{"product_id":"carrier-c4850c50z3050600-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C4850C50Z3050600","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model C4850C50Z3050600\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part number \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified step-down transformer for the \u003cstrong\u003eC4850C50Z3050600\u003c\/strong\u003e packaged unit. It converts 120V line voltage to the 24V AC signal that powers the entire control circuit — including the thermostat, contactor coil, gas valve, and control board. When this transformer fails, the system goes completely unresponsive: the thermostat goes blank, nothing energizes, and the unit will not heat or cool. A failed transformer is often mistaken for a bad thermostat or control board, making it the first component to test when the control circuit is dead.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rated | 120V primary \/ 24V secondary | Class 2 output | Factory-matched impedance for Carrier C4850C50Z3050600 packaged unit controls\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit (HT01BD236) is wound to Carrier's exact VA and impedance specifications. Undersized or off-brand transformers can overheat, trip their internal fuse, or fail to sustain 24V under full control-circuit load — leading to intermittent lockouts and repeat service calls.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the disconnect and breaker before servicing. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or terminal connectors. Test incoming 120V and output 24V with a multimeter after installation to confirm proper operation before buttoning up the unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for Carrier model \u003cstrong\u003eC4850C50Z3050600\u003c\/strong\u003e packaged units. Always verify your existing transformer's VA rating and primary\/secondary voltages on the unit's data plate before ordering. If you're unsure of fitment, our HVAC parts specialists are available to confirm compatibility before your order ships — no guesswork, no returns.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909795074419,"sku":"CARRIE-C4850C50Z3050600-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909795107187,"sku":"CARRIE-C4850C50Z3050600-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_d57a1151-62b1-49c9-b55b-ef9b2b959674.jpg?v=1782940130","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c50z3050600-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}