{"product_id":"carrier-fa4anc024010agaa-transformer-h3hww2","title":"OEM Carrier Transformer 40VA 120V\/24V for FA4ANC024010AGAA","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V\/24V for Model FA4ANC024010AGAA\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 FA4ANC024010AGAA\u003c\/strong\u003e fan coil air handler. Its job is to step down line voltage from 120V to the 24V signal voltage required by your thermostat, control board, contactor coil, and all low-voltage safety circuits. When this transformer fails, absolutely nothing in the control circuit responds — the thermostat goes blank, the system will not call for heating or cooling, and the unit sits completely dead despite having full line power. A failed transformer is also one of the most commonly misdiagnosed faults; always verify 24V output at the secondary terminals with a multimeter before condemning the control board.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V | Secondary: 24V | Class 2 control circuit transformer | OEM part number HT01CN236 | Factory-matched output tolerance for reliable low-voltage signal integrity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the exact factory OEM unit. Generic transformers frequently run under-rated VA loads, causing voltage sag that triggers nuisance lockouts, erratic thermostat behavior, and premature contactor coil failure. OEM ensures the VA capacity your system was engineered to run.\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 terminal connectors. Photograph all wiring before removal. Confirm 24V output on secondary after installation before closing the cabinet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered for the Carrier \u003cstrong\u003eFA4ANC024010AGAA\u003c\/strong\u003e fan coil air handler. Verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before you buy — same-day shipping on all in-stock orders.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909568057715,"sku":"CARRIE-FA4ANC024010AGAA-TRANSFORMER-HT01CN236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909568090483,"sku":"CARRIE-FA4ANC024010AGAA-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_62e06e2b-0566-46da-97b5-f9f4276daeb9.jpg?v=1782940809","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fa4anc024010agaa-transformer-h3hww2","provider":"National HVAC Parts","version":"1.0","type":"link"}