{"product_id":"carrier-fiop200e501ga-transformer-h30291","title":"OEM Carrier Transformer 40VA 120V\/24V for FIOP200E501GA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 120V\/24V for Model FIOP200E501GA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement control transformer (part number \u003cstrong\u003eHT01BD209\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier FIOP200E501GA\u003c\/strong\u003e. The transformer steps down 120V line voltage to the 24V signal voltage required by your thermostat, control board, and low-voltage safety circuits. When this component fails, the entire control circuit goes dead — your thermostat loses power, the system won't respond to calls for heating or cooling, and no error codes will display because the board itself has no power to operate.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input 120VAC | Output 24VAC | 40VA rated | OEM part number HT01BD209 | Factory-matched for precise low-voltage circuit performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is wound to Carrier's exact VA and voltage tolerances. Generic transformers frequently deliver inconsistent output voltage, which can damage sensitive control boards and intermittently drop thermostat signals, leading to misdiagnosis and unnecessary part replacements.\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, needle-nose pliers, multimeter to verify 24V output after installation. Label and photograph all low-voltage wiring connections before disconnecting the old transformer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. 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 and factory-specified for Carrier model \u003cstrong\u003eFIOP200E501GA\u003c\/strong\u003e. Always confirm input voltage and VA rating on your unit's data plate match this part before ordering. Our parts specialists are available to verify fitment — don't hesitate to reach out before placing your order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909506093427,"sku":"CARRIE-FIOP200E501GA-TRANSFORMER-HT01BD209","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909506126195,"sku":"CARRIE-FIOP200E501GA-TRANSFORMER-HT01BD209-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-HT01BD209_d4b2353a-7d23-4cee-aea7-a58c2ecbf8a5.jpg?v=1782941051","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fiop200e501ga-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}