OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model CP48P348P305010CP

This is the factory OEM Direct Spark Ignition (DSI) control board for the Carrier CP48P348P305010CP packaged unit. The DSI control board serves as the brain of your heating system — managing the ignition sequence, monitoring flame presence, coordinating gas valve operation, and triggering safety lockouts when fault conditions are detected. Common failure symptoms include a system that attempts ignition but enters hard lockout, a unit that sparks continuously without establishing flame, error codes on the board's LED diagnostics, or a complete loss of heating function with no response from the ignition sequence.

• Specs: Direct Spark Ignition (DSI) control board | OEM Part Number: LH33WP002 | Factory-matched input/output logic for Carrier CP48P348P305010CP | Includes integrated LED fault code diagnostics for rapid field troubleshooting
• OEM vs Generic: This is a genuine Carrier OEM board manufactured to exact factory specifications. Generic aftermarket boards frequently use lower-grade relays and mismatched timing circuits, which can cause nuisance lockouts, premature failure, or unsafe ignition sequencing. OEM ensures precise flame-proving timing and full compatibility with your unit's safety controls.
• Install Difficulty: 3/5 — Control board replacement requires disconnecting 120V and 24V wiring harnesses, grounding the unit, and carefully documenting all connector positions before removal. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, smartphone for wiring photos, and a multimeter for pre/post verification. Recommended for qualified HVAC technicians or experienced DIYers comfortable working with control wiring.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. In-stock and ships same business day from our warehouse.

Compatibility: Engineered as a direct OEM replacement for the Carrier CP48P348P305010CP packaged unit. Always cross-reference OEM part number LH33WP002 against your existing board's label before ordering to confirm fitment. Have your model and serial number ready — our HVAC parts specialists are available to verify compatibility before you buy. Order today and get same-day shipping on in-stock parts.