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This is the OEM factory-specified hot surface spark electrode igniter (part number LH33WZ010) for the Carrier LC3:50HE400811 packaged heating unit. The igniter is the first active component in the gas ignition sequence — it heats to ignition temperature and triggers combustion when the control board calls for heat. When this part fails, the furnace or packaged unit will attempt ignition, fail to light, and enter a safety lockout — leaving you with no heat and a blinking fault code on the control board. Replacing this OEM igniter restores the factory-specified ignition sequence and prevents nuisance lockouts caused by under-spec aftermarket substitutes.
Compatibility: This igniter is the direct OEM replacement for Carrier model LC3:50HE400811 packaged heating equipment. Verify the OEM part number LH33WZ010 against your unit's data plate or existing igniter label before ordering. Not sure if this is the right part? Our HVAC parts specialists verify fitment before every order — contact us and we'll confirm compatibility at no charge. In stock and ships today.