{"product_id":"carrier-fv4cnf005t00abaa-transformer-h3hww2","title":"OEM Carrier Transformer 40VA 24V for FV4CNF005T00ABAA — HT01CN236","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model FV4CNF005T00ABAA — Part HT01CN236\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 FV4CNF005T00ABAA\u003c\/strong\u003e fan coil unit. The transformer steps down 120V line voltage to the 24V signal voltage required to power your thermostat, control board, and all low-voltage control wiring. When this component fails, the entire control circuit goes dead — the thermostat loses power, relays won't energize, and the system becomes completely unresponsive. A failed transformer is often diagnosed by confirming 120V input at the primary but 0V output at the secondary terminals.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input 120V AC | Output 24V AC | 40VA rating | OEM part number HT01CN236 | Factory-matched construction for the FV4CNF005T00ABAA fan coil\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances specified by Carrier engineering. Undersized or off-tolerance generic units can cause nuisance tripping, control board damage, or premature failure — protecting your expensive control board starts with the right transformer.\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, multimeter, wire nuts or spade connectors. Label all wiring connections before removal. Typical swap takes 20–30 minutes for an experienced technician.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e This transformer is engineered specifically for the \u003cstrong\u003eCarrier FV4CNF005T00ABAA\u003c\/strong\u003e fan coil unit. Always verify your existing transformer's input voltage, output voltage, and VA rating against your unit's data plate before ordering. Our parts specialists are available to confirm fitment — order with confidence and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909490987379,"sku":"CARRIE-FV4CNF005T00ABAA-TRANSFORMER-HT01CN236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909491020147,"sku":"CARRIE-FV4CNF005T00ABAA-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_71ee265f-5d39-4e78-b36b-8138fb3dd255.jpg?v=1782942554","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fv4cnf005t00abaa-transformer-h3hww2","provider":"National HVAC Parts","version":"1.0","type":"link"}