{"product_id":"carrier-py3pna048130ab-transformer-h30291","title":"OEM Carrier Control Transformer 40VA 208\/230V — HT01BD209 PY3PNA048130","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/230V for Model PY3PNA048130AB\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier control transformer (part #HT01BD209) factory-specified for the \u003cstrong\u003eCarrier PY3PNA048130AB\u003c\/strong\u003e packaged HVAC unit. The transformer steps line voltage down from 208\/230V to a stable 24V signal that powers the thermostat, control board, contactors, and every other low-voltage component in your system. When this transformer fails — often from a shorted control wire or a failed component drawing excess current — the entire 24V control circuit goes dead: your thermostat goes blank, the system will not respond to any command, and nothing turns on. Replacing this transformer is the essential first step in restoring full system operation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 208\/230V primary | 24V secondary | 40VA rated | 50\/60 Hz | Replaces OEM part numbers HT01BD207 and HT01CN232\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This OEM unit is wound and insulated to Carrier's exact VA tolerance and thermal rating. Undersized or off-spec generic transformers can overheat, trip their internal fuse, or fail again within weeks — especially if the original root-cause short has not been fully resolved.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit before proceeding. Tools needed: multimeter (to confirm 0V before touching wires and 24V output after install), flathead and Phillips screwdrivers, wire nuts or spade connectors. Photograph all wire connections before disconnecting. Check all low-voltage wiring for shorts before energizing the new transformer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. 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 \u003cstrong\u003eCarrier model PY3PNA048130AB\u003c\/strong\u003e packaged units requiring a 208\/230V primary, 24V secondary, 40VA control transformer. Confirm input voltage on your unit's data plate before ordering. Our fitment team is available to verify compatibility before you buy — don't hesitate to reach out.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640378184051,"sku":"CARRIE-PY3PNA048130AB-TRANSFORMER-HT01BD209","price":50.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640378216819,"sku":"CARRIE-PY3PNA048130AB-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_29d81124-0c48-4e5e-97f8-fa218215ea7a.jpg?v=1775025449","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3pna048130ab-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}