OEM Carrier Spark Electrode Ignitor (48GS400168) for Model PY3PEA048090NA

This is the genuine OEM spark electrode ignitor assembly for the Carrier PY3PEA048090NA packaged heating and cooling unit. The spark electrode ignitor generates the high-voltage spark that ignites the gas burner at the start of each heating cycle. When this component fails, the control board will attempt ignition, detect no flame, and enter a safety lockout — leaving you with no heat and a blinking fault code. Common failure symptoms include repeated ignition attempts with no flame, a visible cracked or fouled electrode tip, or a unit that locks out after 3 consecutive tries.

• OEM Part Number: 48GS400168 | Manufacturer description: Spark Electrode Ignitor Assembly | Factory-authorized Carrier replacement part
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part, manufactured to exact electrode gap and ceramic insulator specifications. Off-brand electrodes can arc inconsistently, causing nuisance lockouts or premature heat exchanger wear from misfires.
• Install Difficulty: 2/5 — Shut off gas supply and 24V control power before servicing. Tools needed: 1/4" nut driver, needle-nose pliers, and a multimeter to verify spark ignition circuit continuity. Always inspect the ignition wire and ceramic insulator for cracks before reinstalling.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered as a direct drop-in replacement for Carrier model PY3PEA048090NA packaged rooftop/split units. Verify your unit's existing electrode part number on the data plate or wiring diagram before ordering. Have a question about fitment? Our HVAC parts specialists verify compatibility before you buy — order with confidence.