OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model CP48P548P505510CP

This is the factory OEM Direct Spark Ignition (DSI) control board for the Carrier CP48P548P505510CP packaged heating and cooling unit. The DSI control board serves as the brain of the heating system, managing the ignition sequence, gas valve timing, inducer motor operation, and safety lockout logic. When this board fails, common symptoms include a system that sparks but won't light, repeated ignition lockouts, a furnace that fails to respond to thermostat calls for heat, or erratic cycling behavior that cannot be traced to any individual component.

• Specs: OEM Part Number LH33WP002 | Direct Spark Ignition (DSI) control | 24V control circuit | Compatible with standard IFC wiring harness on Carrier CP48P548P505510CP packaged units | Factory-programmed ignition timing and safety lockout sequences
• OEM vs Generic: This is a genuine Carrier OEM board with factory-programmed DSI logic. Generic or aftermarket boards may differ in lockout timing, spark duration, and safety thresholds — deviations that can void equipment warranties, cause nuisance lockouts, or create unsafe operating conditions. OEM is always the recommended choice for control boards.
• Install Difficulty: 3/5 — Requires disconnecting 120V and 24V wiring harnesses, documenting all terminal connections before removal, and careful transfer of wires to the replacement board. Tools needed: Phillips and flathead screwdrivers, needle-nose pliers, multimeter, smartphone for photos of existing wiring. Always shut off power at the disconnect and breaker before beginning work.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse when ordered before 3PM local time.

Compatibility: This board is factory-specified for the Carrier CP48P548P505510CP packaged unit. Always verify 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 purchase. Order today for same-day shipping and get your system back up and running fast.