OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model PY1REA060115AAWB

This OEM Direct Spark Ignition (DSI) control board is the factory-specified replacement for the Carrier PY1REA060115AAWB packaged unit. As the brain of the heating system, the DSI control board manages the entire ignition sequence — energizing the inducer motor, proving pressure, firing the spark igniter, confirming flame, and opening the gas valve. When this board fails, you may experience a hard lockout with no heat, intermittent ignition failures, or a system that sparks but never lights. Fault codes on the board's LED indicator are your first diagnostic clue.

• Part Number: LH33WP002 (supersedes LH33WP-002) | Type: Direct Spark Ignition (DSI) Control Board | Voltage: 460V | Weight: 0.66 lbs | Factory OEM specification match
• OEM vs Generic: This is a genuine OEM Carrier board — not an aftermarket substitute. OEM boards are pre-programmed with Carrier's exact timing sequences, fault logic, and safety lockout thresholds. Aftermarket boards frequently cause nuisance lockouts or fail to meet safety codes.
• Install Difficulty: 3/5 — Disconnect all power before servicing. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, smartphone (photograph all wiring harness connections before removal). Transfer wiring harnesses one at a time to avoid miswiring. Always clear fault history after installation.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before cutoff. Free shipping on orders over $99.

Compatibility: Engineered as the factory-direct replacement for Carrier PY1REA060115AAWB packaged units. Also fits select 581BTV series models — verify your full model and serial number against your unit's data plate before ordering. Not sure it fits? Contact our HVAC parts specialists for a free fitment check before you buy.