{"product_id":"carrier-fy4anf048000aaaa-transformer-h3hwwy","title":"OEM Carrier Transformer 40VA 120V\/24V for FY4ANF048000AAAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Circuit Transformer HT01CN241 for Model FY4ANF048000AAAA\u003c\/h1\u003e\u003cp\u003eThis is the factory-specified OEM replacement transformer (part number \u003cstrong\u003eHT01CN241\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier FY4ANF048000AAAA\u003c\/strong\u003e fan coil unit. The transformer steps down 120V line voltage to 24V AC, powering the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When this transformer fails, nothing in the system responds: the thermostat goes blank, the unit won't call for cooling or heating, and no fault codes are generated because the control board itself loses power.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | Primary: 120V AC | Secondary: 24V AC | Class 2 transformer | Replaces OEM part number HT01CN241\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to Carrier's exact VA and voltage tolerance specifications. Generic transformers often run underrated VA, causing premature burnout under normal control circuit loads — especially in systems with multiple accessories drawing 24V power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker before beginning any work. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to confirm 0V before touching wiring). Photograph all wiring connections before disconnecting. Match wire colors carefully on both primary and secondary terminals.\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 specifically for the Carrier \u003cstrong\u003eFY4ANF048000AAAA\u003c\/strong\u003e fan coil unit (4-ton, 208\/230V). Always verify your existing transformer's VA rating and primary\/secondary voltages against your unit's data plate before ordering. Our fitment specialists are available to confirm compatibility before you buy — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909465985395,"sku":"CARRIE-FY4ANF048000AAAA-TRANSFORMER-HT01CN241","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909466018163,"sku":"CARRIE-FY4ANF048000AAAA-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_6e098d6c-4419-46c2-a82e-e6ea6920277e.jpg?v=1782941269","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fy4anf048000aaaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}