{"product_id":"carrier-fe4anf003000aaaa-transformer-h3hww2","title":"OEM Carrier Transformer 40VA 120V-24V for FE4ANF003000AAAA","description":"\u003ch1\u003eOEM Carrier 40VA Transformer HT01CN236 for Model FE4ANF003000AAAA\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 FE4ANF003000AAAA\u003c\/strong\u003e fan coil air handler. The transformer steps down 120V line voltage to the 24V signal required by your thermostat, control board, and all low-voltage safety controls. When this component fails, the entire control circuit goes dark — your thermostat loses power, the system won't respond to any command, and no heating or cooling stages will activate. If your system is completely unresponsive and you've ruled out a tripped breaker or blown fuse, a failed transformer is the most likely culprit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | Direct OEM replacement for part number HT01CN236 | Factory-matched output tolerance for stable low-voltage control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine Carrier OEM transformer — wound and tested to factory specifications. Generic transformers may produce slightly off-target secondary voltages that cause erratic thermostat behavior, nuisance trips, or premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Turn off power at the breaker before starting. Tools needed: flathead and Phillips screwdrivers, wire nuts or spade connectors, multimeter to verify output voltage after install. Label or photograph all wiring connections before disconnecting the old unit.\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 climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the Carrier \u003cstrong\u003eFE4ANF003000AAAA\u003c\/strong\u003e fan coil air handler. Always verify your existing transformer's VA rating and primary\/secondary voltages against your unit's data plate before ordering. Our HVAC parts specialists are available to confirm fitment — reach out before you order if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909519462771,"sku":"CARRIE-FE4ANF003000AAAA-TRANSFORMER-HT01CN236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909519495539,"sku":"CARRIE-FE4ANF003000AAAA-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_d5dfea07-8bdb-4c8b-bdaa-8c8e1e4e2053.jpg?v=1782939585","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fe4anf003000aaaa-transformer-h3hww2","provider":"National HVAC Parts","version":"1.0","type":"link"}