OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY1PNA060080ADBA

This is the genuine OEM Carrier Direct Spark Ignition (DSI) control board, part number LH33WP003, factory-specified for the Carrier PY1PNA060080ADBA packaged unit. The DSI control board is the operational brain of your heating system — it manages spark ignition sequencing, gas valve activation, combustion blower and indoor fan motor control, flame sensing, and safety lockout routines. When this board fails, symptoms typically include a no-heat condition, repeated ignition lockout after a failed ignition trial, the system starting then shutting off within seconds, or complete loss of blower and heating function.

• Part Type: Direct Spark Ignition (DSI) Integrated Furnace Control (IFC) Board | OEM Part # LH33WP003 | Microprocessor-based design with onboard LED fault code diagnostics
• OEM vs Generic: This is a genuine Carrier OEM board manufactured to exact factory specifications, ensuring full compatibility with all safety sensors, timing sequences, and wiring harnesses on the PY1PNA060080ADBA. Aftermarket boards may require wiring modifications and often lack the precise lockout timing required by the original design.
• Install Difficulty: 3/5 — Disconnect power and gas supply before beginning. Tools needed: flat-head and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, phone/camera to photograph all wiring connections prior to removal. Transfer wiring harnesses one connector at a time to avoid miswiring. Verify all fault codes are cleared after installation.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse — in stock and ready now.

Compatibility: Engineered as the factory replacement for Carrier model PY1PNA060080ADBA. Before ordering, confirm the OEM part number on the board label inside your unit matches LH33WP003 or LH33WP003A. Not sure? Our HVAC parts specialists verify fitment before you order — contact us with your model and serial number.