{"product_id":"carrier-c4850c50zg040600-transformer-h302a1","title":"OEM Carrier 40VA 120V to 24V Control Transformer HT01BD236 for C4850C50ZG040600 | National HVAC Parts","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BD236 for Model C4850C50ZG040600\u003c\/h1\u003e\u003cp\u003eThis OEM replacement transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified control circuit transformer for the \u003cstrong\u003eCarrier C4850C50ZG040600\u003c\/strong\u003e packaged unit. The transformer steps down line voltage from 120V to 24V to power the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When the transformer fails, nothing in the control system responds: the thermostat goes blank, the unit refuses to start, and you may measure zero volts on the secondary side. A shorted transformer may also blow the low-voltage fuse repeatedly.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | Primary: 120V | Secondary: 24V | OEM part number HT01BD236 | Factory-matched construction for reliable control circuit protection\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 insulation class, ensuring proper current handling under peak load. Generic transformers with undersized VA ratings can overheat, causing nuisance shutdowns or repeated fuse failures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off all power before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Photograph or label all wiring before disconnecting. Verify 24V output on secondary terminals before reassembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eC4850C50ZG040600\u003c\/strong\u003e packaged unit. Always verify the primary voltage, secondary voltage, and VA rating on your unit's data plate or existing transformer label before ordering. Our fitment team is available to confirm compatibility before you buy — don't hesitate to reach out. Order today and receive same-day shipping on all in-stock OEM parts.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909780525427,"sku":"CARRIE-C4850C50ZG040600-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909780558195,"sku":"CARRIE-C4850C50ZG040600-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_58a14653-14cf-4156-ac49-f7c2d4001db8.jpg?v=1782899376","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50zg040600-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}