{"product_id":"carrier-fv4cnf003t00abaa-transformer-h3hww2","title":"OEM Carrier Transformer 40VA 120V\/24V for FV4CNF003T00ABAA","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V\/24V for Model FV4CNF003T00ABAA\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 FV4CNF003T00ABAA\u003c\/strong\u003e fan coil air handler. The transformer steps down line voltage from 120V AC to the 24V AC signal that powers your thermostat, control board, and all low-voltage control components. When this transformer fails, the entire control circuit goes dead — your thermostat will display nothing or fail to communicate, and the system will not respond to any heating or cooling calls. A failed transformer is often indicated by a blown 3-amp fuse on the control board, frequently caused by a short in the low-voltage wiring.\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 for stable low-voltage control circuit operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This factory OEM transformer is wound to exact VA and voltage tolerances required by Carrier. Undersized or off-tolerance generic transformers can cause nuisance tripped fuses, erratic thermostat behavior, and premature control board failure.\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 spade connectors. Always verify input\/output voltage with a multimeter after installation before restoring power. Photograph all wiring connections prior to removal.\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 as a direct OEM replacement for the Carrier \u003cstrong\u003eFV4CNF003T00ABAA\u003c\/strong\u003e fan coil air handler. Verify your existing transformer's VA rating and voltage specifications on the unit's data plate or wiring diagram before ordering. Our parts specialists are available to confirm fitment — order with confidence and get your system back online today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909491773811,"sku":"CARRIE-FV4CNF003T00ABAA-TRANSFORMER-HT01CN236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909491806579,"sku":"CARRIE-FV4CNF003T00ABAA-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_c2cebe92-571e-4e20-bf5a-56607532b203.jpg?v=1782941141","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fv4cnf003t00abaa-transformer-h3hww2","provider":"National HVAC Parts","version":"1.0","type":"link"}