OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model PY2PEB036090AA

This is the genuine OEM Carrier Direct Spark Ignition (DSI) Control Board (part number LH33WP002), the factory-specified replacement for the Carrier PY2PEB036090AA packaged gas/electric unit. The DSI control board is the brain of your heating system — it sequences the inducer motor, manages spark ignition timing, monitors the flame sensor signal, and orchestrates all safety lockout logic. When this board fails, symptoms typically include a complete no-heat condition, repeated ignition lockouts, an inducer that runs but no spark is produced, or a system that attempts ignition and immediately faults out without establishing a flame.

• Specs: Direct Spark Ignition (DSI) control board | 460V application | OEM part number LH33WP002 | Supersedes LH33WP002A | Factory-matched timing and lockout parameters for Carrier PY-series packaged units
• OEM vs Generic: This is a genuine Carrier OEM board — not an aftermarket substitute. OEM boards carry the exact spark timing curves, flame-sense sensitivity thresholds, and lockout delays programmed for your unit. Aftermarket boards may use generalized firmware that causes nuisance lockouts, premature shutdowns, or voided equipment warranties.
• Install Difficulty: 3/5 — Disconnect all power before starting. Tools needed: #2 Phillips and flathead screwdrivers, 1/4" and 5/16" nut drivers, needle-nose pliers, phone or camera to photograph wiring harness connections before removal. Transfer all connectors one-by-one to avoid miswiring. Verify proper ignition sequence on first startup.
• Warranty: 1-year OEM manufacturer warranty. In-stock and ships same business day from our warehouse when ordered before cutoff.

Compatibility: Engineered for the Carrier PY2PEB036090AA packaged gas/electric unit. Also used across select Carrier, Bryant, and Payne models in the 48, 574, 580, 581, 582, 583, 588, 589, and PY series — verify your unit's data plate and existing board part number before ordering. Our fitment team is available to confirm compatibility prior to purchase.