OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY2PPB060130AA

This is the OEM Direct Spark Ignition (DSI) control board for the Carrier PY2PPB060130AA packaged gas/electric unit. This microprocessor-based board controls combustion, blower, and indoor motors, the spark igniter, and the gas valve — while continuously monitoring ignition timing, trial-for-ignition sequences, flame sensing, and lockout conditions. When this board fails, your system may exhibit a no-heat lockout, fail to spark on ignition attempts, shut down immediately after ignition, or display a fault code indicating control board failure.

• OEM Part Number: LH33WP003 | Direct Spark Ignition (DSI) Control Board | Factory-original Carrier component
• OEM vs Generic: This OEM control board monitors safety sensors to detect unsafe conditions and shuts down the system if necessary to prevent hazards — a function that generic aftermarket boards may not replicate with full accuracy, risking nuisance lockouts or, worse, unsafe operation.
• Install Difficulty: 3/5 — Disconnect power at the breaker before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone or camera to photograph all wiring harness connections before removal. Transfer wiring harnesses one connector at a time to avoid miswiring. Restore power and verify all operational sequences.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY2PPB060130AA packaged unit. Verify the part number on your existing board's label before ordering. Compatible with LH33WP003 and LH33WP003A revisions. Questions about fitment? Our HVAC parts specialists confirm compatibility before your order ships — same-day if ordered before 3 PM.