OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model PY2PEB060090NB

This is the genuine OEM Carrier Direct Spark Ignition (DSI) control board, part number LH33WP002, factory-specified for the Carrier PY2PEB060090NB packaged gas/electric unit. The DSI control board serves as the brain of your heating system — managing the ignition sequence, proving flame via the flame sensor circuit, orchestrating the inducer and blower motor staging, and executing safety lockout protocols. When this board fails, common symptoms include a complete no-heat condition, repeated ignition lockout fault codes, failure to initiate the spark ignition sequence, or erratic cycling where the unit lights briefly then shuts down and locks out. Replacing this board with a genuine OEM unit restores factory-exact logic and timing, ensuring reliable, safe operation.

• Specs: Direct Spark Ignition (DSI) design | 460V application | Replaces superseded part LH33WP002A | Factory-matched timing and lockout parameters
• OEM vs Generic: OEM control boards carry factory-programmed ignition timing, safety thresholds, and lockout sequences. Aftermarket boards frequently use approximated logic that can cause nuisance lockouts, shortened component life, or — in worst cases — unsafe operation. This is one part where OEM is strongly recommended.
• Install difficulty: 3/5 — Shut off gas supply and disconnect power before beginning. Tools needed: 1/4" and 5/16" nut drivers, flathead screwdriver, phone/camera for wiring photos. Photograph all wire harness connections and terminal labels before removal. Match wire-for-wire on reinstall. A final ignition cycle test is required to confirm operation.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Engineered for the Carrier PY2PEB060090NB packaged unit. Also fits select Carrier, Bryant, and Payne models in the 48, 574, 580, 581, 582, 583, 588, 589, and PY series that share the LH33WP002 specification — verify your unit's data plate and wiring diagram before ordering. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you buy — contact us today. In stock and ready to ship.