OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model PY3PEA060115NB

This is the genuine OEM Carrier Direct Spark Ignition (DSI) Control Board, part number LH33WP002, factory-specified for the Carrier PY3PEA060115NB packaged gas/electric unit. The DSI control board is the nerve center of the heating system — it sequences the inducer motor, manages spark ignition timing, monitors the flame sensor signal, and governs safety lockout logic. When this board fails, you'll typically experience a hard lockout with no ignition attempt, intermittent no-heat calls, or a system that sparks but never lights and shuts down on fault. Replacing with the correct OEM board restores factory ignition timing and safety thresholds precisely.

• Specs: Direct Spark Ignition (DSI) type | 460V application | Replaces superseded part LH33WP002A | Factory-matched ignition timing and lockout logic
• OEM vs Generic: OEM control boards carry exact firmware and component tolerances engineered for your unit. Aftermarket boards may use different trial-for-ignition timing or lockout sequences, risking nuisance faults or unsafe operation. Always choose OEM on control boards.
• Install difficulty: 3/5 — Disconnect power at the disconnect box and verify 0V before touching any board terminals. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone camera (photograph all wiring harness connections before removal). Label every connector. Confirm board mounting orientation matches original.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our stocked warehouse.

Compatibility: Designed for the Carrier PY3PEA060115NB packaged gas/electric rooftop unit. Also used across multiple Carrier, Bryant, and Payne packaged unit model series beginning with 48, 574, 580, 581, 582, 583, 588, 589, and PY prefixes — verify your unit's data plate and existing part number before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you buy. Order now — in stock and ships today.