OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model PY3PEA048130NA

This is the factory OEM Direct Spark Ignition (DSI) Control Board for the Carrier PY3PEA048130NA packaged gas/electric unit. The DSI control board serves as the command center for the entire ignition sequence — it monitors the inducer, sequences the gas valve, fires the spark igniter, and verifies flame establishment via the flame sensor circuit. When this board fails, symptoms typically include a complete no-heat condition, repeated ignition lockouts, error codes on the system board, or a furnace that sparks but refuses to light and shuts down after one or two failed ignition attempts. Replacing it with a genuine OEM board ensures factory-exact timing and safety logic are fully restored.

• Part Number: LH33WP002 | Replaces: LH33WP002A | OEM Direct Spark Ignition (DSI) Control Board | 460V rated | Factory-matched relay ratings and timing sequences
• OEM vs Generic: This is a genuine Carrier OEM board with factory-programmed ignition timing, safety lockout thresholds, and relay specifications. Aftermarket boards frequently use mismatched timing logic, which can cause nuisance lockouts, premature component failure, or unsafe operation — especially on gas-fired equipment.
• Install Difficulty: 3/5 — Requires shutting off gas supply and 120V power before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, phone or camera to photograph all wiring connections prior to removal. Label every connector. A multimeter is recommended to confirm 24V control voltage is present before condemning the board.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Engineered as the direct OEM replacement for the Carrier PY3PEA048130NA packaged unit. Also fits a wide range of Carrier 48-series packaged gas/electric rooftop units — verify your model data plate and existing board part number before ordering. Our fitment team is available to confirm compatibility before you buy. Order now — in stock and ships today.