{"product_id":"carrier-py3pna048130nb-transformer-h30291","title":"OEM Carrier Control Transformer 40VA 208\/240V–24V — PY3PNA048130NB","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/240V to 24V for Model PY3PNA048130NB\u003c\/h1\u003e\u003cp\u003eThis genuine OEM Carrier control transformer (part# HT01BD209) is the factory-specified replacement for the \u003cstrong\u003eCarrier PY3PNA048130NB\u003c\/strong\u003e packaged unit. The transformer steps down 208\/240V line voltage to the 24V low-voltage signal that powers every critical control circuit in your system — including the thermostat, contactor coil, control board, and safety switches. When it fails, nothing works: the thermostat goes dark, the system refuses to respond to any call, and the blower and compressor will not energize. A failed transformer is often misdiagnosed as a thermostat or control board fault, making correct identification and prompt replacement essential.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA | Primary: 208\/240V | Secondary: 24V | 50\/60Hz | Class 2 control transformer | Factory-matched for Carrier PY3PNA048130NB\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 your unit. Generic units can run hot under full control load, tripping thermal protection and causing intermittent lockouts — always choose OEM for transformers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the disconnect before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Always verify 24VAC output after installation before buttoning up the panel.\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 Direct OEM replacement for Carrier model \u003cstrong\u003ePY3PNA048130NB\u003c\/strong\u003e. Also replaces legacy Carrier part numbers HT01BD207, HT01CN232, and 9076-00. Verify your existing transformer's primary voltage and VA rating on the data plate before ordering. Our fitment team is available to confirm compatibility prior to purchase.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640377004403,"sku":"CARRIE-PY3PNA048130NB-TRANSFORMER-HT01BD209","price":50.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640377037171,"sku":"CARRIE-PY3PNA048130NB-TRANSFORMER-HT01BD209-GEN","price":44.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BD209_321adc00-529f-4b2a-b179-826f9aa40bfd.jpg?v=1775025807","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3pna048130nb-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}