OEM Carrier Hot Surface Igniter LH33WZ010 for Model LC3:50HE400799
This is the genuine OEM hot surface igniter (spark electrode ignitor), part number LH33WZ010, factory-specified for the Carrier LC3:50HE400799 packaged or split-system unit. The hot surface igniter is the component responsible for lighting the burner assembly at the start of every heat cycle. When it fails, the control board will attempt ignition, detect no flame, and lock out the system — leaving you with a furnace or heat section that powers on but delivers no heat. Common symptoms include the inducer running normally, the gas valve opening, but no ignition occurring, followed by a fault code lockout.
-
Specs: Spark electrode igniter design | OEM part number LH33WZ010 | Factory-matched geometry and tip spacing for reliable arc | Rated for high-cycle residential and light commercial applications
-
OEM vs Generic: This is a genuine Carrier OEM igniter, manufactured to exact factory electrode gap and ceramic insulator specifications. Aftermarket igniters frequently suffer from incorrect tip geometry, mismatched standoff dimensions, and inferior ceramic that cracks under thermal cycling — leading to repeat failures within one season.
-
Install difficulty: 2/5 — Always shut off gas supply and 24V control power before servicing. Tools needed: 1/4" and 5/16" nut driver, needle-nose pliers, work gloves. Never touch the ceramic or electrode tip with bare hands — skin oils cause premature cracking under heat. Photograph wiring and mounting orientation before removal.
-
Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Orders placed before cutoff ship same business day from our stocked warehouse.
Compatibility: Designed specifically for the Carrier LC3:50HE400799. Verify your existing igniter part number against LH33WZ010 before ordering, and confirm electrode tip configuration matches your burner assembly. If you have questions about fitment, our HVAC parts specialists confirm compatibility before your order ships — no guesswork.