{"product_id":"carrier-fy5bnf030010aaaa-transformer-h3hwwy","title":"OEM Carrier Transformer 40VA 120V-24V for FY5BNF030010AAAA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA for Model FY5BNF030010AAAA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part# HT01CN241) is the factory-specified replacement for the \u003cstrong\u003eCarrier FY5BNF030010AAAA\u003c\/strong\u003e fan coil unit. The transformer steps down line voltage from 120V to 24V to power the low-voltage control circuit — including the thermostat, contactor coil, and control board. When the transformer fails, the entire control system loses power: the thermostat goes dark, the system won't respond to any calls for heating or cooling, and you may notice a burning smell or a tripped secondary-side fuse.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | OEM part number HT01CN241 | Factory-matched impedance and winding tolerance for reliable low-voltage output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine Carrier OEM transformer, engineered to exact VA and voltage specifications for the FY5BNF030010AAAA. Generic transformers often underrate their VA capacity, causing overheating and premature failure under normal HVAC control loads.\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 terminal connectors. Always verify 0V at primary terminals before handling. Label wiring connections before removing the old unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eFY5BNF030010AAAA\u003c\/strong\u003e fan coil unit. Verify your existing transformer's primary voltage (120V) and VA rating (40VA) against your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you buy — contact us before placing your order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909461201267,"sku":"CARRIE-FY5BNF030010AAAA-TRANSFORMER-HT01CN241","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909461234035,"sku":"CARRIE-FY5BNF030010AAAA-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_86c84be3-cb9e-4cb1-b792-43e8e80682ee.jpg?v=1782939755","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fy5bnf030010aaaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}