{"product_id":"carrier-c4850c50zx090610-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V to 24V for C4850C50ZX090610 | National HVAC Parts","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model C4850C50ZX090610\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 C4850C50ZX090610\u003c\/strong\u003e packaged unit. The transformer steps down line voltage from 120V to 24V to power the low-voltage control circuit — including the thermostat, contactor coil, and all safety controls. When the transformer fails, the entire control system goes dark: the thermostat loses power, the system will not respond to any call for heating or cooling, and you may find a blown fuse on the control board. It is one of the first components to inspect when nothing responds.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Primary voltage: 120V AC | Secondary voltage: 24V AC | VA rating: 40VA | OEM part number: HT01BD236 | Factory-matched output for stable low-voltage control circuit operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the factory OEM transformer engineered to Carrier's exact VA rating and insulation class. Generic transformers may carry loose VA tolerances, leading to voltage sag under load, nuisance fuse failures, and shortened contactor coil life.\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, needle-nose pliers, multimeter. Verify 24V output after installation before restoring control wiring. Photograph existing wiring connections prior to removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders placed by 3 PM local time ship 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 \u003cstrong\u003eCarrier C4850C50ZX090610\u003c\/strong\u003e packaged unit. Confirm your existing transformer's primary\/secondary voltage and VA rating on the unit's data plate or wiring diagram before ordering. Need help verifying fitment? Our HVAC parts specialists confirm compatibility before your order ships — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909766336883,"sku":"CARRIE-C4850C50ZX090610-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909766369651,"sku":"CARRIE-C4850C50ZX090610-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_fe3c8ac9-407e-462f-8cd0-082ac775b4fe.jpg?v=1782939094","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50zx090610-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}