OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model CP48P348P304010CP

This is the factory OEM Direct Spark Ignition (DSI) control board for the Carrier CP48P348P304010CP packaged unit. The DSI control board orchestrates the entire ignition sequence — managing inducer startup, spark ignition timing, flame sensing, gas valve activation, and safety lockout logic. When this board fails, common symptoms include a unit that won't ignite, repeatedly locks out after ignition attempts, throws continuous fault codes, or fails to sequence the blower and burner correctly. If your Carrier packaged unit is showing erratic heating behavior or a solid lockout with no heat, this board is the most likely culprit.

• Specs: OEM Part Number LH33WP002 | Direct Spark Ignition (DSI) control board | 24V control circuit compatible | Factory-configured for single-stage gas heat sequencing | Includes pre-wired terminal layout matching CP48P348P304010CP harness
• OEM vs Generic: This is a genuine Carrier OEM board — not an aftermarket clone. OEM boards retain factory-calibrated timing delays, lockout thresholds, and fault code logic. Generic boards frequently use mismatched timing intervals that cause nuisance lockouts, premature shutdowns, and may void system warranties.
• Install Difficulty: 3/5 — Moderate complexity. Power down and confirm zero voltage at all terminals before handling. Tools needed: 1/4" and 5/16" nut drivers, flathead screwdriver, phone or camera to photograph all wiring connections before removal. Transfer wiring harnesses one connector at a time to avoid miswiring. Verify all fault code LED sequences are cleared after installation.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. In-stock and ships same business day from our warehouse.

Compatibility: This control board is the direct factory replacement for Carrier model CP48P348P304010CP packaged gas/electric units. Always confirm OEM part number LH33WP002 against your unit's wiring diagram or data plate before ordering. Have questions about fitment? Our HVAC parts specialists verify compatibility before you buy — no guesswork, no returns.