{"product_id":"carrier-py1pna048120aeba-control-board-cyc67p","title":"OEM Carrier DSI Control Board LH33WP003 for PY1PNA048120AEBA","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY1PNA048120AEBA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Direct Spark Ignition (DSI) control board for the \u003cstrong\u003eCarrier PY1PNA048120AEBA\u003c\/strong\u003e packaged unit. Acting as the brain of your heating system, this microprocessor-based board orchestrates the entire combustion sequence — controlling the spark igniter, gas valve, blower motor, and indoor fan motor while continuously monitoring flame sensing, safety lockout timing, and trial-for-ignition sequences. When this board fails, symptoms typically include a no-heat condition, repeated ignition lockouts, short cycling, or a blower that runs but never fires the burner.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e LH33WP003 (also covers LH33WP003A revision) | Direct Spark Ignition (DSI) microprocessor-based control | Factory-original Carrier specification for model \u003cstrong\u003ePY1PNA048120AEBA\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This factory-original board is pre-calibrated to exact Carrier ignition timing, lockout delay, and blower-off delay parameters. Aftermarket boards may use approximate timing that accelerates heat exchanger fatigue and can cause nuisance lockouts not present with the OEM board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Requires shutting off gas supply and 120V power at the disconnect before beginning. Tools needed: #2 Phillips screwdriver, 1\/4\" nut driver, needle-nose pliers, camera or phone to photograph all wiring harness connections before removal. Note and transfer all DIP switch settings from the original board to the replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. Ships same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as the factory-specified DSI control board replacement for Carrier model \u003cstrong\u003ePY1PNA048120AEBA\u003c\/strong\u003e. Always verify the part number printed on your existing board before ordering. Not sure it fits? Our HVAC parts team confirms fitment before you buy — contact us with your full model and serial number.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640932585843,"sku":"CARRIE-PY1PNA048120AEBA-CONTROL_BOARD-LH33WP003","price":367.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640932618611,"sku":"CARRIE-PY1PNA048120AEBA-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_c4154059-6ef3-4157-a7bd-fcd2e0a85a2c.jpg?v=1775027889","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py1pna048120aeba-control-board-cyc67p","provider":"National HVAC Parts","version":"1.0","type":"link"}