{"product_id":"carrier-py1ppb036090nbaa-control-board-cyc67p","title":"OEM Carrier DSI Control Board LH33WP003 for PY1PPB036090NBAA","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY1PPB036090NBAA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier Direct Spark Ignition (DSI) control board, part number \u003cstrong\u003eLH33WP003\u003c\/strong\u003e, factory-specified for the \u003cstrong\u003eCarrier PY1PPB036090NBAA\u003c\/strong\u003e packaged rooftop unit. The DSI control board is the central intelligence of the heating system — it orchestrates spark ignition sequencing, gas valve activation, combustion blower and indoor fan motor operation, flame sensing, and safety lockout. When this board fails, symptoms typically include a no-heat condition, repeated ignition lockouts, burners lighting then immediately shutting off, or a complete loss of heating-stage response with no fault codes cycling on the system LEDs.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Type:\u003c\/strong\u003e Direct Spark Ignition (DSI) Integrated Furnace Control Board | OEM Part # \u003cstrong\u003eLH33WP003\u003c\/strong\u003e | Microprocessor-based design with onboard status LED diagnostics for fast fault identification\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM board manufactured to exact factory tolerances and sequencing logic. Aftermarket boards may use substitute timing parameters that cause nuisance lockouts, improper blower delays, or voided equipment warranties — OEM is always the correct choice for commercial rooftop applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Requires disconnection of line voltage and 24V control wiring. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, smartphone (photograph all wiring harness positions before removal). Recommended for qualified HVAC technicians. Always discharge capacitors and verify power is off before servicing the control compartment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse — get your unit back online fast.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the \u003cstrong\u003eCarrier PY1PPB036090NBAA\u003c\/strong\u003e packaged rooftop unit. Also fits a range of Carrier, Bryant, and ICP commercial rooftop models that use the LH33WP003 DSI control board — verify your unit's data plate and existing board part number before ordering. Our HVAC parts specialists are available to confirm fitment. \u003cstrong\u003eOrder now — in stock and ships today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640798171507,"sku":"CARRIE-PY1PPB036090NBAA-CONTROL_BOARD-LH33WP003","price":450.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640798204275,"sku":"CARRIE-PY1PPB036090NBAA-CONTROL_BOARD-LH33WP003-GEN","price":396.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-LH33WP003_4fa47c2e-2b8d-4e2f-a768-3fa3d1aa780f.jpg?v=1775027939","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py1ppb036090nbaa-control-board-cyc67p","provider":"National HVAC Parts","version":"1.0","type":"link"}