OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model N6A48NG481460

This is the OEM-direct replacement Direct Spark Ignition (DSI) Control Board (part number LH33WP002) for the Carrier N6A48NG481460 packaged gas/electric unit. The DSI control board serves as the brain of the heating system — it sequences the inducer motor, manages the spark ignition timing, monitors the flame sensor signal, and controls the gas valve open/close cycle. When this board fails, common symptoms include a hard lockout with no ignition attempt, intermittent no-heat calls, failure to prove flame even with a known-good flame sensor, or fault codes indicating a control board fault on the unit's diagnostic LED.

• Specs: Direct Spark Ignition (DSI) design | OEM part number LH33WP002 | 24V control circuit compatible | Factory-programmed timing sequences for Carrier N6A48NG481460 — no field programming required
• OEM vs Generic: This is a genuine OEM Carrier board, factory-set with the exact ignition timing, lockout thresholds, and fault logic your unit requires. Aftermarket boards frequently introduce nuisance lockouts or mismatched timing that can damage the heat exchanger or gas valve over time.
• Install Difficulty: 3/5 — Requires shutting off gas supply and 120V power before starting. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, and a phone or camera to photograph all wiring harness connections prior to removal. Take note of all connector positions and DIP switch settings on the old board before swapping.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our climate-controlled parts warehouse.

Compatibility: Engineered specifically for the Carrier N6A48NG481460 packaged unit. Always cross-reference OEM part number LH33WP002 against your unit's data plate and existing control board label before ordering. Need fitment verification? Our HVAC parts specialists confirm compatibility before your order ships — no guesswork, no costly returns.