OEM Carrier Hot Surface Igniter for Model PY2PNB030040AB (Part# 48GS400168)

This is the factory OEM hot surface igniter (spark electrode ignitor) specified for the Carrier PY2PNB030040AB packaged heating and cooling unit. The igniter is the first critical link in every heating cycle — the control board energizes it to reach surface temperatures high enough to ignite the gas burner. When this part fails, the inducer will run, the gas valve will open, but no flame is established. The result is a hard lockout after one or more failed ignition attempts, leaving you with a system that runs the fan but delivers no heat.

• Specs: OEM Part# 48GS400168 | Spark Electrode Ignitor | Factory-specified for Carrier PY2PNB030040AB | Direct drop-in replacement — no modifications required
• OEM vs Generic: This OEM igniter is manufactured to exact Carrier factory tolerances for element geometry, mount position, and gap specification. Aftermarket igniters frequently use thinner elements that are more prone to cracking on thermal cycling, leading to repeat failures within one heating season.
• Install Difficulty: 3/5 — Shut off gas supply and 24V/line voltage power before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers. Handle the igniter element with care — skin oils can cause hot spots and premature cracking. Never touch the ceramic or element body with bare hands.
• Warranty: 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our stocked warehouse.

Compatibility: Engineered as the direct OEM replacement for Carrier model PY2PNB030040AB. Always cross-reference the part number on your existing igniter or unit data plate before ordering to confirm fitment. Our HVAC parts specialists are available to verify compatibility before you buy — no guesswork, no returns.