{"product_id":"carrier-tchc2550hecmray101-control-board-cyc67o","title":"OEM Carrier DSI Control Board LH33WP002 for TCHC2550HECMRAY101","description":"\u003ch1\u003eOEM Carrier Direct Spark Ignition (DSI) Control Board LH33WP002 for Model TCHC2550HECMRAY101\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 TCHC2550HECMRAY101\u003c\/strong\u003e packaged heating and cooling unit. The DSI control board is the central command module of the heating system — it sequences the ignition process, monitors flame presence, controls gas valve operation, and manages safety lockouts. When this board fails, common symptoms include a hard lockout with no ignition attempt, intermittent heating failures, a system that sparks but will not sustain flame, or error codes indicating a controls fault. Replacing it with the correct OEM board restores the precise factory timing sequences that aftermarket boards often cannot replicate.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Direct Spark Ignition (DSI) type | 460V application | Replaces superseded part LH33WP002A | Factory-calibrated ignition timing and safety lockout logic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM boards carry factory-programmed ignition timing, flame-sensing sensitivity, and lockout parameters. Generic or remanufactured alternatives often have imprecise trial-for-ignition windows, which can lead to nuisance lockouts, shortened gas valve life, or unsafe operation — making OEM the only recommended choice for commercial equipment like the TCHC2550HECMRAY101.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 3\/5\u003c\/strong\u003e — Shut off gas supply and disconnect power before beginning. Tools needed: flat-head and Phillips screwdrivers, 1\/4\" and 5\/16\" nut drivers, needle-nose pliers, smartphone or camera to photograph all wiring harness connections prior to removal. Transfer all connectors carefully; incorrect wiring can damage the new board. Recommend verifying correct operation with a qualified technician 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 Designed as the factory-direct replacement for \u003cstrong\u003eCarrier model TCHC2550HECMRAY101\u003c\/strong\u003e. Also fits select Carrier, Bryant, and Payne models in the 48, 574, 580, 581, 582, 583, 588, and 589 series — verify your unit's data plate and existing board part number before ordering. Our fitment team is available to confirm compatibility before you purchase.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640276144499,"sku":"CARRIE-TCHC2550HECMRAY101-CONTROL_BOARD-LH33WP002","price":500.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640276177267,"sku":"CARRIE-TCHC2550HECMRAY101-CONTROL_BOARD-LH33WP002-GEN","price":440.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-LH33WP002_0a60d54e-7f4a-432c-bcff-209907a67c85.jpg?v=1775027842","url":"https:\/\/nationalhvacparts.com\/products\/carrier-tchc2550hecmray101-control-board-cyc67o","provider":"National HVAC Parts","version":"1.0","type":"link"}