{"product_id":"carrier-py3pna048130na-transformer-h30291","title":"OEM Carrier Transformer 40VA 208\/240V–24V for PY3PNA048130NA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/240V to 24V — HT01BD209 for Model PY3PNA048130NA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part #HT01BD209) is the factory-specified replacement for the \u003cstrong\u003eCarrier PY3PNA048130NA\u003c\/strong\u003e packaged unit. The transformer steps down 208\/240V line voltage to the 24V signal used by your thermostat, control board, contactor coil, and every other low-voltage component in the system. When it fails, the entire control circuit goes dead — the thermostat goes blank, the unit will not respond to any call for heating or cooling, and no low-voltage components will operate.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 208\/240V primary input | 24V secondary output | 40VA power rating | 50\/60 Hz | Direct OEM replacement for superseded part HT01CN232\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This factory OEM transformer is wound to exact Carrier tolerances, ensuring stable 24V output under full load. Generic transformers often exhibit voltage sag under peak demand, causing nuisance lockouts, erratic thermostat behavior, and premature control board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Always photograph wiring and label leads before disconnecting the old transformer. Verify 24V output with a multimeter after installation before reassembling the unit.\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 for the Carrier \u003cstrong\u003ePY3PNA048130NA\u003c\/strong\u003e packaged unit. Verify your existing transformer's primary voltage and VA rating on the unit data plate before ordering — this unit is rated 208\/240V primary, 24V secondary, 40VA. Our team is happy to confirm fitment before you order. Order by 3PM and your part ships today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640377528691,"sku":"CARRIE-PY3PNA048130NA-TRANSFORMER-HT01BD209","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640377561459,"sku":"CARRIE-PY3PNA048130NA-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_7d6fa39b-8460-45c7-a144-288aa414b00c.jpg?v=1782942416","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3pna048130na-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}