OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model CP48P348P310011CP

This is the factory OEM Direct Spark Ignition (DSI) control board for the Carrier CP48P348P310011CP packaged unit. The DSI control board orchestrates the entire heating sequence — managing inducer startup, spark ignition timing, flame verification, gas valve operation, and safety lockout logic. When this board fails, common symptoms include repeated ignition lockouts, no-heat calls despite thermostat demand, erratic burner cycling, or a complete failure to initiate the heating sequence. This OEM replacement board (part number LH33WP002) restores factory-programmed ignition timing and safety responses that generic aftermarket boards frequently cannot replicate with precision.

• Specs: Direct Spark Ignition (DSI) control board | OEM Part No. LH33WP002 | Factory-programmed ignition timing, trial-for-ignition period, and lockout reset logic | Designed for Carrier CP48P348P310011CP packaged gas/electric unit
• OEM vs Generic: OEM boards carry exact firmware and relay ratings matched to your unit's gas valve, inducer motor, and safety circuit. Generic control boards often use off-spec relay contacts and unprogrammed timing sequences, leading to nuisance lockouts, premature component wear, or unsafe ignition behavior.
• Install Difficulty: 3/5 — Requires disconnecting 120V and 24V wiring harnesses. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone/camera for wiring documentation. Always shut off power at the disconnect and gas supply before beginning. Label all wires prior to removal and transfer one connector at a time to the new board.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Ships same business day from our climate-controlled warehouse in original factory packaging.

Compatibility: This board is the direct OEM replacement for Carrier model CP48P348P310011CP packaged units equipped with Direct Spark Ignition. Always verify your existing board's part number against LH33WP002 before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you purchase — reach out via chat or phone. In stock and ready to ship today.