{"product_id":"carrier-fv4anf005000adaa-transformer-h3hww2","title":"OEM Carrier Transformer 40VA 120V\/24V for FV4ANF005000ADAA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model FV4ANF005000ADAA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part number \u003cstrong\u003eHT01CN236\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eFV4ANF005000ADAA\u003c\/strong\u003e fan coil air handler. The transformer steps line voltage (120V) down to the 24V signal voltage required by the control board, thermostat, and all low-voltage control circuits. When this part fails, the entire control circuit loses power — your thermostat goes blank, the system won't respond to any commands, and nothing turns on. It is often the first component to suspect when the unit appears completely dead with no error codes.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | OEM part number HT01CN236 | Factory-matched output tolerance for reliable low-voltage control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM transformer is wound and rated to exact factory specifications, ensuring proper VA capacity to power the control board, thermostat, and zone controls simultaneously. Undersized generic transformers can overheat and fail prematurely under full control circuit load.\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, needle-nose pliers, wire stripper, multimeter. Label or photograph all wiring connections before disconnecting. Mount securely and verify 24V output with a multimeter before restoring power.\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 for the Carrier \u003cstrong\u003eFV4ANF005000ADAA\u003c\/strong\u003e fan coil air handler. Always verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate before ordering. Our fitment team is available to confirm compatibility before you purchase — ships same business day.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909495640435,"sku":"CARRIE-FV4ANF005000ADAA-TRANSFORMER-HT01CN236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909495673203,"sku":"CARRIE-FV4ANF005000ADAA-TRANSFORMER-HT01CN236-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-HT01CN236_8b2124c2-03b4-4f0d-b726-5287953eedf4.jpg?v=1782941110","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fv4anf005000adaa-transformer-h3hww2","provider":"National HVAC Parts","version":"1.0","type":"link"}