OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model PY3PEA036090AA

This is the genuine OEM Direct Spark Ignition (DSI) control board for the Carrier PY3PEA036090AA packaged unit. As the brain of the heating system, this board manages the entire ignition sequence — energizing the inducer motor, monitoring pressure switches, firing the spark igniter, confirming flame signal, and opening the gas valve. When it fails, common symptoms include a hard lockout after repeated ignition attempts, a fault code indicating no ignition, the system attempting to light but shutting down immediately, or a complete no-heat condition with no ignition sequence initiated at all.

• Specs: Direct Spark Ignition (DSI) control | 460V application | OEM part number LH33WP002 | Replaces legacy revision LH33WP002A | Factory-matched timing sequences and lockout parameters
• OEM vs Generic: This is the genuine Carrier-manufactured board — not an aftermarket substitute. OEM boards retain exact ignition timing, lockout logic, and fault-code behavior. Generic boards risk mis-timed spark sequences, nuisance lockouts, and voided equipment warranties.
• Install difficulty: 3/5 — Shut off gas supply and 120V power before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone camera for wiring documentation. Photograph all connector positions before removal. Match DIP switch settings from old board to new board before powering up.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our climate-controlled warehouse.

Compatibility: Designed as the factory-specified replacement for Carrier model PY3PEA036090AA. Always verify your existing board's part number and voltage rating against your unit's data plate before ordering. Our parts specialists are available to confirm fitment — contact us before you buy for complete peace of mind.