OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model N6D48NG480087

This is the genuine OEM Direct Spark Ignition (DSI) control board for the Carrier N6D48NG480087 packaged gas unit. The DSI control board serves as the brain of the heating system — sequencing the inducer motor, spark igniter, gas valve, and flame verification in precise timing. When this board fails, common symptoms include a complete no-heat condition, repeated ignition lockout (flashing fault codes), erratic burner cycling, or a system that sparks but never opens the gas valve. Diagnosing a failed DSI board early prevents secondary damage to the gas valve and heat exchanger.

• Specs: OEM Part Number LH33WP002 | Direct Spark Ignition (DSI) control | 24V control circuit input | Factory-programmed timing sequences for ignition, trial, and lockout — no field calibration required
• OEM vs Generic: This is the factory-original Carrier board, identical to what shipped in your unit. Aftermarket DSI boards frequently feature incorrect timing delays and non-matching fault code logic, which can mask true failures or damage connected components. OEM is the only guaranteed drop-in fit.
• Install Difficulty: 3/5 — Disconnect power at the breaker and confirm zero voltage before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone camera to photograph all wiring harness positions prior to disconnection. Transfer wiring harnesses connector-by-connector. Restore power and observe ignition sequence for proper operation.
• Warranty: 1-year OEM factory warranty against manufacturing defects. Orders placed by 3PM local time ship same business day from our climate-controlled parts warehouse.

Compatibility: Engineered specifically for the Carrier N6D48NG480087 packaged gas unit using OEM part number LH33WP002. Always verify your existing board's part number against the unit data plate before ordering to confirm an exact match. Our parts specialists are available to verify fitment — reach out before you order if you have any questions. In stock and ready to ship today.