{"product_id":"carrier-py3gna048130ab-transformer-h30291","title":"OEM Carrier Control Transformer 40VA 208\/240V for PY3GNA048130AB","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/240V to 24V for Model PY3GNA048130AB\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier control transformer (part #HT01BD209) factory-specified for the \u003cstrong\u003eCarrier PY3GNA048130AB\u003c\/strong\u003e packaged unit. The transformer steps line voltage (208\/240V) down to the 24V used by your thermostat, control board, contactor coil, and every low-voltage safety circuit in the system. When this transformer fails, the entire control circuit goes dark — nothing responds, the thermostat goes blank, and the system will not start. A failed transformer is often misdiagnosed as a bad control board, making correct identification critical before replacing more expensive components.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 208\/240V primary | 24V secondary | 40VA rated | 50\/60Hz | Weight approx. 1.3 lbs | Also replaces HT01BD207, HT01CN232, and 9076-00\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM HT01BD209 is factory-wound to exact VA and impedance tolerances for Carrier systems. Undersized or off-tolerance aftermarket transformers can trip repeatedly or fail prematurely under full 24V control-circuit load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Always verify 0V at primary leads before handling. Photo-document all wire connections before removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse — no waiting weeks for a direct-from-supplier order.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as the direct OEM replacement for \u003cstrong\u003eCarrier PY3GNA048130AB\u003c\/strong\u003e packaged units. Verify your unit's data plate shows 208\/240V primary voltage before ordering. Our fitment team is available to confirm compatibility before you buy — no guesswork, no return shipping headaches.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640470557043,"sku":"CARRIE-PY3GNA048130AB-TRANSFORMER-HT01BD209","price":87.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640470589811,"sku":"CARRIE-PY3GNA048130AB-TRANSFORMER-HT01BD209-GEN","price":77.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BD209_0d405c19-66d5-402b-add7-16bed90f7921.jpg?v=1775025567","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3gna048130ab-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}