{"product_id":"carrier-py3ppa048115ab-transformer-h30291","title":"OEM Carrier Transformer 40VA 208\/240V–24V for PY3PPA048115AB","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer 208\/240V to 24V for Model PY3PPA048115AB\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement control transformer for the \u003cstrong\u003eCarrier PY3PPA048115AB\u003c\/strong\u003e packaged unit. The transformer steps down line voltage from 208\/240V to the 24V signal used by your thermostat, control board, and every low-voltage component in the system. When this transformer fails, the entire control circuit loses power — resulting in a completely unresponsive thermostat, no call for heat or cooling, and a system that appears totally dead at the unit even though line voltage is present.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input: 208\/240V | Output: 24V | Frequency: 50\/60 Hz | Power Rating: 40VA | OEM Part Number: HT01BD209\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM transformer is factory-wound to exact Carrier VA and voltage tolerances. Off-brand replacements can deliver unstable 24V output, 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 — Always shut off all power before starting. Tools needed: multimeter, flathead and Phillips screwdrivers, wire strippers, needle-nose pliers. Verify 24V output across secondary terminals after installation before restoring full system 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\u003ePY3PPA048115AB\u003c\/strong\u003e. Also fits additional Carrier, Bryant, and Payne models using the HT01BD209 specification — verify your unit's data plate voltage and VA rating before ordering. Our fitment team is available to confirm compatibility before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640351740275,"sku":"CARRIE-PY3PPA048115AB-TRANSFORMER-HT01BD209","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640351773043,"sku":"CARRIE-PY3PPA048115AB-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_5aaa8e38-8332-46fb-8869-1e9d7ba1ff5b.jpg?v=1782942436","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3ppa048115ab-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}