{"product_id":"carrier-lc750lccmrayx601-transformer-h301d7","title":"OEM Carrier Transformer 40VA 120V\/24V for LC750LCCMRAYX601","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BD702 for Model LC750LCCMRAYX601\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01BD702\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier LC750LCCMRAYX601\u003c\/strong\u003e. The transformer steps down line voltage from 120V to the 24V AC required to power the control board, thermostat, contactor coil, and all low-voltage control circuits. When this part fails, the entire control circuit goes dead — the thermostat goes blank, the system stops responding to calls for heating or cooling, and in some cases a tripped fuse or burnt smell may be the only visible clue.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA output | 120V primary \/ 24V secondary | Factory OEM part number HT01BD702 | Designed to Carrier's exact fit and electrical specifications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to precise VA ratings, ensuring stable 24V output under full control circuit load. Generic replacements often run undervoltage, causing intermittent lockouts, contactor chatter, and 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 beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or terminal connectors. Verify 24V output with a multimeter after installation before restoring full system power.\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 as a direct OEM replacement for the \u003cstrong\u003eCarrier LC750LCCMRAYX601\u003c\/strong\u003e. Always confirm your existing transformer's VA rating and primary\/secondary voltages on the unit's data plate or wiring diagram before ordering. Our parts specialists are available to verify fitment — order with confidence.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909290479987,"sku":"CARRIE-LC750LCCMRAYX601-TRANSFORMER-HT01BD702","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909290512755,"sku":"CARRIE-LC750LCCMRAYX601-TRANSFORMER-HT01BD702-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-HT01BD702_31c04201-6567-46f5-8a5b-068cc455973f.jpg?v=1782941733","url":"https:\/\/nationalhvacparts.com\/products\/carrier-lc750lccmrayx601-transformer-h301d7","provider":"National HVAC Parts","version":"1.0","type":"link"}