniter (Spark Electrode) 48GS400168 for Model PY1PNB018040AAAA

This OEM spark electrode igniter (part number 48GS400168) is the factory-specified hot surface ignition replacement for the Carrier PY1PNB018040AAAA packaged unit. The igniter is the critical first step in every heating cycle — it generates the high-temperature surface or spark that lights the burner gas. When it fails, the furnace or packaged unit will attempt ignition, fail to establish flame, and go into hard lockout, leaving you with a no-heat call and a flashing fault code.

• Specs: OEM Part Number 48GS400168 | Spark Electrode Ignitor | Factory-matched geometry and electrode gap | Rated for Carrier packaged heating applications
• OEM vs Generic: This is the exact OEM Carrier igniter — not an aftermarket approximation. Generic igniters often differ in electrode positioning and tip material, increasing the risk of nuisance lockouts, premature cracking, or misfire. OEM ensures first-cycle reliability every time.
• Install difficulty: 3/5 — Shut off gas and power at the disconnect before servicing. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, and a multimeter to verify continuity on the new igniter before reinstallation. Handle the igniter tip with care — skin oils can cause premature failure.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed and verified for the Carrier PY1PNB018040AAAA packaged unit. Always cross-reference the OEM part number 48GS400168 on your unit's wiring diagram or data plate before ordering. Our HVAC parts specialists are available to confirm fitment — reach out before you buy if you have any questions.