{"product_id":"carrier-fy5bnf024t00aaaa-transformer-h3hwwy","title":"OEM Carrier Transformer 40VA 120V-24V for FY5BNF024T00AAAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01CN241 for Model FY5BNF024T00AAAA\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01CN241\u003c\/strong\u003e) is the factory-specified control transformer for the \u003cstrong\u003eCarrier FY5BNF024T00AAAA\u003c\/strong\u003e fan coil unit. The transformer steps down line voltage (120V) to the 24V signal voltage that powers your thermostat, control board, and all low-voltage switching circuits. When this component fails, the entire control circuit goes dark — the thermostat becomes unresponsive, relays won't energize, and the system will not heat or cool. A failed transformer is often indicated by a tripped secondary fuse or a completely unresponsive system despite good line power at the unit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input 120V AC | Output 24V AC | 40VA rated | OEM part number HT01CN241 | Factory-matched electrical tolerances for Carrier fan coil applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine Carrier OEM transformer, wound and rated to exact factory specifications. Generic transformers may carry undersized VA ratings or lower-grade core laminations, leading to overheating, premature burnout, and potential damage to connected control boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter, wire nuts. Always verify 0V at the primary terminals before touching any wiring. Label all low-voltage connections prior to removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. In-stock units ship same business day from our warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered for the Carrier \u003cstrong\u003eFY5BNF024T00AAAA\u003c\/strong\u003e fan coil unit. Confirm your existing transformer's input\/output voltage and VA rating against your unit's data plate before ordering. Our parts specialists are available to verify fitment — reach out before you order if you have any questions. Orders placed before 3 PM ship the same business day.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909461823859,"sku":"CARRIE-FY5BNF024T00AAAA-TRANSFORMER-HT01CN241","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909461856627,"sku":"CARRIE-FY5BNF024T00AAAA-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_ebd2a0d1-e0d0-4dab-a41d-4ad3c0c86906.jpg?v=1782939748","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fy5bnf024t00aaaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}