{"product_id":"carrier-py3pna030060aa-transformer-h30291","title":"OEM Carrier Transformer 40VA 208\/240V–24V for PY3PNA030060AA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/240V to 24V for Model PY3PNA030060AA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part #HT01BD209) is the factory-specified 40VA step-down transformer for the \u003cstrong\u003eCarrier PY3PNA030060AA\u003c\/strong\u003e packaged unit. Its job is to convert the 208\/240V line voltage down to the 24V AC signal that powers your thermostat, control board, gas valve, and every other low-voltage component in the system. When this transformer fails, the entire control circuit goes dark — you'll see a blank thermostat display, no response to any call for heating or cooling, and potentially a tripped fuse or breaker on the secondary circuit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 208\/240V primary input | 24V secondary output | 40VA power rating | 50\/60Hz | OEM part #HT01BD209 | Direct factory replacement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound and tested to Carrier's exact VA and voltage tolerances. Undersized or off-tolerance aftermarket units can starve downstream components of current, causing erratic cycling, control board faults, or premature failure of the secondary circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always shut off power at the disconnect and verify zero voltage before touching any wiring. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Photograph all wiring connections before removing the old transformer. Secondary fuse (typically 3–5A) should be inspected and replaced if blown.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer 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 Factory-matched replacement for Carrier model \u003cstrong\u003ePY3PNA030060AA\u003c\/strong\u003e packaged units. The HT01BD209 is also the direct replacement for superseded Carrier part #HT01CN232. Verify your unit's data plate voltage specs before ordering. Have a question about fitment? Our HVAC parts specialists verify compatibility before your order ships — contact us today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640395092339,"sku":"CARRIE-PY3PNA030060AA-TRANSFORMER-HT01BD209","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640395125107,"sku":"CARRIE-PY3PNA030060AA-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_b045d27b-4fce-427a-8d9d-db75c7fb9324.jpg?v=1782942391","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3pna030060aa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}