OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model PY3PEA060090AA

This is the genuine OEM Carrier Direct Spark Ignition (DSI) control board, part number LH33WP002, factory-specified for the Carrier PY3PEA060090AA packaged unit. As the brain of the heating system, this board manages the entire ignition sequence — from energizing the inducer and proving the pressure switch, to firing the spark ignitor, opening the gas valve, and monitoring the flame sensor signal. When this board fails, common symptoms include a hard lockout after repeated ignition attempts, a furnace that sparks but never lights, erratic cycling, or a complete no-heat condition with no obvious component fault.

• Specs: Direct Spark Ignition (DSI) control | 460V application | Genuine Carrier OEM part | Replaces superseded part number LH33WP002A
• OEM vs Generic: This is the factory-original board built to exact Carrier tolerances. Aftermarket boards may not replicate proprietary DSI timing sequences, lockout logic, or fault code outputs — risking repeat failures and voided equipment warranties.
• Install difficulty: 3/5 — Requires shutting off gas and 120V power before servicing. Label all low-voltage wiring connections before removing the old board. Tools needed: nut driver set, needle-nose pliers, multimeter. Recommend verifying inducer motor and pressure switch function before replacing the board to confirm root cause.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Fits Carrier model PY3PEA060090AA packaged gas/electric unit. This board is also used across multiple Carrier, Bryant, and Payne packaged and split systems in the 48, 574, 580, 581, 582, 583, 588, 589, and PY series — always verify your unit's data plate and existing board part number before ordering. Our fitment team is available to confirm compatibility before you purchase.