{"product_id":"carrier-py2pnb048130aa-control-board-cyc67p","title":"OEM Carrier DSI Control Board LH33WP003 for PY2PNB048130AA","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY2PNB048130AA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM Direct Spark Ignition (DSI) control board for the \u003cstrong\u003eCarrier PY2PNB048130AA\u003c\/strong\u003e packaged rooftop unit. The DSI control board serves as the central brain of the heating system — managing spark ignition sequencing, gas valve activation, combustion blower and indoor fan motor operation, flame sensing, and safety lockout logic. When this board fails, common symptoms include a no-heat condition with repeated ignition attempts, the system locking out after failed ignition trials, erratic burner cycling, or a complete loss of heating function with no visible error response from the unit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e LH33WP003 | Carrier OEM Direct Spark Ignition (DSI) Integrated Circuit Board | Microprocessor-based design with LED status\/fault indicators for rapid field diagnostics\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine Carrier factory part — engineered to exact OEM specifications for full compatibility with the PY2PNB048130AA. Aftermarket boards may lack proper timing calibration, fault-code support, or safety interlock precision, risking nuisance lockouts or unsafe operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Board replacement requires disconnecting 24V control wiring, line-voltage harnesses, and flame sensor leads. Always de-energize the unit and photograph all wiring connections before removal. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Recommended for qualified HVAC technicians.\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 stocked warehouse — no waiting on special orders.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003ePY2PNB048130AA\u003c\/strong\u003e packaged rooftop unit. Verify your existing board's part number (LH33WP003 or LH33WP003A) against your unit's data plate before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640533635443,"sku":"CARRIE-PY2PNB048130AA-CONTROL_BOARD-LH33WP003","price":450.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640533668211,"sku":"CARRIE-PY2PNB048130AA-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_1516f23a-a01a-468b-81ed-12db20372f46.jpg?v=1775028043","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py2pnb048130aa-control-board-cyc67p","provider":"National HVAC Parts","version":"1.0","type":"link"}