OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model N6A48NG482011

This is the factory OEM Direct Spark Ignition (DSI) control board for the Carrier N6A48NG482011 packaged gas/electric unit. The DSI control board is the central command module that manages the entire heating sequence — from inducer motor startup and pressure switch verification through spark ignition, flame sensing, and burner operation. When this board fails, common symptoms include a complete no-heat condition, repeated ignition lockout faults, failure to advance through the heating sequence, or erratic cycling that never reaches steady-state burner operation.

• Specs: OEM Part Number LH33WP002 | Direct Spark Ignition (DSI) control | 24V control circuit | Factory-programmed timing sequences and fault lockout logic matched to Carrier N6A48NG482011 specifications
• OEM vs Generic: This OEM board ships pre-programmed with Carrier's exact ignition timing, retry logic, and safety lockout parameters. Aftermarket boards may use generic timing profiles that cause nuisance lockouts, void equipment warranties, or fail to meet manufacturer safety specifications.
• Install difficulty: 4/5 — Board replacement requires disconnecting multiple low- and high-voltage wiring harnesses. Tools needed: Phillips and flathead screwdrivers, 1/4" and 5/16" nut drivers, needle-nose pliers, multimeter. Photograph all wiring connections before removal. We strongly recommend a licensed HVAC technician perform this repair due to high-voltage and gas system interactions.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse when ordered before 3PM local time.

Compatibility: Engineered as a direct OEM replacement for the Carrier N6A48NG482011 packaged gas/electric unit. Always verify the OEM part number LH33WP002 against your unit's existing control board label and the data plate inside the access panel before ordering. Not sure if this is the right part? Our HVAC parts specialists verify fitment before your order ships — contact us any time.