{"product_id":"carrier-py3pna030040na-control-board-cyc67p","title":"OEM Carrier DSI Control Board LH33WP003 for PY3PNA030040NA","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP003 for Model PY3PNA030040NA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Direct Spark Ignition (DSI) control board for the \u003cstrong\u003eCarrier PY3PNA030040NA\u003c\/strong\u003e packaged unit. As the central brain of the heating system, this board manages the entire ignition sequence — energizing the inducer motor, proving the pressure switch, firing the spark igniter, and monitoring the flame sensor for a safe and confirmed burner light-off. When this board fails, common symptoms include a hard lockout with no heat, failure to advance through the ignition sequence, intermittent heating loss, or fault codes indicating ignition or flame-proving errors.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Direct Spark Ignition (DSI) control | 24 VAC control voltage | 208\/230 VAC 60Hz system voltage | Replaces LH33WP003 and LH33WP003A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This genuine Carrier OEM board is pre-programmed to factory ignition timing, lockout thresholds, and safety-shutdown logic. Aftermarket boards may use generalized timing that causes nuisance lockouts or fails to meet unit-specific safety requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Disconnect power and gas before servicing. Tools needed: ¼\" nut driver, needle-nose pliers, phone\/camera to photograph wiring harness before removal. Transfer all connector plugs one at a time to avoid miswiring. Verify correct lockout reset procedure after installation.\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 as the factory-specified replacement for \u003cstrong\u003eCarrier model PY3PNA030040NA\u003c\/strong\u003e. Also cross-references to part number LH33WP003A. Always confirm your unit's control voltage and board part number on the equipment data label before ordering. Need fitment verification? Our HVAC parts specialists confirm compatibility before you buy — contact us today and get your unit back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640396697971,"sku":"CARRIE-PY3PNA030040NA-CONTROL_BOARD-LH33WP003","price":562.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640396730739,"sku":"CARRIE-PY3PNA030040NA-CONTROL_BOARD-LH33WP003-GEN","price":494.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-LH33WP003_085a78ba-9790-48e3-860d-f3fb0f523f7f.jpg?v=1775028117","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3pna030040na-control-board-cyc67p","provider":"National HVAC Parts","version":"1.0","type":"link"}