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This is the genuine OEM Carrier LH33WP002 Direct Spark Ignition (DSI) Control Board — the factory-specified replacement for the Carrier PY3PEA060130NA packaged gas unit. The DSI control board is the central command center of the heating system: it sequences the inducer motor, manages spark ignition timing, monitors the flame sensor signal, and enforces safety lockout protocols. When this board fails, symptoms typically include a complete no-heat condition, repeated ignition lockout faults, burners that light and immediately shut down, or error codes indicating a failed ignition sequence. Replacing it with a genuine OEM board ensures the exact timing parameters and safety thresholds your unit was engineered to require.
Compatibility: Designed for the Carrier PY3PEA060130NA packaged gas/electric unit. Also fits select Carrier, Bryant, and Payne models in the 48, 574, 580, 581, 582, 583, 588, 589, and PY series — verify your unit's data plate and existing board part number before ordering. Our fitment specialists are available to confirm compatibility. Order now — in stock and ships today.