{"product_id":"carrier-py3pna048115na-transformer-h30291","title":"OEM Carrier Transformer 40VA 208\/240V–24V for PY3PNA048115NA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/240V to 24V — HT01BD209 for Model PY3PNA048115NA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part #HT01BD209) is the factory-specified replacement for the \u003cstrong\u003eCarrier PY3PNA048115NA\u003c\/strong\u003e packaged unit. The transformer steps down high-voltage line power to the 24V signal voltage that powers your thermostat, control board, and all low-voltage switching components. When the transformer fails, the entire control circuit goes dead — the thermostat goes blank, the system refuses to respond to any call for heating or cooling, and no fault codes can even be generated. Replacing the transformer is frequently the fastest path back to a fully operational system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Primary input 208\/240V | Secondary output 24V | 40VA power rating | 50\/60 Hz | OEM part number HT01BD209\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances for the PY3PNA048115NA control circuit. Generic units with loose tolerances can under-power sensitive control boards, leading to erratic behavior or premature board failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Turn off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Photograph or label all wiring connections before disconnecting the old 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 Designed for the Carrier \u003cstrong\u003ePY3PNA048115NA\u003c\/strong\u003e packaged unit. Verify your existing transformer's primary voltage, secondary voltage, and VA rating against your unit's data plate before ordering. Cross-references include HT01CN232 and HT01CN233. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you order — reach out today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640379494771,"sku":"CARRIE-PY3PNA048115NA-TRANSFORMER-HT01BD209","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640379527539,"sku":"CARRIE-PY3PNA048115NA-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_086ab07e-d986-4f1c-b1f6-c50113bd671b.jpg?v=1782942411","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3pna048115na-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}