OEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model PY3PEA036060NB

This OEM Direct Spark Ignition (DSI) control board is the factory-specified replacement for the Carrier PY3PEA036060NB packaged unit. The DSI control board serves as the nerve center of the heating system — orchestrating ignition sequencing, monitoring flame presence, managing inducer and blower timing, and protecting the system through lockout logic when unsafe conditions are detected. When this board fails, symptoms typically include a no-heat condition, repeated ignition lockouts, intermittent heating, or a system that attempts ignition but shuts down before establishing a stable flame.

• Specs: Direct Spark Ignition (DSI) control board | 460V application | OEM part number LH33WP002 | Supersedes LH33WP-002 | Weight: 0.66 lbs | Factory-matched firmware and timing sequences
• OEM vs Generic: OEM control boards carry factory-programmed ignition timing, lockout thresholds, and safety logic calibrated specifically for Carrier equipment. Aftermarket boards frequently use generic timing parameters that can cause nuisance lockouts, premature heat exchanger wear, or voided equipment warranties.
• Install Difficulty: 4/5 — Control board replacement involves working with 24V and 120V+ circuits. Disconnect all power before servicing. Photograph all wire harness connections before removal. Tools needed: #2 Phillips screwdriver, 1/4" and 5/16" nut drivers, needle-nose pliers, multimeter. Recommend verifying fault codes before replacement to confirm board failure.
• Warranty: 1-year OEM factory warranty. In stock — ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY3PEA036060NB packaged unit. Verify your OEM part number against your unit's data plate or wiring diagram before ordering. Part number LH33WP002 supersedes legacy suffix LH33WP-002 — both are the same board. Have questions about fitment? Our HVAC parts specialists verify compatibility before every order.