OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model PY2PEB048090AA

This is the genuine OEM Direct Spark Ignition (DSI) Control Board for the Carrier PY2PEB048090AA packaged unit. The DSI control board is the operational brain of the heating system — it sequences the inducer motor, manages spark ignition timing, monitors the flame sensor signal, and controls the gas valve and blower outputs. When this board fails, common symptoms include a complete no-heat condition, repeated ignition lockouts, fault codes indicating ignition failure, short cycling after startup, or erratic blower behavior. Replacing it with the factory-correct OEM part ensures all safety lockout circuits, timing sequences, and diagnostic LED outputs perform exactly to Carrier's engineering specifications.

• Part Number: LH33WP002 (also supersedes LH33WP-002) | Application: Direct Spark Ignition (DSI) | Voltage: 460V | Carrier OEM factory replacement
• OEM vs Generic: OEM boards ship pre-programmed with Carrier's exact ignition timing, blower delay profiles, and safety lockout logic. Aftermarket boards frequently deviate on timing tolerances, risking nuisance lockouts, voided equipment warranties, and potential safety hazards.
• Install Difficulty: 4/5 — Requires full system power-down and discharge of capacitors before servicing. Label and photograph all wire harness connectors before removal. A multimeter and manifold gauge set are recommended to confirm system operation post-install. Recommend licensed HVAC technician for this repair.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Engineered as the factory-specified replacement for Carrier model PY2PEB048090AA. Always cross-reference the OEM part number on your existing board's label before ordering to confirm fitment. Our HVAC parts specialists are available to verify compatibility before you purchase — contact us with your full model and serial number.