{"product_id":"carrier-py3ppa036060aa-transformer-h30291","title":"OEM Carrier Transformer 40VA 208\/240V–24V for PY3PPA036060AA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/240V to 24V — HT01BD209 for Model PY3PPA036060AA\u003c\/h1\u003e\u003cp\u003eThe Carrier HT01BD209 is the factory OEM control transformer for the \u003cstrong\u003ePY3PPA036060AA\u003c\/strong\u003e packaged unit. This transformer steps down line voltage (208\/240V) to the 24V signal used by the thermostat, control board, contactor coil, and all low-voltage safety circuits. When it fails — due to a short in the low-voltage wiring, a blown fuse, or age-related winding breakdown — the entire control circuit goes dead: the thermostat goes blank, the system will not respond to any call for heating or cooling, and no diagnostic codes will display.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input 208\/240V AC | Output 24V AC | 40VA power rating | 50\/60Hz | Direct OEM replacement for Carrier part HT01BD209 (supersedes HT01CN232)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and impedance specifications required by Carrier's control board. Generic units with loose VA tolerances can cause nuisance tripping of downstream fuses or damage sensitive board circuitry over time.\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 starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Label and photograph all wiring before disconnecting the old transformer.\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 Engineered specifically for the Carrier \u003cstrong\u003ePY3PPA036060AA\u003c\/strong\u003e packaged unit. Always verify the part number on your existing transformer's label and your unit's data plate before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640364192115,"sku":"CARRIE-PY3PPA036060AA-TRANSFORMER-HT01BD209","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640364224883,"sku":"CARRIE-PY3PPA036060AA-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_2969d4c1-7f30-47c7-aac3-d16e05cf497c.jpg?v=1782942426","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3ppa036060aa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}