OEM Carrier Hot Surface Igniter (Spark Electrode) for Model PY3PNA048115NB — Part #48GS400168

This is the factory OEM spark electrode igniter for the Carrier PY3PNA048115NB packaged unit. The hot surface igniter is the component responsible for igniting the gas burner at the start of every heating cycle. On a call for heat, the control board energizes the igniter, which heats to ignition temperature before the gas valve opens. When the igniter fails — due to hairline cracks, oxidation, or thermal fatigue — the burner never lights, and the control board enters a safety lockout. Common symptoms include: the inducer fan running normally followed by a hard lockout, an error code indicating failed ignition, or repeated restart attempts with no heat output.

• Specs: Spark electrode igniter design | Factory OEM part number 48GS400168 | Drop-in replacement — no modifications required | Engineered to factory ignition timing and surface temperature specifications
• OEM vs Generic: This is the genuine Carrier OEM igniter, manufactured to exact geometry and thermal resistance specs. Generic igniters may vary in element length or tip angle, causing delayed ignition or misfire that shorten heat exchanger life.
• Install difficulty: 2/5 — Always shut off gas supply and disconnect power before servicing. Tools needed: 1/4" or 5/16" nut driver, needle-nose pliers. Handle the igniter element with care — never touch the ceramic or element with bare hands, as skin oils cause premature failure. Photograph existing wiring before disconnecting.
• Warranty: 1-year OEM factory warranty against defects. In stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier PY3PNA048115NB packaged gas/electric units. Always verify your existing part number on the unit's data plate or wiring diagram before ordering. Our fitment team is available to confirm compatibility before you buy — no guesswork, guaranteed correct part.