OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model PY1PEB048090AAAA

This is the genuine OEM Carrier Direct Spark Ignition (DSI) Control Board, part number LH33WP002, factory-specified for the Carrier PY1PEB048090AAAA packaged gas/electric unit. As the central intelligence of the heating system, this board manages the complete ignition sequence — energizing the inducer motor, proving pressure switches, firing the direct spark igniter, and monitoring the flame signal. When this board fails, you'll typically experience a hard lockout with no ignition attempt, intermittent no-heat calls, erratic burner cycling, or a system that sparks but never lights and then locks out after repeated trials.

• Specs: Direct Spark Ignition (DSI) control | 460V application | Replaces legacy part LH33WP002A | Manages multi-stage ignition sequence, inducer prove, and flame supervision
• OEM vs Generic: This is a genuine Carrier OEM board — not a third-party clone. OEM boards preserve factory-programmed timing delays, trial-for-ignition counts, and lockout logic. Aftermarket boards frequently introduce mismatched timing that causes nuisance lockouts or unsafe retry behavior.
• Install difficulty: 3/5 — Disconnect power and gas before beginning. Label and photograph all wiring harness connections before removal. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone camera for documentation. Clear any fault lockout codes after installation and verify full ignition cycle.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Engineered as the direct OEM replacement for Carrier PY1PEB048090AAAA packaged units. Also fits many Carrier, Bryant, and Payne models in the 48, 574, 580, 581, 582, 583, 588, 589, and PY series — confirm your unit's part number on the data plate or wiring diagram before ordering. Our fitment team is available to verify compatibility before you buy.