{"product_id":"carrier-py3gpaa42060na-transformer-h30291","title":"OEM Carrier Control Transformer 40VA 208\/240V–24V for PY3GPAA42060NA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/240V to 24V for Model PY3GPAA42060NA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part number \u003cstrong\u003eHT01BD209\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier PY3GPAA42060NA\u003c\/strong\u003e packaged unit. The transformer steps down line voltage (208\/240V) to the 24V low-voltage signal required by the thermostat, control board, contactor coil, and all other 24V control circuit components. When this part fails, the entire control circuit goes dead — no thermostat response, no contactor pull-in, and no system operation. A failed transformer is often misdiagnosed as a control board issue, making correct identification critical before ordering other components.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 208\/240V Primary | 24V Secondary | 40VA | 50\/60Hz | OEM Part# HT01BD209 | Also supersedes HT01BD207, HT01CN232, 9076-00\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM transformer wound to exact VA and voltage tolerances. Undersized or off-tolerance aftermarket units can cause erratic cycling, nuisance tripping, or premature control board failure due to voltage sag under load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter (to verify 24V output after install). Label all wires before disconnecting. Typical job time: 20–30 minutes.\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 Engineered as the direct OEM replacement for \u003cstrong\u003eCarrier PY3GPAA42060NA\u003c\/strong\u003e packaged HVAC equipment. Verify your unit's data plate lists a 208\/240V primary and 24V secondary control circuit before ordering. Our fitment team is available to confirm compatibility before you buy — order with confidence and get your system running today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640438313331,"sku":"CARRIE-PY3GPAA42060NA-TRANSFORMER-HT01BD209","price":50.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640438346099,"sku":"CARRIE-PY3GPAA42060NA-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_95d6f4e8-8c17-4734-9c9b-bfe01fe8e1aa.jpg?v=1775025699","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3gpaa42060na-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}