OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY1PNA030060ADBA

This is the factory OEM Direct Spark Ignition (DSI) control board for the Carrier PY1PNA030060ADBA packaged unit. The DSI control board is the operational brain of your unit's heating system — it sequences the inducer motor, manages direct spark ignition timing, monitors flame status, and enforces safety lockouts. Common failure symptoms include a complete no-heat condition, repeated ignition lockout fault codes, intermittent heating cycles, or the unit failing to respond to thermostat calls for heat. Replacing with the exact OEM board (part number LH33WP003) ensures all timing sequences, fault detection thresholds, and safety logic match factory specifications precisely.

• Specs: Direct Spark Ignition (DSI) control board | OEM Part Number: LH33WP003 | Factory-matched ignition timing and safety lockout logic | Compatible with 24V control circuit
• OEM vs Generic: This is a genuine OEM Carrier board, not a generic or aftermarket substitute. OEM boards carry factory-programmed firmware and tolerance-matched components. Generic control boards frequently cause nuisance lockouts, improper ignition sequencing, and may void equipment warranties.
• Install Difficulty: 3/5 — Requires disconnecting power and gas before beginning. Tools needed: Phillips and flat-head screwdrivers, needle-nose pliers, a phone or camera to photograph all wiring harness connections before removal. We strongly recommend consulting a licensed HVAC technician for control board replacements.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Engineered as the direct OEM replacement for Carrier model PY1PNA030060ADBA packaged units. Always cross-reference the OEM part number LH33WP003 printed on your existing board's label before ordering to confirm exact fitment. Have questions about compatibility? Our HVAC parts specialists verify fitment before every order — contact us today and we'll ship your part the same business day.