OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model PY1REA150224ADWA

This OEM Direct Spark Ignition (DSI) control board is the factory-specified replacement for the Carrier PY1REA150224ADWA packaged unit. The DSI control board orchestrates the entire ignition sequence — managing spark timing, flame sensing, inducer prove-out, and safety lockout logic. When it fails, symptoms typically include a no-heat condition, repeated ignition lockout faults, erratic cycling, or a furnace that sparks but never establishes a stable flame.

• Specs: Direct Spark Ignition (DSI) control | OEM Part Number: LH33WP002 | Factory-matched timing and lockout parameters | Integrated flame sense circuit | 24V control voltage compatible
• OEM vs Generic: This OEM board ships with exact factory-programmed ignition timing, retry counts, and lockout thresholds. Aftermarket boards often use generic firmware that can cause nuisance lockouts, shortened igniter life, or failed safety sequences — risks not worth taking on a gas-fired appliance.
• Install Difficulty: 3/5 — Turn off gas and 120V power before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone camera (photograph all wiring harnesses before disconnecting). Label every connector. A basic multimeter is recommended to verify 24V control circuit continuity after installation.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Engineered specifically for the Carrier PY1REA150224ADWA packaged rooftop/combination unit. Always verify your OEM part number on the existing board's label or the unit's wiring diagram before ordering to confirm correct fitment. Our technical team is available to verify compatibility before you purchase — no guesswork required.