OEM Carrier Hot Surface Igniter (LH33ZS004) for Model PG9MAA048080AAKA

This is the factory OEM hot surface igniter for the Carrier PG9MAA048080AAKA gas furnace. During every call for heat, the igniter heats to approximately 2,500°F to ignite the gas burner. When it fails — whether cracked, open-circuited, or weakened from age — the furnace control board will attempt ignition, detect no flame, and lock out the system. The result: no heat, a blinking fault code, and a cold house. Replacing the igniter with the correct OEM part (LH33ZS004) restores reliable ignition and prevents nuisance lockouts caused by under-spec aftermarket igniters.

• OEM Part Numbers: LH33ZS004 (Hot Surface Igniter) | 323901-701 (Igniter Bracket & Gasket Assembly) — factory-matched components for the PG9MAA048080AAKA
• Specs: 120V AC | 5 Amp draw | Silicon carbide element | Designed for natural gas and LP applications | Factory-matched resistance and warm-up timing for Carrier IFC board sequencing
• OEM vs Generic: OEM igniters are calibrated to the exact resistance and heat-up profile required by the Carrier control board. Generic igniters can vary in warm-up time and resistance, causing intermittent lockouts or premature failure — especially in cold-start conditions.
• Install Difficulty: 2/5 — Turn off power and gas before beginning. Tools needed: 1/4" or 5/16" nut driver, needle-nose pliers. Never touch the silicon carbide element with bare hands — skin oils cause hot spots and premature cracking. Use the included bracket (323901-701) to ensure proper positioning and burner seal. Verify ignition sequence after installation.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Engineered as the direct OEM replacement for Carrier PG9MAA048080AAKA packaged gas furnaces. Also cross-references with LH33ZS003, LH33ZS002, and LH33ZS001 superseded part numbers. Confirm your model and data plate specifications before ordering — our team is available to verify fitment. Order now and ship today!