OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY1PPB060090AAAA

This is the genuine OEM Direct Spark Ignition (DSI) control board (part# LH33WP003), the factory-specified replacement for the Carrier PY1PPB060090AAAA packaged gas/electric unit. The DSI control board is the central command module of your furnace section — it sequences the entire heating cycle by managing spark ignition, gas valve activation, inducer and blower motor timing, flame sensing, and safety lockout logic. When this board fails, common symptoms include a no-heat condition with the unit going into hard lockout, intermittent ignition failures, a furnace that starts then shuts down after a few seconds (failed flame sensing), or a completely unresponsive heating system with no LED fault codes displayed.

• Part Type: Direct Spark Ignition (DSI) Integrated Furnace Control Board | OEM Part# LH33WP003 | Fits Carrier PY1PPB060090AAAA packaged units
• OEM vs Generic: This factory-authorized OEM board is manufactured to Carrier's original design standards, ensuring full pin-for-pin compatibility, correct timing sequences, and preserved system warranty integrity. Generic aftermarket boards may introduce timing deviations that cause nuisance lockouts or accelerated component wear.
• Install Difficulty: 3/5 — Disconnect all power and gas before servicing. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone/camera for wiring documentation, and a multimeter for post-install verification. Photograph all wiring harness connections before removal. Microprocessor-based LED diagnostics on the board will confirm successful startup with fault code feedback.
• Warranty: 1-year OEM factory warranty. Qualifies for same-day shipping when ordered before cutoff. Includes factory LED diagnostic capability for faster future troubleshooting.

Compatibility: Designed as the direct OEM replacement for Carrier PY1PPB060090AAAA packaged heating and cooling units. Always verify the part number on your existing board's label before ordering — look for LH33WP003 or LH33WP003A printed on the board itself. Not sure it fits? Our HVAC parts specialists verify fitment before you order — contact us today and ship same business day.