{"product_id":"carrier-fy4anf030t00aaaa-transformer-h3hwwy","title":"OEM Carrier Transformer 40VA 24V for FY4ANF030T00AAAA — HT01CN241","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01CN241 for Model FY4ANF030T00AAAA\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01CN241\u003c\/strong\u003e) is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier FY4ANF030T00AAAA\u003c\/strong\u003e fan coil unit. The transformer steps down line voltage (120V) to the 24V AC signal that powers the thermostat, control board, and all low-voltage switching components throughout the system. When this transformer fails, the result is a completely unresponsive system — the thermostat goes dark, relays won't energize, and no heating or cooling function is possible. It is one of the most commonly overlooked components when diagnosing a system that appears completely dead.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input 120V AC | Output 24V AC | 40VA rated | OEM part number HT01CN241 | Factory-matched output tolerance for stable low-voltage control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit is wound and tested to Carrier's exact 40VA specification. Generic transformers frequently run under-rated VA capacity, causing premature burnout when multiple low-voltage accessories (humidistats, zone boards, UV lights) share the circuit load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Confirm primary and secondary voltage readings after install before closing the panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for Carrier model \u003cstrong\u003eFY4ANF030T00AAAA\u003c\/strong\u003e fan coil units. Verify your existing transformer's input voltage, output voltage, and VA rating on the unit data plate or existing component label before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you buy — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909467361651,"sku":"CARRIE-FY4ANF030T00AAAA-TRANSFORMER-HT01CN241","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909467394419,"sku":"CARRIE-FY4ANF030T00AAAA-TRANSFORMER-HT01CN241-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-HT01CN241_20218603-1094-47e5-b840-f20c95f4bd0b.jpg?v=1782942581","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fy4anf030t00aaaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}