OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY2PPB030060AA

This is the genuine OEM Direct Spark Ignition (DSI) control board for the Carrier PY2PPB030060AA packaged rooftop unit. As the brain of your heating system, this integrated ignition control board manages the entire combustion sequence — from initiating spark and opening the gas valve, to controlling blower and indoor fan motors, monitoring flame sensing, and executing safety lockout when a fault is detected. When this board fails, common symptoms include no-heat calls, ignition lockout after a trial period, erratic blower behavior, or a system that starts briefly then shuts down. Fault LED codes on the board itself can help pinpoint the failure before replacement.

• Specs: Direct Spark Ignition (DSI) microprocessor-based control | OEM Part# LH33WP003 | Carrier / Bryant compatible | Integrated ignition, gas valve, blower, and fan motor sequencing | Onboard LED status/fault code indicators for fast diagnostics
• OEM vs Generic: This is the factory-authorized OEM board engineered to Carrier's original design specifications, ensuring full compatibility and preserving system integrity. Aftermarket boards may lack proper timing calibration, increasing the risk of nuisance lockouts or premature failure.
• Install difficulty: 3/5 — Disconnect power and confirm 0V at the board before handling. Tools needed: nut driver set, needle-nose pliers, multimeter, phone/camera to photograph all wire connections before removal. Label every connector. Always verify gas valve wiring polarity before restoring power.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Designed for the Carrier PY2PPB030060AA packaged rooftop unit with Direct Spark Ignition. Verify your existing board's part number (LH33WP003 or LH33WP003A) against your unit's data plate before ordering. Need a fitment confirmation? Our HVAC parts specialists verify compatibility before you buy — contact us today and get your unit back up and running fast.