{"product_id":"carrier-py1pnb042060aaaa-transformer-h30291","title":"OEM Carrier Transformer 40VA 208\/240V–24V for PY1PNB042060AAAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer 208\/240V to 24V — HT01BD209 for Model PY1PNB042060AAAA\u003c\/h1\u003e\u003cp\u003eThe Carrier HT01BD209 is the factory-specified OEM control transformer for the \u003cstrong\u003eCarrier PY1PNB042060AAAA\u003c\/strong\u003e packaged unit. This transformer steps down 208\/240V line voltage to the 24V AC signal that powers your thermostat, control board, gas valve, and all low-voltage safety circuits. When it fails, the entire control circuit goes dark — no thermostat response, no call-for-heat or call-for-cool, and no error codes because the board itself has lost power. A failed transformer is often misdiagnosed as a board failure, making correct identification critical before any repair.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input 208\/240V | Output 24V | Rating 40VA | Frequency 50\/60Hz | Class 2 control transformer | Factory-matched OEM tolerances\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM units are wound and insulated to Carrier's exact factory specifications, ensuring stable 24V output under full control-circuit load. Generic transformers may underperform at rated VA, causing erratic low-voltage behavior or premature failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect all power before servicing. Tools needed: multimeter (verify 0V before touching leads), flathead and Phillips screwdrivers, wire stripper. Always verify input and output voltages with a meter after installation before restoring full power.\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 Direct OEM replacement for Carrier model \u003cstrong\u003ePY1PNB042060AAAA\u003c\/strong\u003e packaged units. Confirm your unit's data plate shows 208\/240V primary input before ordering. Not sure if this is the right part? Our HVAC parts specialists verify fitment before you buy — contact us today and ship with confidence.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640902504819,"sku":"CARRIE-PY1PNB042060AAAA-TRANSFORMER-HT01BD209","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640902537587,"sku":"CARRIE-PY1PNB042060AAAA-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_3b2e4c8d-b0bd-4615-a82a-7bbf5e818b1d.jpg?v=1782942264","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py1pnb042060aaaa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}