{"product_id":"carrier-ph3znb060000aa-transformer-h30291","title":"OEM Carrier Transformer 40VA 208\/240V–24V for PH3ZNB060000AA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer 208\/240V to 24V for Model PH3ZNB060000AA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part #HT01BD209) is the factory-specified replacement for the \u003cstrong\u003eCarrier PH3ZNB060000AA\u003c\/strong\u003e packaged HVAC unit. The transformer steps down high-voltage line power (208\/240V) to the 24V signal voltage that powers the thermostat, control board, contactor coil, and every low-voltage safety circuit in the system. When this part fails, the entire control circuit goes dark — the thermostat loses communication, the system refuses to start, or a blown fuse is found on the control board. Replacing it with the correct OEM unit restores full factory function immediately.\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\/60 Hz compatible | Factory-matched for Carrier PH3ZNB060000AA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact factory VA tolerances, preventing voltage sag under full control-circuit load. Generic units can run low on VA capacity, causing intermittent lockouts, nuisance tripped fuses, and premature board failures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power and verify zero voltage before proceeding. Tools needed: screwdriver, wire stripper, multimeter. Label or photograph all wiring connections before removal. Swap wire-for-wire to the new transformer and restore power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock — 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\u003ePH3ZNB060000AA\u003c\/strong\u003e. Verify your unit's data plate shows 208\/240V primary input and 24V\/40VA control circuit before ordering. Our fitment team is available to confirm compatibility before you buy — order with confidence and get your system back online today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641330913651,"sku":"CARRIE-PH3ZNB060000AA-TRANSFORMER-HT01BD209","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641330946419,"sku":"CARRIE-PH3ZNB060000AA-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_73e4c501-f83a-46de-af92-5c4799e16c89.jpg?v=1782942237","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph3znb060000aa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}