{"product_id":"carrier-fv4bnf002t00aaaa-transformer-h3hww2","title":"OEM Carrier Transformer 40VA 120V\/24V for FV4BNF002T00AAAA","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V to 24V for Model FV4BNF002T00AAAA\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01CN236\u003c\/strong\u003e) is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier FV4BNF002T00AAAA\u003c\/strong\u003e fan coil air handler. The transformer steps down line voltage from 120V to the 24V signal required by your thermostat, control board, and all low-voltage safety circuits. When this part fails, the entire control circuit loses power — the thermostat goes dark, the system refuses to respond to any calls for heating or cooling, and no error codes are displayed because there is no power to generate them.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input: 120V AC | Output: 24V AC | Rating: 40VA | OEM Part Number: HT01CN236 | Factory-matched construction for Carrier fan coil applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to exact Carrier factory specifications, ensuring stable 24V output under full VA load. Generic transformers frequently underperform at rated VA, causing intermittent lockouts, nuisance tripping of the 3-amp fuse, or premature failure of downstream control boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Note wire colors and terminal labels before disconnecting the old unit. Confirm 24V output with a multimeter before buttoning up the panel.\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 ship the same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eFV4BNF002T00AAAA\u003c\/strong\u003e fan coil air handler. Verify your existing transformer's input\/output voltage and VA rating against your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before you buy — same-day shipping on all in-stock OEM parts.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909493936499,"sku":"CARRIE-FV4BNF002T00AAAA-TRANSFORMER-HT01CN236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909493969267,"sku":"CARRIE-FV4BNF002T00AAAA-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_cd47a0f9-0390-43e6-8cba-45d1a1ae80b9.jpg?v=1782941118","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fv4bnf002t00aaaa-transformer-h3hww2","provider":"National HVAC Parts","version":"1.0","type":"link"}