{"product_id":"carrier-py1rpa048115aawb-control-board-cyc67p","title":"OEM Carrier DSI Control Board LH33WP003 for PY1RPA048115AAWB","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY1RPA048115AAWB\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 PY1RPA048115AAWB\u003c\/strong\u003e packaged rooftop unit. As the central brain of the heating system, this microprocessor-based board orchestrates the entire combustion sequence — controlling the spark igniter and gas valve, managing blower and indoor motor operation, and continuously monitoring flame sensing, trial-for-ignition timing, and safety lockout conditions. When this board fails, common symptoms include a complete no-heat situation, repeated ignition lockouts, erratic blower behavior, or a system that sparks but never establishes a flame.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e LH33WP003 (also supersedes LH33WP003A) | Direct Spark Ignition (DSI) type | Microprocessor-based combustion sequencer | Factory-matched for Carrier PY1RPA048115AAWB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This genuine Carrier OEM board is pre-calibrated to factory ignition timing and lockout thresholds. Aftermarket boards may use generic timing sequences that cause nuisance lockouts, misfire conditions, or shortened heat exchanger life — always choose OEM for commercial rooftop applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 4\/5\u003c\/strong\u003e — Control board replacement on a packaged rooftop unit requires disconnecting 120V and 24V wiring harnesses, documenting all connector positions before removal, and verifying proper DIP switch or jumper settings on the new board. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, camera or phone for wiring photos. Recommend a qualified HVAC technician for this repair.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before 3PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as the direct OEM replacement for \u003cstrong\u003eCarrier model PY1RPA048115AAWB\u003c\/strong\u003e packaged rooftop units. Also fits additional Carrier, Bryant, and ICP rooftop platform models that use the LH33WP003\/LH33WP003A 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":62640653533555,"sku":"CARRIE-PY1RPA048115AAWB-CONTROL_BOARD-LH33WP003","price":367.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640653566323,"sku":"CARRIE-PY1RPA048115AAWB-CONTROL_BOARD-LH33WP003-GEN","price":323.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-LH33WP003_cbd0d91d-d2a8-4c1a-94f2-6e76841c25fb.jpg?v=1775027983","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py1rpa048115aawb-control-board-cyc67p","provider":"National HVAC Parts","version":"1.0","type":"link"}