{"product_id":"carrier-fx4anf018000aaaa-transformer-h3hww2","title":"OEM Carrier Transformer 40VA 120V-24V for FX4ANF018000AAAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01CN236 for Model FX4ANF018000AAAA\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01CN236\u003c\/strong\u003e) is the factory-specified control transformer for the \u003cstrong\u003eCarrier FX4ANF018000AAAA\u003c\/strong\u003e fan coil unit. The transformer steps down line voltage (120V) to the 24V AC signal that powers the control board, thermostat circuit, and all low-voltage components in your system. When the transformer fails, the entire control circuit goes dead — the thermostat goes blank, the system refuses to respond to any call for heating or cooling, and no low-voltage components will operate. A failed transformer is often the first suspect when absolutely nothing in the system responds.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V | Secondary: 24V AC | OEM part number HT01CN236 | Factory-matched output for Carrier low-voltage control circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to Carrier's exact VA rating and voltage tolerances. Undersized or off-spec generic transformers can overheat, trip internal thermal protection, and damage sensitive control boards — making OEM the only safe choice for this application.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit at the breaker before starting. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Label all low-voltage wires before disconnecting. Verify 24V output with a multimeter before closing the cabinet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as the direct OEM replacement for the Carrier \u003cstrong\u003eFX4ANF018000AAAA\u003c\/strong\u003e fan coil unit. Always verify your existing transformer's primary voltage, secondary voltage, and VA rating against your unit's data plate before ordering. Not sure if this is the right part? Our HVAC parts specialists confirm fitment before you buy — reach out before placing your order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909490561395,"sku":"CARRIE-FX4ANF018000AAAA-TRANSFORMER-HT01CN236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909490594163,"sku":"CARRIE-FX4ANF018000AAAA-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_c80e1e85-e031-468f-b978-5e240c0da7f9.jpg?v=1782939635","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fx4anf018000aaaa-transformer-h3hww2","provider":"National HVAC Parts","version":"1.0","type":"link"}