OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model N6D48NG480210

This is the factory OEM Direct Spark Ignition (DSI) control board for the Carrier N6D48NG480210 packaged gas/electric unit. The DSI control board serves as the brain of the heating system — it sequences the inducer motor, spark igniter, gas valve, and flame verification circuit in precise timing. When this board fails, common symptoms include a complete no-heat condition, repeated ignition lockouts, failure to prove flame even when the burner lights, or erratic LED fault codes that don't clear after a reset. Replacing this board with the correct OEM part restores factory-programmed timing and safeguards.

• Specs: OEM Part Number LH33WP002 | Direct Spark Ignition (DSI) type | 24V control circuit compatible | Factory-programmed ignition timing and lockout logic | Designed for Carrier N6D48NG480210 packaged units
• OEM vs Generic: This is a genuine Carrier OEM board with factory-programmed DSI timing sequences. Aftermarket boards may use approximate timing profiles that cause nuisance lockouts, premature gas valve wear, or failed safety certifications — risking voided warranties and callbacks.
• Install difficulty: 3/5 — Requires disconnecting 24V and line-voltage connectors, photographing all wiring harnesses prior to removal, and transferring any DIP switch settings from the old board. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, smartphone for wiring photos, and a multimeter to verify 24V supply before installation. Always shut off gas and disconnect power at the disconnect box before beginning.
• Warranty: 1-year OEM manufacturer warranty. In-stock and ships same business day from our climate-controlled parts warehouse.

Compatibility: This board is the direct OEM replacement for Carrier model N6D48NG480210 packaged heating and cooling units equipped with Direct Spark Ignition. Always verify your existing OEM part number on the board label before ordering to confirm an exact match. Need help confirming fitment? Our HVAC parts specialists verify compatibility before every order — reach out before you buy.