{"product_id":"carrier-py1rea036074abwa-control-board-cyc67o","title":"OEM Carrier DSI Control Board LH33WP002 for PY1REA036074ABWA","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model PY1REA036074ABWA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier Direct Spark Ignition (DSI) Control Board, part number \u003cstrong\u003eLH33WP002\u003c\/strong\u003e, factory-specified for the \u003cstrong\u003eCarrier PY1REA036074ABWA\u003c\/strong\u003e packaged unit. The DSI control board is the nerve center of the heating system — it sequences the induced draft blower, manages spark ignition timing, monitors the flame sensor signal, and enforces safety lockout protocols. When this board fails, common symptoms include a no-heat condition, repeated ignition lockout faults, failure to prove flame, erratic burner cycling, or a completely unresponsive heating sequence despite good gas pressure and a functioning igniter.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Direct Spark Ignition (DSI) control board | 460V application | OEM part number LH33WP002 | Replaces legacy part LH33WP002A | Factory-matched logic and timing sequences\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e Genuine Carrier OEM boards use factory-programmed microcontrollers with exact ignition timing, trial-for-ignition duration, and lockout thresholds. Aftermarket boards often have imprecise timing tolerances that can cause nuisance lockouts, premature component wear, or unsafe ignition sequences.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Disconnect all power before servicing. Tools needed: 1\/4\" and 5\/16\" nut drivers, needle-nose pliers, smartphone (photograph all wiring harness connections before removal). Transfer connectors one-by-one to avoid miswiring. Recheck all 24V and line-voltage terminals before restoring power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. 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 Carrier \u003cstrong\u003ePY1REA036074ABWA\u003c\/strong\u003e packaged unit. Also used on select Carrier, Bryant, and Payne models in the 48, 574, 580, 581, 582, 583, 588, 589, and PY series — always verify your unit's data plate and existing part number before ordering. Our fitment team is available to confirm compatibility prior to purchase.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640762323315,"sku":"CARRIE-PY1REA036074ABWA-CONTROL_BOARD-LH33WP002","price":475.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640762356083,"sku":"CARRIE-PY1REA036074ABWA-CONTROL_BOARD-LH33WP002-GEN","price":418.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-LH33WP002_4e61642c-316d-47e9-93c2-60148ac88ddb.jpg?v=1775027693","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py1rea036074abwa-control-board-cyc67o","provider":"National HVAC Parts","version":"1.0","type":"link"}