{"product_id":"carrier-c4850c50zn055600-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V to 24V for C4850C50ZN055600 — Ships Today","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V\/24V for Model C4850C50ZN055600\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM step-down transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) designed for the \u003cstrong\u003eCarrier C4850C50ZN055600\u003c\/strong\u003e packaged unit. The transformer converts 120V line voltage to the 24V AC signal that powers your thermostat, control board, and all low-voltage control circuits. When this part fails, the entire control system goes dark — your thermostat will display nothing, the system will not respond to calls for heating or cooling, and no fault codes will be generated because the board itself has lost power.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V AC | Secondary: 24V AC | Compatible with standard Class 2 wiring | Compact footprint for drop-in replacement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM HT01BD236 is wound and insulated to Carrier's exact factory specification, ensuring proper VA output under load. Off-brand transformers are often under-rated and can sag under full control circuit load, causing intermittent lockouts and nuisance faults.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter (to verify 24V output after installation). Photograph or label all wiring connections before removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders received by 3 PM ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the \u003cstrong\u003eCarrier C4850C50ZN055600\u003c\/strong\u003e packaged unit. Always verify your existing transformer's primary\/secondary voltage and VA rating against your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before you buy — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909772300659,"sku":"CARRIE-C4850C50ZN055600-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909772333427,"sku":"CARRIE-C4850C50ZN055600-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_137c694e-8a51-4bdc-8978-1521ab1a98fd.jpg?v=1782939079","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50zn055600-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}