{"product_id":"carrier-py1pjb048090nbaa-control-board-cyc67p","title":"OEM Carrier DSI Control Board LH33WP003 — PY1PJB048090NBAA","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY1PJB048090NBAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM \u003cstrong\u003eDirect Spark Ignition (DSI) Control Board\u003c\/strong\u003e (part number \u003cstrong\u003eLH33WP003\u003c\/strong\u003e) for the Carrier \u003cstrong\u003ePY1PJB048090NBAA\u003c\/strong\u003e packaged gas\/electric unit. As the brain of the heating system, this microprocessor-based board orchestrates the entire combustion sequence — controlling the spark igniter and gas valve, monitoring trial-for-ignition timing, supervising flame sensing, and initiating safety lockout when an unsafe condition is detected. When this board fails, common symptoms include: no-heat calls with ignition lockout fault codes, the system starting then shutting down within seconds (flame-sense failure), blower or inducer motor not responding, or a completely unresponsive unit with no LED fault codes at all.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e LH33WP003 (also supersedes LH33WP003A) | Factory-direct replacement, no modifications required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoard Functions:\u003c\/strong\u003e Controls combustion sequence, spark igniter, gas valve, blower motor, and indoor motor | Monitors ignition trial timing, flame sensing, and safety lockout per factory logic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Disconnect power and gas before beginning. Tools needed: 1\/4\" and 5\/16\" nut drivers, needle-nose pliers, phone or camera to photograph all wiring harness connections prior to removal. Transfer wiring harness connectors one at a time to avoid miswiring.\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 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Factory-matched for Carrier model \u003cstrong\u003ePY1PJB048090NBAA\u003c\/strong\u003e packaged rooftop unit. Also fits select Carrier, Bryant, and Payne packaged units sharing the LH33WP003\/LH33WP003A board specification — verify your unit's part number on the control board or data plate before ordering. Our HVAC parts team is available to confirm fitment before you purchase.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641013784947,"sku":"CARRIE-PY1PJB048090NBAA-CONTROL_BOARD-LH33WP003","price":379.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641013817715,"sku":"CARRIE-PY1PJB048090NBAA-CONTROL_BOARD-LH33WP003-GEN","price":333.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-LH33WP003_996b8fb5-6d3e-4dbd-bc21-ec2bb55c8cc7.jpg?v=1775028239","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py1pjb048090nbaa-control-board-cyc67p","provider":"National HVAC Parts","version":"1.0","type":"link"}