{"product_id":"carrier-py1rja048074aawb-control-board-cyc67p","title":"OEM Carrier DSI Control Board LH33WP003 for PY1RJA048074AAWB","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY1RJA048074AAWB\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM \u003cstrong\u003eDirect Spark Ignition (DSI) Control Board\u003c\/strong\u003e for the \u003cstrong\u003eCarrier PY1RJA048074AAWB\u003c\/strong\u003e packaged unit. The DSI control board is the brain of your system's heating sequence — it orchestrates the inducer motor, spark igniter, gas valve, and flame-sensing circuit in precise timed steps. When this board fails, common symptoms include a system that locks out after one or more ignition attempts, a furnace that runs the inducer but never sparks, fault codes indicating ignition failure, or a unit that simply delivers no heat despite the thermostat calling for it.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Direct Spark Ignition (DSI) control board | OEM part number LH33WP003 | Factory-matched timing sequences, voltage thresholds, and fault-lockout logic for Carrier \u003cstrong\u003ePY1RJA048074AAWB\u003c\/strong\u003e\n\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 carry factory-calibrated ignition timing and flame-sense sensitivity. Generic boards frequently exhibit nuisance lockouts, incompatible fault codes, and shortened service life due to tolerance mismatches.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Requires disconnecting 24V low-voltage and 120V line-voltage connectors. Tools needed: 1\/4\" and 5\/16\" nut drivers, needle-nose pliers, phone\/camera to photograph all wiring before removal. Always disconnect power at the disconnect and verify with a multimeter before touching any terminals. If fault codes were present before failure, document them first.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for \u003cstrong\u003eCarrier model PY1RJA048074AAWB\u003c\/strong\u003e packaged units. Always cross-reference the part number on your existing board's label before ordering to confirm an exact match. Our fitment team is available to verify compatibility before you purchase — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640673128819,"sku":"CARRIE-PY1RJA048074AAWB-CONTROL_BOARD-LH33WP003","price":187.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640673161587,"sku":"CARRIE-PY1RJA048074AAWB-CONTROL_BOARD-LH33WP003-GEN","price":165.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-LH33WP003_bc957089-08a1-48c8-83c5-dd58b06af9aa.jpg?v=1775027963","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py1rja048074aawb-control-board-cyc67p","provider":"National HVAC Parts","version":"1.0","type":"link"}