{"product_id":"carrier-fa4anf060000afaa-transformer-h3hww2","title":"OEM Carrier Transformer 40VA 120V-24V for FA4ANF060000AFAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01CN236 for Model FA4ANF060000AFAA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part# \u003cstrong\u003eHT01CN236\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier FA4ANF060000AFAA\u003c\/strong\u003e fan coil air handler. The transformer steps down 120V line voltage to 24V AC to power the low-voltage control circuit — including the thermostat, contactor coil, and control board. When it fails, the entire control circuit goes dead: the thermostat goes blank, the system stops responding to calls for cooling or heating, and no components energize. A failed transformer is often misdiagnosed as a bad thermostat or control board, so always verify 24V output at the secondary terminals before replacing other components.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | Direct OEM replacement | Part number HT01CN236 | Matches factory terminal configuration for FA4ANF060000AFAA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances specified by Carrier engineering. Undersized or off-spec generic transformers can sag under load, cause erratic control behavior, or trip on thermal overload — especially in multi-stage systems drawing continuous 24V demand.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker and verify zero voltage with a multimeter before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Label all low-voltage wiring before disconnecting terminals. Confirm primary and secondary wiring polarity during reinstall.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. Ships same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eFA4ANF060000AFAA\u003c\/strong\u003e fan coil air handler. Always verify your unit's data plate voltage requirements and existing VA rating before ordering to ensure a direct match. Our HVAC parts specialists are available to confirm fitment — order with confidence and get back to comfort fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909555966323,"sku":"CARRIE-FA4ANF060000AFAA-TRANSFORMER-HT01CN236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909555999091,"sku":"CARRIE-FA4ANF060000AFAA-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_3ae5f69a-a76a-4521-bbe6-503de65fe927.jpg?v=1782939462","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fa4anf060000afaa-transformer-h3hww2","provider":"National HVAC Parts","version":"1.0","type":"link"}