OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY2PPB060090NB

This is the OEM factory-specified Direct Spark Ignition (DSI) Control Board for the Carrier PY2PPB060090NB packaged unit. The DSI control board is the central intelligence of the furnace section — it sequences the inducer motor, ignition spark, gas valve, and blower in precise timing cycles. When this board fails, the unit may lock out after ignition attempts, fail to call for heat entirely, display fault codes, or cycle erratically. Replacing it with the exact OEM part (LH33WP003) ensures factory timing logic is fully restored.

• Specs: Direct Spark Ignition (DSI) logic board | Part No. LH33WP003 | 24V control circuit compatible | Includes integrated fault code diagnostics LED
• OEM vs Generic: OEM boards ship pre-programmed with Carrier's exact ignition timing and safety lockout thresholds. Aftermarket boards may use generic timing profiles that reduce system efficiency, trigger nuisance lockouts, or void manufacturer warranties.
• Install Difficulty: 3/5 — Requires shutting off gas and power at the disconnect before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, multimeter, phone or camera to photograph all wiring harness connections prior to removal. Note all jumper settings on the old board before swapping.
• Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered as the direct OEM replacement for Carrier model PY2PPB060090NB packaged units. Always cross-reference the part number on your existing board's label and confirm your unit's data plate before ordering. Our HVAC parts specialists are available to verify fitment — contact us before you buy if you have any questions.