{"product_id":"carrier-fx4anf030000acaa-transformer-h3hww2","title":"OEM Carrier Transformer 40VA 120V\/24V for FX4ANF030000ACAA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA for Model FX4ANF030000ACAA Air Handler\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part# \u003cstrong\u003eHT01CN236\u003c\/strong\u003e) is the factory-specified step-down control transformer for the \u003cstrong\u003eFX4ANF030000ACAA\u003c\/strong\u003e fan coil air handler. It converts 120V line voltage to the 24V AC signal that powers your thermostat, control board, contactor coil, and all low-voltage control circuitry. When this transformer fails, the entire control circuit goes dead — the thermostat loses power, the system refuses to respond to any call for heating or cooling, and nothing operates. A failed transformer is often misdiagnosed as a control board issue, so always verify 24V output at the secondary terminals before replacing more expensive components.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01CN236 | Factory-matched for \u003cstrong\u003eFX4ANF030000ACAA\u003c\/strong\u003e air handler control circuit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit is wound to exact VA and voltage tolerances required by the Carrier FX4ANF030000ACAA control board. Undersized or off-spec generic transformers can overheat, blow internal fuses, or deliver inconsistent 24V output that causes nuisance lockouts and relay chatter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Turn off all power (line and low-voltage) before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or terminal connectors. Test for 24V output at secondary terminals after installation before closing the unit. Photograph all wiring connections before removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Ships same business day from our stocked warehouse — no backorder delays.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as a direct OEM replacement for the Carrier \u003cstrong\u003eFX4ANF030000ACAA\u003c\/strong\u003e fan coil air handler. Confirm your unit's data plate lists a 40VA, 120V\/24V control transformer before ordering. Our HVAC parts specialists are available to verify fitment — reach out before you order if you have any questions. \u003cstrong\u003eOrder today and your part ships the same business day.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909490037107,"sku":"CARRIE-FX4ANF030000ACAA-TRANSFORMER-HT01CN236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909490069875,"sku":"CARRIE-FX4ANF030000ACAA-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_635d0ce4-5e60-4343-823b-a071a8e84722.jpg?v=1782941158","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fx4anf030000acaa-transformer-h3hww2","provider":"National HVAC Parts","version":"1.0","type":"link"}