OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model PY1PEB048115AAAA

This is the genuine OEM Carrier Direct Spark Ignition (DSI) control board, part number LH33WP002, factory-specified for the Carrier PY1PEB048115AAAA packaged unit. The DSI control board serves as the central command module for the heating system — it sequences the inducer motor, manages spark ignition timing, monitors flame sensing feedback, and executes safety shutdowns when fault conditions are detected. When this board fails, common symptoms include a hard lockout with no ignition attempt, intermittent no-heat calls, the unit sparking continuously without establishing flame, or error codes indicating an ignition control fault.

• Part Specs: OEM part number LH33WP002 | Direct Spark Ignition (DSI) control board | 460V ignition control module | Factory-matched for Carrier PY1PEB048115AAAA packaged HVAC equipment | Weight: 0.66 lbs
• OEM vs Generic: This is a genuine Carrier OEM board — not a third-party clone. OEM boards carry factory firmware and tolerance-matched components, ensuring proper ignition sequencing, safety lockout timing, and flame signal thresholds. Aftermarket boards frequently cause nuisance lockouts or unsafe ignition delays due to firmware mismatches.
• Install Difficulty: 3/5 — Requires disconnecting 24V and line-voltage connectors, photographing all wiring harness positions before removal, and verifying DIP switch or jumper settings match the original board. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, multimeter. Always cut power at the disconnect before servicing. Recommend licensed HVAC technician for packaged unit board replacement.
• Warranty & Shipping: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed for the Carrier PY1PEB048115AAAA packaged unit. Verify your existing board's part number against LH33WP002 or its updated revision LH33WP002A before ordering. If you need fitment confirmation, our parts team will verify compatibility before your order ships — just reach out before checkout.