OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model CP48P548P505011CP

This is the factory OEM Direct Spark Ignition (DSI) control board for the Carrier CP48P548P505011CP packaged gas/electric unit. The DSI control board is the brain of the heating system — it sequences the inducer motor, manages spark ignition timing, monitors the flame sensor signal, and controls gas valve operation. When this board fails, symptoms typically include repeated ignition lockouts, no-heat calls despite thermostat demand, fault codes indicating ignition or flame-sensing failure, or a system that sparks briefly then shuts down without establishing flame.

• Specs: Direct Spark Ignition (DSI) control board | OEM part number LH33WP002 | 24V control circuit compatible | Factory-programmed ignition timing and lockout logic for Carrier CP48P548P505011CP
• OEM vs Generic: This is a genuine OEM Carrier board pre-programmed with exact ignition timing, trial-for-ignition duration, and lockout sequences specified for the CP48P548P505011CP. Aftermarket boards may use generic logic that causes nuisance lockouts, mis-timed sparks, or void your equipment warranty.
• Install difficulty: 3/5 — Disconnect power and gas before beginning. Tools needed: 1/4" and 5/16" nut drivers, Phillips screwdriver, multimeter, phone/camera to photograph all wiring harness connections before removal. Label every connector. Board mounts on standoffs — take care not to crack the PCB during removal.
• Warranty: 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our stocked warehouse.

Compatibility: Engineered specifically for the Carrier CP48P548P505011CP packaged unit. Verify OEM part number LH33WP002 on your existing board's label before ordering. If your board shows a different part number, contact our fitment team — we verify compatibility before you buy. In stock and ready to ship today.