{"product_id":"carrier-py3pna048115na-control-board-cyc67p","title":"OEM Carrier DSI Control Board LH33WP003 for PY3PNA048115NA","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY3PNA048115NA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM Direct Spark Ignition (DSI) control board for the \u003cstrong\u003eCarrier PY3PNA048115NA\u003c\/strong\u003e packaged unit. As the brain of the heating system, this microprocessor-based board orchestrates the entire combustion sequence — controlling the spark igniter, gas valve, combustion blower, and indoor fan motor. It also continuously monitors safety sensors to detect unsafe conditions and initiate system lockout when necessary. When the board fails, common symptoms include a no-heat condition, repeated ignition lockout faults, failure to prove flame, or the unit cycling on and off erratically without completing a full heating sequence.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e LH33WP003 (also supersedes LH33WP003A) | \u003cstrong\u003eType:\u003c\/strong\u003e Direct Spark Ignition (DSI) Control Board | \u003cstrong\u003eApplication:\u003c\/strong\u003e Carrier PY3PNA048115NA packaged rooftop unit | \u003cstrong\u003eBoard Style:\u003c\/strong\u003e Integrated Furnace Control (IFC) with LCP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine Carrier-sourced OEM board, factory-matched to your unit's exact timing sequences, lockout logic, and safety thresholds. Aftermarket boards may substitute components with looser tolerances, risking nuisance lockouts, improper gas valve timing, or premature failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Requires shutting off power and gas supply before beginning. Photograph all wiring harness connections before disconnecting. Tools needed: ¼\" nut driver, needle-nose pliers, multimeter. Always verify 24V control circuit is live before condemning the board. Consult the unit's wiring diagram located inside the cabinet door.\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 warehouse when ordered before 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as the direct OEM replacement for Carrier model \u003cstrong\u003ePY3PNA048115NA\u003c\/strong\u003e packaged units equipped with the LH33WP003 or LH33WP003A DSI control board. Verify your existing board's part number on the label before ordering. Not sure if this fits? Contact our HVAC parts specialists — we verify fitment before you buy. \u003cstrong\u003eIn stock and ships today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640378839411,"sku":"CARRIE-PY3PNA048115NA-CONTROL_BOARD-LH33WP003","price":373.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640378872179,"sku":"CARRIE-PY3PNA048115NA-CONTROL_BOARD-LH33WP003-GEN","price":328.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-LH33WP003_6075af05-e95d-4716-a4af-d01a0ae96839.jpg?v=1775028152","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3pna048115na-control-board-cyc67p","provider":"National HVAC Parts","version":"1.0","type":"link"}