{"product_id":"carrier-fy5bnf024000aaaa-transformer-h3hwwy","title":"OEM Carrier Transformer 40VA 120V-24V for FY5BNF024000AAAA","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V to 24V for Model FY5BNF024000AAAA\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01CN241\u003c\/strong\u003e) is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier FY5BNF024000AAAA\u003c\/strong\u003e fan coil unit. The transformer steps down 120V line voltage to the 24V AC signal required to power the thermostat, control board, and all low-voltage safety and switching circuits throughout the system. When this component fails, the entire control circuit goes dead — the thermostat goes blank, the system produces no response whatsoever, and no heating or cooling operation is possible. It is often the first component to inspect when a unit shows zero activity despite confirmed line power at the disconnect.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01CN241 | Factory-matched construction for Carrier FY5BNF024000AAAA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer meets Carrier's exact VA rating and insulation class specifications. Generic alternatives frequently run undersized VA ratings, causing overheating, nuisance tripping, and premature failure — especially when multiple zone valves or accessories share the control circuit load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always disconnect power at the breaker and verify with a non-contact voltage tester before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Photograph all wiring connections before removal and match wire-for-wire on reinstall.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. In-stock units ship the same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the Carrier \u003cstrong\u003eFY5BNF024000AAAA\u003c\/strong\u003e fan coil unit. Verify your unit's data plate shows a 120V primary \/ 24V secondary, 40VA control transformer requirement before ordering. Our parts specialists are available to confirm fitment — contact us before you buy if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909462348147,"sku":"CARRIE-FY5BNF024000AAAA-TRANSFORMER-HT01CN241","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909462380915,"sku":"CARRIE-FY5BNF024000AAAA-TRANSFORMER-HT01CN241-GEN","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-HT01CN241_50051308-7910-4bce-9cc7-02de969797dd.jpg?v=1782939742","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fy5bnf024000aaaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}