OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model PY1PEB060090AAAA

This is the genuine OEM Carrier Direct Spark Ignition (DSI) Control Board, part number LH33WP002, factory-specified for the Carrier PY1PEB060090AAAA packaged gas/electric unit. The DSI control board serves as the nerve center of your system's heating sequence — it orchestrates the spark igniter and gas valve, monitors flame sensing, manages inducer and blower motor timing, and executes safety lockout logic. When this board fails, you'll commonly experience a complete no-heat condition, repeated ignition lockouts, a burner that lights then shuts off within seconds, or an inducer that runs but never advances to the ignition trial stage.

• Part Number & Specs: OEM Part # LH33WP002 (replaces LH33WP002A) | Direct Spark Ignition (DSI) microprocessor-based board | Controls combustion sequencing, blower motor, spark igniter, and gas valve | 460V application | Factory-matched timing and lockout parameters
• OEM vs. Generic: This is a genuine Carrier factory part — not an aftermarket substitute. OEM boards carry exact firmware, relay ratings, and terminal configurations pre-matched to your PY1PEB060090AAAA unit. Generic boards may use mismatched lockout timing or inferior relay contacts that shorten system lifespan and can void equipment warranties.
• Install Difficulty: 3/5 — Requires disconnecting 24V and line-voltage connectors, labeling all wiring harnesses before removal, and transferring any jumper settings from the old board. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, smartphone for wiring photos. Always cut power at the disconnect and breaker before servicing. If unfamiliar with control board replacement, licensed HVAC technician service is recommended.
• Warranty & Shipping: Backed by Carrier's 1-year OEM parts warranty. In stock and ships same business day from our warehouse when ordered before cutoff. Free shipping available on qualifying orders.

Compatibility: Designed for the Carrier PY1PEB060090AAAA packaged gas/electric unit. Also used across many Carrier, Bryant, and Payne models in the 48, 574, 580, 581, 582, 583, 588, 589, and PY series — always verify your unit's data plate part number before ordering. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you buy — contact us today and get your system back up fast.