OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model PY1PEA048080AFBA

This is the genuine OEM Direct Spark Ignition (DSI) Control Board for the Carrier PY1PEA048080AFBA packaged gas/electric unit. As the brain of your heating system, the DSI control board manages the complete ignition sequence — from inducer motor startup and pressure switch verification through spark ignition, gas valve activation, and flame confirmation. When this board fails, common symptoms include a hard lockout with no ignition attempt, the system short-cycling immediately after startup, error codes indicating a failed ignition sequence, or complete loss of heating function with the cooling side still operational.

• Part Number: LH33WP002 (supersedes LH33WP002A) | Application: Direct Spark Ignition (DSI) Control | Voltage: 460V | Genuine Carrier OEM component
• OEM vs Generic: Factory OEM boards are programmed with Carrier's exact timing sequences, lockout logic, and fault diagnostics. Aftermarket substitutes often use generic firmware that can cause nuisance lockouts, improper ignition timing, or loss of fault-code functionality — shortening equipment life and voiding remaining warranties.
• Install Difficulty: 3/5 — Requires shutting off gas supply and 120V power before beginning. Tools needed: Phillips and flathead screwdrivers, needle-nose pliers, smartphone camera (photograph all wiring harness connections before removal). Label each connector. A multimeter is recommended to verify 24V control voltage at the board input prior to replacement.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse when ordered before cut-off time.

Compatibility: Engineered as the factory-specified replacement for Carrier PY1PEA048080AFBA and other Carrier, Bryant, and Payne models in the 48, 574, 580, 581, 582, 583, 588, 589, and PY series that use the LH33WP002 or LH33WP002A DSI control board. Always verify your unit's data plate and existing board part number before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order.