{"product_id":"carrier-fy5bnf036t10aaaa-transformer-h3hwwy","title":"OEM Carrier Transformer 40VA 120V-24V for FY5BNF036T10AAAA","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V–24V for Model FY5BNF036T10AAAA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part number \u003cstrong\u003eHT01CN241\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eFY5BNF036T10AAAA\u003c\/strong\u003e fan coil unit. The transformer steps down 120V line voltage to the 24V signal voltage required by the control board, thermostat, and all low-voltage components in the system. When the transformer fails, the entire control circuit goes dead — the thermostat goes blank, the system refuses to respond to any call for heating or cooling, and no low-voltage components receive power. It is one of the first components to check when nothing in the system responds.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V | Secondary: 24V | OEM part number HT01CN241 | Factory-matched impedance and VA capacity for the FY5BNF036T10AAAA control circuit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This factory OEM transformer is wound to the exact VA rating and insulation class specified by Carrier. Undersized or off-tolerance aftermarket transformers can overheat, trip internal fuses, or deliver insufficient current to the control board — causing nuisance lockouts and premature component failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label or photograph all wiring connections before disconnecting. Confirm incoming voltage is 120V at the primary leads before energizing.\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 Direct OEM replacement for Carrier model \u003cstrong\u003eFY5BNF036T10AAAA\u003c\/strong\u003e fan coil units. Verify your existing transformer's primary voltage (120V) and VA rating (40VA) on the unit data plate or existing component label before ordering. Our parts specialists are available to confirm fitment — contact us before you order if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909459136883,"sku":"CARRIE-FY5BNF036T10AAAA-TRANSFORMER-HT01CN241","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909459169651,"sku":"CARRIE-FY5BNF036T10AAAA-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_6ad1e8b4-4d7b-4c82-9baf-7d89664af7a1.jpg?v=1782939765","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fy5bnf036t10aaaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}