{"product_id":"carrier-c4850c48zg090610-transformer-h302a1","title":"OEM Carrier Transformer 40VA 120V\/24V for C4850C48ZG090610","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA for Model C4850C48ZG090610\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part# \u003cstrong\u003eHT01BD236\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eC4850C48ZG090610\u003c\/strong\u003e packaged unit. The transformer steps down line voltage (120V) to the 24V signal used by the control board, thermostat, contactor coil, and safety circuit. When this component fails, the entire low-voltage control circuit goes dead — the thermostat goes blank, the system stops responding to calls for heating or cooling, and no other components will operate. It is often the first component to check when nothing works and the breaker is not tripped.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA capacity | 120V primary \/ 24V secondary | Class 2 control circuit transformer | OEM part number HT01BD236 | Factory-matched for Carrier C4850C48ZG090610 packaged units\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM HT01BD236 transformer is wound to exact VA and impedance specifications for Carrier's control circuit. Generic replacements can deliver unstable 24V output under load, causing nuisance lockouts, contactor chatter, or premature control 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 screwdriver, multimeter, wire stripper. Verify 24V output at secondary terminals after installation before restoring full power. Photograph all wiring connections before removal.\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 Engineered specifically for the Carrier \u003cstrong\u003eC4850C48ZG090610\u003c\/strong\u003e packaged unit. Verify transformer VA rating and primary\/secondary voltages on your unit's data plate before ordering. If you are unsure of fitment, our HVAC parts specialists verify compatibility before you purchase — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909861429619,"sku":"CARRIE-C4850C48ZG090610-TRANSFORMER-HT01BD236","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909861462387,"sku":"CARRIE-C4850C48ZG090610-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_c81b6ee3-fac7-4f9c-96b5-b9cfe29f19db.jpg?v=1782940112","url":"https:\/\/nationalhvacparts.com\/products\/carrier-c4850c48zg090610-transformer-h302a1","provider":"National HVAC Parts","version":"1.0","type":"link"}