OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model PY1PEB036060NBAA

This is the genuine OEM Carrier Direct Spark Ignition (DSI) Control Board, part number LH33WP002, factory-specified for the Carrier PY1PEB036060NBAA packaged gas/electric unit. As the brain of your heating system, this board manages the entire ignition sequence — commanding the spark igniter, monitoring flame sensing, controlling the gas valve, and sequencing the blower and inducer motors. When this board fails, you'll typically experience a no-heat lockout condition, repeated ignition attempts without flame establishment, erratic blower behavior, or a system that fails to advance past the pre-purge stage. Do not attempt to bypass or patch a failed DSI board — precise timing and safety lockouts are critical to safe furnace operation.

• Part Specs: Direct Spark Ignition (DSI) board | OEM Part # LH33WP002 (replaces LH33WP002A) | 460V ignition control module | Microprocessor-based sequencing with flame sensing and safety lockout logic
• OEM vs Generic: This is a genuine Carrier OEM board — factory-programmed with exact trial-for-ignition timing, lockout thresholds, and blower delay profiles matched to the PY1PEB036060NBAA. Third-party boards may use generalized timing that can cause nuisance lockouts, unsafe retry sequences, or reduced component lifespan.
• Install Difficulty: 4/5 — Requires disconnecting 120V/24V wiring harnesses and documenting all terminal connections before removal. Tools needed: flat-head and Phillips screwdrivers, needle-nose pliers, phone/camera to photograph wiring. Always shut off gas supply and disconnect power at the disconnect box before beginning. Recommended for qualified HVAC technicians.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed for the Carrier PY1PEB036060NBAA packaged unit. Also used across Carrier, Bryant, and Payne models in the 48, 574, 580, 581, 582, 583, 588, 589, and PY series. Always verify your existing board's part number against the data plate inside the unit before ordering. Have a question about fitment? Our HVAC parts specialists verify compatibility before you buy — reach out before placing your order and ship same day with confidence.