{"product_id":"carrier-py2pnb030040aa-control-board-cyc67p","title":"OEM Carrier DSI Control Board LH33WP003 for PY2PNB030040AA","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY2PNB030040AA\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\u003ePY2PNB030040AA\u003c\/strong\u003e packaged heating unit. The DSI control board is the command center of the furnace or packaged unit's heating system — it sequences the inducer motor, spark ignition, gas valve, and flame verification in precise timing. When this board fails, common symptoms include a no-heat condition, repeated ignition lockout, burners that light and immediately shut off, or a unit that fails to advance past the inducer pre-purge stage.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Specs:\u003c\/strong\u003e Direct Spark Ignition (DSI) control board | OEM part number \u003cstrong\u003eLH33WP003\u003c\/strong\u003e | Factory-matched control logic for Carrier PY2PNB030040AA | 24V control circuit compatible\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM board — not an aftermarket substitute. OEM boards maintain exact ignition timing, lockout sequencing, and fault code diagnostics. Generic boards can introduce mismatched timing that causes nuisance lockouts or premature component wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Requires disconnecting power and gas before servicing. Tools needed: 1\/4\" and 5\/16\" nut drivers, needle-nose pliers, phone\/camera to photograph all wiring harness connections before removal. Match all connector positions exactly on reinstall. Recommend verifying 24V transformer output before condemning the board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders placed before 3PM ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e This board is engineered specifically for the Carrier \u003cstrong\u003ePY2PNB030040AA\u003c\/strong\u003e packaged unit. Always confirm the OEM part number on your existing board's label before ordering to ensure an exact fit. If you have any questions about compatibility, our HVAC parts specialists verify fitment before you order — no guesswork required. \u003cstrong\u003eIn stock and ships today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640546152819,"sku":"CARRIE-PY2PNB030040AA-CONTROL_BOARD-LH33WP003","price":200.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640546185587,"sku":"CARRIE-PY2PNB030040AA-CONTROL_BOARD-LH33WP003-GEN","price":176.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-LH33WP003_c13351b5-0966-49a9-a05b-8409c4a07fab.jpg?v=1775028023","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py2pnb030040aa-control-board-cyc67p","provider":"National HVAC Parts","version":"1.0","type":"link"}