{"product_id":"carrier-tchc2550hecmray600-control-board-cyc67o","title":"OEM Carrier DSI Control Board LH33WP002 — TCHC2550HECMRAY600","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model TCHC2550HECMRAY600\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Direct Spark Ignition (DSI) Control Board for the \u003cstrong\u003eCarrier TCHC2550HECMRAY600\u003c\/strong\u003e. The DSI control board is the brain of the heating sequence — it manages the ignition spark, monitors flame presence, sequences the gas valve, and governs safety lockout logic. When this board fails, common symptoms include a unit that attempts ignition but immediately locks out, intermittent or no-heat calls, continuous ignition sparking with no flame establishment, or fault codes indicating ignition failure on the system's diagnostic LED.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Direct Spark Ignition (DSI) control architecture | OEM part number LH33WP002 | Factory-programmed timing and lockout sequences | Plug-and-play wiring harness connections matched to \u003cstrong\u003eTCHC2550HECMRAY600\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM board with factory-calibrated ignition timing, safety lockout thresholds, and flame-sensing sensitivity. Aftermarket boards may use generic timing curves that cause nuisance lockouts, void equipment warranties, or fail to meet local code requirements.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Requires shutting off gas and 120V power before servicing. Photograph all wiring connections and label harnesses before removal. Tools needed: #2 Phillips screwdriver, 1\/4\" nut driver, needle-nose pliers. Recommend clearing fault history and running a full heat cycle after installation to confirm operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty on parts. Orders placed before 3 PM ET ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as the direct factory replacement for \u003cstrong\u003eCarrier model TCHC2550HECMRAY600\u003c\/strong\u003e. Always cross-reference the part number printed on your existing board before ordering to confirm fitment — board revisions may exist across production runs. Our HVAC parts specialists are available to verify compatibility before you purchase. \u003cstrong\u003eOrder today and get same-day shipping!\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640274309491,"sku":"CARRIE-TCHC2550HECMRAY600-CONTROL_BOARD-LH33WP002","price":200.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640274342259,"sku":"CARRIE-TCHC2550HECMRAY600-CONTROL_BOARD-LH33WP002-GEN","price":176.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-LH33WP002_525a68e4-0cc6-477a-a297-b0f198ae6a90.jpg?v=1775027858","url":"https:\/\/nationalhvacparts.com\/products\/carrier-tchc2550hecmray600-control-board-cyc67o","provider":"National HVAC Parts","version":"1.0","type":"link"}