{"product_id":"carrier-py3pna048090ab-control-board-cyc67p","title":"OEM Carrier DSI Control Board LH33WP003 for PY3PNA048090AB","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY3PNA048090AB\u003c\/h1\u003e\u003cp\u003eThis is the OEM factory-specified \u003cstrong\u003eDirect Spark Ignition (DSI) Control Board\u003c\/strong\u003e for the \u003cstrong\u003eCarrier PY3PNA048090AB\u003c\/strong\u003e packaged rooftop unit. As the brain of the heating system, this microprocessor-based board manages the complete combustion sequence — controlling the spark igniter and gas valve, monitoring flame sensing, timing trial-for-ignition, and triggering safety lockout if an unsafe condition is detected. When this board fails, symptoms typically include a no-heat condition, repeated ignition lockout faults, erratic blower operation, or the unit failing to respond to thermostat calls for heat.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e LH33WP003 (also covers LH33WP003A) | Direct Spark Ignition (DSI) type | Microprocessor-based combustion controller | Factory-matched to Carrier PY3PNA048090AB specifications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine Carrier OEM board — not an aftermarket substitute. OEM boards ensure exact timing sequences, lockout logic, and connector compatibility, preventing secondary failures caused by mismatch in ignition trial timing or blower delays.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Disconnect power and gas before beginning. Tools needed: 1\/4\" and 5\/16\" nut drivers, needle-nose pliers, smartphone (photo all wiring harnesses before disconnecting). Label every connector. Verify all safety lockout LED codes before and after replacement to confirm diagnosis.\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 Engineered for the \u003cstrong\u003eCarrier PY3PNA048090AB\u003c\/strong\u003e packaged rooftop unit. Replaces OEM part numbers LH33WP003 and LH33WP003A. Confirm your existing board's part number on the label before ordering. Have questions about fitment? Our HVAC parts specialists verify compatibility before every order — contact us and we'll confirm before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640382312819,"sku":"CARRIE-PY3PNA048090AB-CONTROL_BOARD-LH33WP003","price":368.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640382345587,"sku":"CARRIE-PY3PNA048090AB-CONTROL_BOARD-LH33WP003-GEN","price":324.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-LH33WP003_95d18c70-7822-422c-85ed-3405f9a724c2.jpg?v=1775028144","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3pna048090ab-control-board-cyc67p","provider":"National HVAC Parts","version":"1.0","type":"link"}