OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model N6A48NG482018

This is the factory OEM Direct Spark Ignition (DSI) control board, part number LH33WP002, designed specifically for the Carrier N6A48NG482018 packaged gas/electric unit. The DSI control board serves as the brain of the heating system — managing ignition sequencing, flame sensing, inducer motor operation, gas valve activation, and safety lockout logic. When this board fails, common symptoms include a no-heat condition, repeated ignition lockouts, failure to prove flame, erratic blower behavior, or fault codes that cycle without resolution.

• Specs: Direct Spark Ignition (DSI) control board | OEM part number LH33WP002 | 24V control circuit compatible | Integrated fault code diagnostics | Factory-configured ignition timing and lockout logic for Carrier N6A48NG482018
• OEM vs Generic: This is a genuine OEM Carrier board — not an aftermarket substitute. OEM boards preserve factory-programmed ignition timing, safety thresholds, and lockout sequences. Generic boards often use generalized firmware that can cause nuisance lockouts, improper flame sensing delays, or voided equipment warranties.
• Install Difficulty: 3/5 — Moderate. Requires shutting off power and gas before service. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, multimeter, and a phone or camera to document wiring harness positions before disconnecting. Take photos of all connector orientations and jumper settings prior to removal. Not recommended for unlicensed DIY on gas-fired equipment.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. In-stock and ships same business day from our climate-controlled warehouse.

Compatibility: Engineered as a direct OEM replacement for Carrier model N6A48NG482018 packaged units equipped with Direct Spark Ignition. Confirm part number LH33WP002 matches your existing board label before ordering. Our HVAC parts specialists are available to verify fitment — just reach out before you buy. Order by 3PM local time for same-day shipping.