{"product_id":"carrier-ph4zna060000aa-transformer-h30291","title":"OEM Carrier Control Transformer 40VA 208\/230V-24V — PH4ZNA060000AA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/230V to 24V for Model PH4ZNA060000AA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part #HT01BD209) is the factory-specified replacement for the \u003cstrong\u003eCarrier PH4ZNA060000AA\u003c\/strong\u003e packaged unit. The transformer steps down 208\/230V line voltage to the 24V signal used by your thermostat, control board, and low-voltage safety circuit. When this component fails, the entire control circuit goes dead — symptoms include a blank thermostat, no system response to calls for heating or cooling, and a completely unresponsive unit. Replacing it with the correct OEM part restores full low-voltage control functionality immediately.\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 | Part # HT01BD209 | Replaces HT01BD207, HT01CN232, 9076-00\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances specified by Carrier engineering. Undersized or off-tolerance generic units can overdraw the secondary and damage your control board — a far more expensive repair.\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: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Always photograph or label wiring connections before disconnecting the old transformer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Factory-matched for \u003cstrong\u003eCarrier PH4ZNA060000AA\u003c\/strong\u003e packaged HVAC equipment. Verify your unit's model and data plate voltage (208\/230V) before ordering — a 460V unit requires a different transformer. Questions about fitment? Our HVAC parts specialists confirm compatibility before you order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641146855795,"sku":"CARRIE-PH4ZNA060000AA-TRANSFORMER-HT01BD209","price":50.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641146888563,"sku":"CARRIE-PH4ZNA060000AA-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_f635032f-b9ce-466b-80d0-9cf78b01e064.jpg?v=1775025469","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph4zna060000aa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}