{"product_id":"carrier-py3ppa042060aa-transformer-h30291","title":"OEM Carrier Control Transformer 40VA 208\/230V — PY3PPA042060AA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/230V to 24V for Model PY3PPA042060AA\u003c\/h1\u003e\u003cp\u003eThe \u003cstrong\u003eCarrier HT01BD209\u003c\/strong\u003e is the factory OEM control transformer for the \u003cstrong\u003ePY3PPA042060AA\u003c\/strong\u003e packaged heat pump unit. This transformer steps down line voltage (208\/230V primary) to the 24V AC signal that powers your thermostat, control board, and every low-voltage component in the system. When this transformer fails, the entire control circuit goes dark — symptoms include a completely unresponsive thermostat, a blank display, or a system that simply won't respond to any call for heating or cooling despite power being present at the unit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 40VA capacity | 208\/230V primary input | 24V secondary output | 50\/60 Hz | Direct OEM replacement for Carrier part HT01BD209 | Replaces legacy P\/Ns HT01BD207 and HT01CN232\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM transformer wound to exact factory VA and voltage specifications. Generic transformers often carry under-rated VA capacity, causing premature thermal cutout trips and unreliable low-voltage signal delivery to the control board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Disconnect all power before servicing. Tools needed: multimeter (to verify 24V output post-install), flathead and Phillips screwdrivers, wire stripper, and electrical tape or wire nuts. Always label or photograph existing wire connections — primary and secondary leads must be connected correctly to prevent control board damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse when ordered by 3PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as the direct OEM replacement transformer for Carrier model \u003cstrong\u003ePY3PPA042060AA\u003c\/strong\u003e. Verify your unit's data plate confirms 208\/230V primary voltage before ordering. Not sure it fits? Our HVAC parts team will verify fitment before you order — no guesswork, no return hassle.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640359768435,"sku":"CARRIE-PY3PPA042060AA-TRANSFORMER-HT01BD209","price":87.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640359801203,"sku":"CARRIE-PY3PPA042060AA-TRANSFORMER-HT01BD209-GEN","price":77.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01BD209_6c6294c7-b292-445f-862b-c43c9469ca0d.jpg?v=1775025464","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3ppa042060aa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}