OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY2PPB060130NB

This is the genuine OEM Carrier LH33WP003 Direct Spark Ignition (DSI) control board — the factory-specified replacement for the Carrier PY2PPB060130NB packaged rooftop unit. The DSI control board is the brain of your heating system: it orchestrates spark ignition sequencing, gas valve activation, combustion blower, indoor fan motor operation, flame sensing, and safety lockout logic. When this board fails, symptoms typically include a no-heat condition, ignition lockout after trial-for-ignition, erratic blower behavior, or a unit that powers on but immediately shuts down with no flame established.

• Part Number: LH33WP003 | OEM Carrier Direct Spark Ignition (DSI) Integrated Control Board | Factory-matched to Carrier PY2PPB060130NB specifications
• OEM vs Generic: This is a genuine Carrier OEM board manufactured to original design standards, ensuring full compatibility, preserved safety lockout timing, and system warranty integrity. Aftermarket alternatives may have mismatched ignition trial timing or non-standard LED fault codes, complicating diagnostics.
• Install Difficulty: 3/5 — Disconnect power and gas before beginning. Label all wiring harness connectors before removal. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone camera for wiring photos. Recommended for qualified HVAC technicians due to high-voltage connections and gas system involvement.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Designed for the Carrier PY2PPB060130NB packaged rooftop unit. This board is also cross-referenced to Bryant and ICP rooftop units sharing the LH33WP003 specification — verify your unit's data plate and existing board part number before ordering. Our fitment team is available to confirm compatibility prior to purchase. Order now — in stock and ships today.