OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model CP48P548P509010CP

This is the factory OEM Direct Spark Ignition (DSI) control board for the Carrier CP48P548P509010CP packaged gas/electric unit. The DSI control board serves as the central command module for the heating sequence — managing the ignition spark, gas valve timing, inducer motor operation, flame verification, and safety lockout logic. When this board fails, common symptoms include the unit failing to ignite, entering hard lockout after repeated ignition attempts, intermittent heating cycles, or a complete loss of heating function with no fault codes displayed on downstream controls.

• Specs: Direct Spark Ignition (DSI) design | OEM Part Number: LH33WP002 | 24V control circuit compatible | Factory-programmed ignition timing and lockout sequences pre-loaded
• OEM vs Generic: This is a genuine OEM Carrier board manufactured to exact factory specifications. Aftermarket DSI boards frequently ship with mis-matched ignition timing profiles and reduced component ratings, leading to nuisance lockouts, premature failure, and potential voiding of any remaining equipment warranty.
• Install Difficulty: 3/5 — Requires shutting off 120V power and gas supply before beginning. Tools needed: nut driver set, flathead and Phillips screwdrivers, needle-nose pliers, smartphone or camera to document wiring harness positions prior to disconnection. Recommend verifying all fault codes and LED blink sequences before replacing the board to rule out upstream causes such as a failed pressure switch or flame sensor.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Orders placed before cutoff ship same business day from our climate-controlled warehouse.

Compatibility: Engineered as a direct OEM replacement for the Carrier CP48P548P509010CP packaged unit. Always cross-reference the OEM part number LH33WP002 printed on your existing board's label before ordering to confirm an exact match. If you are unsure of fitment, our HVAC parts specialists are available to verify compatibility before you complete your purchase — same-day shipping available on in-stock orders.