{"product_id":"carrier-py3ppa036090na-control-board-cyc67p","title":"OEM Carrier DSI Control Board LH33WP003 for PY3PPA036090NA","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY3PPA036090NA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM Direct Spark Ignition (DSI) control board for the \u003cstrong\u003eCarrier PY3PPA036090NA\u003c\/strong\u003e packaged unit. As the nerve center of the heating system, this board orchestrates every stage of the ignition sequence — energizing the inducer, proving the pressure switch, triggering the direct spark igniter, verifying flame establishment, and opening the gas valve. When this board fails, symptoms include a complete no-heat condition, repeated ignition lockouts, failure to advance through the heating cycle, or erratic error codes on diagnostic LEDs. Replacing it with the correct OEM part ensures all timing sequences, fault thresholds, and safety shutdowns are factory-matched.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 24 VAC control circuit | 208\/230 VAC 60 Hz line voltage input | Direct Spark Ignition (DSI) sequence | Replaces LH33WP003 and LH33WP003A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM boards preserve exact ignition timing intervals and safety lockout thresholds. Aftermarket boards may deviate on trial-for-ignition timing, risking nuisance lockouts or — in rare cases — unsafe ignition sequences. OEM is always the recommended choice for packaged commercial units.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Disconnect power and gas before beginning. Label all low-voltage wiring harness connections before removal. Tools needed: 1\/4\" and 5\/16\" nut drivers, needle-nose pliers, smartphone for wiring photo documentation. Firmware or DIP switch settings (if present) should be matched to the original board before power-up.\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 Designed for the Carrier \u003cstrong\u003ePY3PPA036090NA\u003c\/strong\u003e packaged unit. Also cross-references OEM suffix variant LH33WP003A. Verify your unit's data plate and existing board part number before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order if you have any questions. \u003cstrong\u003eIn stock and ready to ship today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640360292723,"sku":"CARRIE-PY3PPA036090NA-CONTROL_BOARD-LH33WP003","price":375.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640360325491,"sku":"CARRIE-PY3PPA036090NA-CONTROL_BOARD-LH33WP003-GEN","price":330.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-LH33WP003_a933580a-0011-4ed4-b7be-2428230b45b2.jpg?v=1775028193","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3ppa036090na-control-board-cyc67p","provider":"National HVAC Parts","version":"1.0","type":"link"}