{"product_id":"carrier-c4850c48zn070200-transformer-h302a1","title":"OEM Carrier 40VA 120V to 24V Transformer for C4850C48ZN070200 — Ships Today","description":"\u003ch1\u003eOEM Carrier Control Circuit Transformer 40VA for Model C4850C48ZN070200\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified step-down transformer for the \u003cstrong\u003eCarrier C4850C48ZN070200\u003c\/strong\u003e packaged unit. It converts 120V line voltage to the 24V signal required to power the control board, thermostat circuit, and all low-voltage components. When this transformer fails, the entire control circuit goes dead — the thermostat shows no response, the unit won't call for heating or cooling, and nothing happens when you adjust the setpoint. It is often the first component to check when a system appears completely unresponsive.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | Class 2 transformer | Factory-matched OEM part number HT01BD236\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM HT01BD236 transformer is wound to exact Carrier factory specifications, ensuring proper VA capacity and voltage regulation. Undersized or off-tolerance generic transformers can overheat, blow fuses repeatedly, or damage sensitive control boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter for voltage verification. Label or photograph all low-voltage wiring connections before removal. Standard wire-to-terminal swap with no refrigerant involvement.\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.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed and factory-matched for the Carrier \u003cstrong\u003eC4850C48ZN070200\u003c\/strong\u003e packaged unit. Verify your existing transformer's VA rating and primary\/secondary voltage from the data plate before ordering. If you are unsure of fitment, our HVAC parts specialists can confirm compatibility before you purchase — same-day shipping available on all in-stock orders.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909852057971,"sku":"CARRIE-C4850C48ZN070200-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909852090739,"sku":"CARRIE-C4850C48ZN070200-TRANSFORMER-HT01BD236-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-HT01BD236_5c53546d-1627-4853-9af3-a8c666db4887.jpg?v=1782899399","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c48zn070200-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}