{"product_id":"carrier-py3ppa048115aa-transformer-h30291","title":"OEM Carrier Control Transformer 40VA 208\/230V for PY3PPA048115AA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/230V–24V for Model PY3PPA048115AA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part #HT01BD209) is the factory-specified replacement for the \u003cstrong\u003eCarrier PY3PPA048115AA\u003c\/strong\u003e packaged unit. The transformer steps down 208\/230V line voltage to 24V AC, powering the low-voltage control circuit that drives your thermostat, contactor coils, and integrated control board. When this transformer fails, the entire control circuit goes dark — you'll see a blank thermostat display, a completely unresponsive system, or tripped low-voltage fuses that immediately blow again upon reset.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 208\/230V Primary | 24V Secondary | 40VA capacity | 50\/60 Hz | Replaces HT01BD207, HT01CN232, and 9076-00\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound and insulated to exact Carrier factory tolerances. Generic units may run with inconsistent secondary output voltage — even a 1–2V variance can cause nuisance lockouts or control board damage over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect before servicing. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or terminals. Always verify 24V output at secondary leads before powering the full control circuit. Photograph or label all wiring before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered for the Carrier \u003cstrong\u003ePY3PPA048115AA\u003c\/strong\u003e packaged unit. Cross-references confirmed with OEM part numbers HT01BD207, HT01CN232, and 9076-00. Always verify the voltage and VA rating on your unit's data plate before ordering. Our team is available to confirm fitment — just ask before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640352592243,"sku":"CARRIE-PY3PPA048115AA-TRANSFORMER-HT01BD209","price":87.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640352625011,"sku":"CARRIE-PY3PPA048115AA-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_50562142-96ff-4c99-b7b2-f40466703a07.jpg?v=1775025441","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3ppa048115aa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}