{"product_id":"carrier-py1ppb048090aaaa-control-board-cyc67p","title":"OEM Carrier DSI Control Board LH33WP003 for PY1PPB048090AAAA","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY1PPB048090AAAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM Direct Spark Ignition (DSI) control board for the \u003cstrong\u003eCarrier PY1PPB048090AAAA\u003c\/strong\u003e packaged gas\/electric unit. The DSI control board is the nerve center of the heating system — it orchestrates the entire ignition sequence by managing the combustion, blower, and indoor fan motors, while also controlling the spark igniter and gas valve. It simultaneously monitors ignition trial timing, flame sensing, and safety lockout conditions to prevent hazards. When this board fails, symptoms typically include a no-heat condition, repeated ignition lockout faults, failure to light after the trial-for-ignition period, or the system shutting down after only a few seconds of burner operation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e LH33WP003 | \u003cstrong\u003eDescription:\u003c\/strong\u003e Direct Spark Ignition (DSI) Control Board | \u003cstrong\u003eBrand:\u003c\/strong\u003e Carrier | Factory-original replacement, no modifications required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine Carrier OEM board, manufactured to exact factory specifications. Aftermarket boards may lack precise timing calibration for the DSI ignition sequence, risking nuisance lockouts, premature flame-sensor faults, or unsafe gas valve operation over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Disconnect power and gas before servicing. Tools needed: 1\/4\" and 5\/16\" nut drivers, needle-nose pliers, multimeter, phone\/camera to photograph all wiring harnesses before removal. Transfer wiring connectors one-at-a-time to avoid miswiring. Verify all safety interlocks re-seat properly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. Orders ship 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 Engineered as a direct OEM replacement for \u003cstrong\u003eCarrier model PY1PPB048090AAAA\u003c\/strong\u003e. Always verify your existing board's part number against LH33WP003 or LH33WP003A before ordering. Have a question about fitment? Our HVAC parts specialists confirm compatibility before you buy — reach out via chat or phone today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640796107123,"sku":"CARRIE-PY1PPB048090AAAA-CONTROL_BOARD-LH33WP003","price":367.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640796139891,"sku":"CARRIE-PY1PPB048090AAAA-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_3d55232f-1f96-456c-ac3d-008d63e24c5b.jpg?v=1775027947","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py1ppb048090aaaa-control-board-cyc67p","provider":"National HVAC Parts","version":"1.0","type":"link"}