{"product_id":"carrier-fa4anf024000afaa-transformer-h3hww2","title":"OEM Carrier Transformer 40VA 120V\/24V for FA4ANF024000AFAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer for Model FA4ANF024000AFAA Air Handler\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part# \u003cstrong\u003eHT01CN236\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier FA4ANF024000AFAA\u003c\/strong\u003e fan coil air handler. The transformer steps down line voltage from 120V to 24V AC to power the low-voltage control circuit — including the thermostat, contactor coil, and control board. When this transformer fails, the entire control circuit loses power: the thermostat goes blank, the system won't respond to any calls for cooling or heating, and nothing runs. A failed transformer is often misdiagnosed as a thermostat or control board issue, so always verify 24V output at the secondary terminals before replacing other components.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | Direct OEM replacement for part number HT01CN236 | Screw-terminal or quick-connect wiring (verify against your unit)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound and rated to Carrier's exact factory specifications. Generic transformers frequently carry undersized VA ratings that cause overheating, nuisance tripping, and premature failure — especially when multiple 24V accessories are wired to the circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the air handler at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade terminals. Photograph existing wiring connections before removing the old transformer. Verify 24V output with a multimeter after installation before restoring full system power.\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 cutoff ship the same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eFA4ANF024000AFAA\u003c\/strong\u003e fan coil air handler. Confirm your unit's control transformer VA and voltage ratings on the data plate inside the cabinet door before ordering. Our parts specialists are available to verify fitment — contact us before you order if you have any questions. \u003cstrong\u003eIn stock and ships today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909561241971,"sku":"CARRIE-FA4ANF024000AFAA-TRANSFORMER-HT01CN236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909561274739,"sku":"CARRIE-FA4ANF024000AFAA-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_08be5ebb-9895-48c5-b3e5-cabb1d12455c.jpg?v=1782940838","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fa4anf024000afaa-transformer-h3hww2","provider":"National HVAC Parts","version":"1.0","type":"link"}