OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model PY1PEA042080ACBA

This is the genuine OEM Carrier Direct Spark Ignition (DSI) control board, part number LH33WP002, factory-specified for the Carrier PY1PEA042080ACBA packaged heating and cooling unit. The DSI control board serves as the central intelligence of the furnace section, orchestrating the complete ignition sequence — from inducer startup and pressure switch verification to spark ignition, flame sensing, and gas valve operation. When this board fails, the result is typically a hard lockout with no heat, repeated failed ignition attempts, or fault codes indicating a failed ignition sequence or pressure switch error.

• Specs: Direct Spark Ignition (DSI) control | 460V ignition control module | Factory-matched timing and logic for Carrier packaged units | OEM part number LH33WP002 (supersedes LH33WP-002)
• OEM vs Generic: This is a genuine Carrier OEM board with factory-calibrated ignition timing, lockout thresholds, and fault sequencing. Aftermarket boards may carry mismatched trial-for-ignition timing or incompatible pressure switch logic, creating unsafe or unreliable operation.
• Install difficulty: 3/5 — Disconnect power and gas supply before beginning. Tools needed: 1/4" and 5/16" nut drivers, needle-nose pliers, phone/camera to photograph all wiring harness connections prior to disconnection. Match all connector positions exactly. Re-verify all wiring before restoring power.
• Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY1PEA042080ACBA packaged unit. Verify your existing board's part number against LH33WP002 or its cross-reference LH33WP-002 before ordering. If you have any questions about fitment, our HVAC parts specialists are available to confirm compatibility before you buy — call or chat today. Orders placed before cutoff ship same day.