{"product_id":"carrier-c4850c48zg050600-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C4850C48ZG050600","description":"\u003ch1\u003eOEM Carrier Transformer 40VA 120V to 24V for Model C4850C48ZG050600\u003c\/h1\u003e\u003cp\u003eThis OEM control circuit transformer (part# \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier C4850C48ZG050600\u003c\/strong\u003e packaged unit. The transformer steps down 120V line voltage to the 24V signal voltage that powers your thermostat, control board, and all low-voltage switching circuits. When this component fails, the entire control circuit goes dark — the thermostat goes blank, the system stops responding to calls for heating or cooling, and no diagnostic codes appear because the board itself has lost power.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA output | Primary: 120V AC | Secondary: 24V AC | OEM part number HT01BD236 | Factory-matched construction for Carrier packaged equipment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound and potted to Carrier's exact VA and voltage specifications, ensuring stable 24V output under full control-circuit load. Undersized generic replacements can sag below 24V, causing erratic contactor chatter, nuisance lockouts, and premature board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Verify 0V at primary leads before handling. Photograph all low-voltage wire connections before removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. In-stock units ship same business day from our warehouse when ordered before 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eC4850C48ZG050600\u003c\/strong\u003e packaged unit. Cross-reference OEM part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e against your unit's wiring diagram or data plate before ordering to confirm 40VA 120V\/24V specification. Our HVAC parts specialists are available to verify fitment — contact us before you order if you have any questions. \u003cem\u003eOrder today and get same-day shipping on this in-stock OEM part.\u003c\/em\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909864935795,"sku":"CARRIE-C4850C48ZG050600-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909864968563,"sku":"CARRIE-C4850C48ZG050600-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_ce696887-db7d-4c99-b087-a0cd07f50891.jpg?v=1782940097","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c48zg050600-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}