OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model CP48P348P310010CP

This is the genuine OEM Direct Spark Ignition (DSI) control board for the Carrier CP48P348P310010CP packaged unit. The DSI control board serves as the brain of the heating system — it sequences the inducer motor, spark ignition, gas valve, and flame verification circuit. When this board fails, common symptoms include a no-heat lockout condition, repeated ignition attempts with no flame establishment, erratic cycling, or a complete loss of furnace operation despite normal thermostat signals. Replacing the control board with the correct OEM part ensures all timing sequences and safety lockout logic meet factory specifications.

• Specs: OEM Part Number LH33WP002 | Direct Spark Ignition (DSI) control board | 24V control circuit compatible | Factory-programmed ignition timing and lockout sequences | Designed for Carrier CP48 series packaged units
• OEM vs Generic: The LH33WP002 OEM board uses factory-calibrated ignition timing and safety lockout logic. Aftermarket boards may use generic programming that can cause nuisance lockouts, improper ignition timing, or missed safety shutoffs — putting equipment and occupants at risk. Always use OEM for control boards.
• Install difficulty: 4/5 — Control board replacement involves high-voltage and low-voltage wiring. Tools needed: nut driver set, flathead and Phillips screwdrivers, needle-nose pliers, multimeter, phone or camera for wiring documentation. Photograph all wiring connections before disconnecting. Disconnect power at the breaker and verify zero voltage before handling. Professional installation strongly recommended.
• Warranty: 1-year OEM factory warranty against defects. In-stock units ship same business day from our warehouse when ordered before cutoff.

Compatibility: This DSI control board is the factory-specified replacement for the Carrier CP48P348P310010CP packaged unit. Verify your existing board's part number against LH33WP002 before ordering. If your data plate or existing board shows a different part number, contact our fitment team — we verify compatibility before every order to make sure you get the right part the first time. In stock and ready to ship today.