{"product_id":"carrier-fy5bnf024t10aaaa-transformer-h3hwwy","title":"OEM Carrier Transformer 40VA 120V-24V for FY5BNF024T10AAAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01CN241 for Model FY5BNF024T10AAAA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part number \u003cstrong\u003eHT01CN241\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eFY5BNF024T10AAAA\u003c\/strong\u003e fan coil unit. The transformer steps down line voltage (120V) to the 24V signal required by the control board, thermostat, and all low-voltage control circuits. When this component fails, the entire control circuit goes dark — your thermostat becomes unresponsive, the system won't call for heating or cooling, and nothing operates. A failed transformer is one of the most commonly misdiagnosed HVAC faults, often mistaken for a bad control board or thermostat.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary voltage | 24V secondary output | Factory-matched winding insulation class | Compact form factor sized for OEM bracket mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers like this HT01CN241 use factory-wound cores that maintain voltage regulation under load. Generic units frequently sag under peak demand, causing erratic thermostat behavior and nuisance lockouts over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or quick-connect terminals. Confirm secondary output voltage (24V AC) at the control board connector after installation to verify correct operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. Orders placed before 3 PM EST ship 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\u003eFY5BNF024T10AAAA\u003c\/strong\u003e fan coil unit. Always verify the 40VA rating and 120V\/24V configuration against your unit's wiring diagram and data plate before ordering. Our fitment team is available to confirm compatibility — contact us before you order if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909461758323,"sku":"CARRIE-FY5BNF024T10AAAA-TRANSFORMER-HT01CN241","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909461791091,"sku":"CARRIE-FY5BNF024T10AAAA-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_72884168-dce3-43ad-9fa4-02606414970f.jpg?v=1782939750","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fy5bnf024t10aaaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}