OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model N6D48NG480106

This is the OEM factory-specified Direct Spark Ignition (DSI) control board for the Carrier N6D48NG480106 packaged unit. The DSI control board serves as the brain of the heating system — it sequences the inducer motor, spark ignition, gas valve operation, and safety circuit monitoring. When this board fails, common symptoms include a complete no-heat lockout, repeated failed ignition attempts with no spark, the unit cycling on and off without establishing flame, or error codes that persist even after resetting the system. Replacing with the correct OEM board ensures all timing sequences, safety thresholds, and fault detection logic match Carrier's factory specifications exactly.

• Specs: Direct Spark Ignition (DSI) board | OEM Part Number: LH33WP002 | 24V control circuit compatible | Integrated fault lockout and diagnostic LED indicators | Factory-matched timing sequences for inducer pre-purge, ignition trial, and flame proving
• OEM vs Generic: OEM control boards use factory-programmed microcontrollers with exact ignition timing and safety lockout thresholds. Aftermarket boards frequently use approximated timing that can cause nuisance lockouts, premature component wear, or — more critically — unsafe fault responses that may void equipment warranties.
• Install difficulty: 3/5 — Requires shutting off gas supply and disconnecting power at the disconnect and breaker before starting. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone or camera to photograph all wiring harness connections prior to removal. Take note of all low-voltage and high-voltage terminal labels. If fault codes are present, document them before power-down.
• Warranty: 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our climate-controlled warehouse.

Compatibility: This board is the direct OEM replacement for Carrier N6D48NG480106 packaged gas/electric units. Always verify the OEM part number LH33WP002 printed on your existing board's label before ordering to confirm fitment. Our HVAC parts specialists are available to verify compatibility before you purchase — no guesswork, no returns.