{"product_id":"carrier-c4850c50z3070200-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V to 24V for C4850C50Z3070200 — Ships Today","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model C4850C50Z3070200\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 C4850C50Z3070200\u003c\/strong\u003e packaged unit. The transformer converts 120V line voltage down to the 24V signal used by the control board, thermostat, contactor coil, and all low-voltage safety circuits. When this component fails, the entire control circuit goes dead — the thermostat shows no response, the contactor never energizes, and the system will not heat or cool under any circumstance. It is often the first component to diagnose when a unit appears completely unresponsive.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | Primary: 120VAC | Secondary: 24VAC | OEM part number HT01BD236 | Factory-matched output for stable low-voltage control operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer meets Carrier's exact VA rating and winding tolerances. Undersized or off-spec generic transformers can overheat, trip the integral fuse, or deliver unstable 24V output that causes nuisance control board faults and contactor chatter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Photograph all wiring connections before removal. The transformer mounts to the control panel with a single bracket screw on most configurations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. In-stock units ship same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the Carrier \u003cstrong\u003eC4850C50Z3070200\u003c\/strong\u003e packaged unit. Always verify your existing transformer's VA rating and primary\/secondary voltages on the unit data plate or wiring schematic before ordering — some unit variants may use a 40VA transformer with a built-in fuse holder. Our HVAC parts specialists are available to confirm fitment before you purchase. Order today and receive same-day shipping on all in-stock parts.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909788258675,"sku":"CARRIE-C4850C50Z3070200-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909788291443,"sku":"CARRIE-C4850C50Z3070200-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_78bca71d-0128-4e80-8c0a-dedaf67c8dfa.jpg?v=1782939026","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50z3070200-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}