{"product_id":"carrier-lc948lcfsrlt600-transformer-h301d7","title":"OEM Carrier Transformer 40VA 120V\/24V for LC948LCFSRLT600","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model LC948LCFSRLT600\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part number \u003cstrong\u003eHT01BD702\u003c\/strong\u003e) is the factory-specified step-down transformer for the \u003cstrong\u003eLC948LCFSRLT600\u003c\/strong\u003e unit. Its job is to convert 120V line voltage down to the 24V signal voltage that powers your thermostat, control board, and all low-voltage control circuits. When this transformer fails, nothing in the control system receives power — the thermostat goes dark, the system won't respond to calls for heating or cooling, and the unit sits completely unresponsive. A failed transformer is often misdiagnosed as a bad control board, so always verify transformer output with a multimeter before replacing costlier components.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA rating | 120V primary \/ 24V secondary | OEM part number HT01BD702 | Factory-matched output for stable control voltage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit is wound to exact Carrier factory specifications, ensuring consistent 24V output under full load. Generic transformers often under-deliver VA capacity, causing intermittent resets, nuisance lockouts, and premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always shut off power at the disconnect and breaker before servicing. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Photograph all wiring before disconnecting. Verify 24V output after installation before closing the cabinet.\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 for the Carrier \u003cstrong\u003eLC948LCFSRLT600\u003c\/strong\u003e. Confirm your existing transformer's VA rating and primary\/secondary voltage on the unit data plate or old component label before ordering. If you have any questions about fitment, our HVAC parts team is ready to verify compatibility before you buy — order with confidence and get your system back online fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909290283379,"sku":"CARRIE-LC948LCFSRLT600-TRANSFORMER-HT01BD702","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909290316147,"sku":"CARRIE-LC948LCFSRLT600-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_2009f8b6-7e29-4835-aaeb-5e4ee1dcf874.jpg?v=1782941736","url":"https:\/\/nationalhvacparts.com\/products\/carrier-lc948lcfsrlt600-transformer-h301d7","provider":"National HVAC Parts","version":"1.0","type":"link"}