OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY1PNB060130AAAA

This OEM Direct Spark Ignition (DSI) control board is the factory-specified replacement for the Carrier PY1PNB060130AAAA packaged gas/electric unit. The DSI control board serves as the brain of the furnace's ignition and safety system — it sequences the inducer motor, opens the gas valve, fires the direct spark igniter, monitors flame presence, and shuts the system down safely if any fault condition is detected. Common failure symptoms include a hard lockout with no ignition attempt, intermittent no-heat calls, the burner lighting then immediately shutting off, or the system cycling repeatedly without establishing heat.

• Specs: Direct Spark Ignition (DSI) control | OEM Part Number: LH33WP003 | Factory-matched timing sequences and safety lockout thresholds | Compatible with 24V control circuit
• OEM vs Generic: This is a genuine Carrier OEM board, manufactured to exact factory specifications. Aftermarket boards often have mismatched ignition timing windows and trip thresholds that cause nuisance lockouts, void equipment warranties, and can compromise system safety.
• Install Difficulty: 3/5 — Shut off power and gas before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone/camera to photograph all wiring harness connections before disconnecting. Transfer wiring harnesses one connector at a time to avoid mis-wiring. Confirm all safety interlocks are reconnected before restoring power.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Ships same business day from our warehouse when ordered before 3PM local time.

Compatibility: Designed for the Carrier PY1PNB060130AAAA packaged gas/electric unit. Always verify your existing board's part number printed on the board label before ordering. If you are unsure of fitment, our HVAC parts specialists are available to confirm compatibility before you buy — same-day shipping on all in-stock OEM boards.