{"product_id":"carrier-pf1mnc024000aaaa-transformer-h3hwwy","title":"OEM Carrier 40VA Transformer 208\/230V–24V for PF1MNC024000AAAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer 208\/230V to 24V for Model PF1MNC024000AAAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer (part number \u003cstrong\u003eHT01CN241\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier PF1MNC024000AAAA\u003c\/strong\u003e fan coil unit. The transformer steps down line voltage (208\/230V primary) to the 24V AC signal that powers your thermostat, relays, safety circuits, and gas valve. When this part fails, the entire control circuit goes dark — the thermostat loses power, the unit stops responding to heating and cooling calls, and no other diagnostic steps can proceed until voltage is restored.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 208\/230V primary | 24V secondary | 40VA rated | 3.55\" × 2.5\" × 2.8\" | 2.0 lb. | Factory OEM dimensions for direct bracket fit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers from Carrier are wound to exact VA and voltage tolerances, ensuring stable 24V output under full control-circuit load. Generic units may exhibit voltage sag under load, causing intermittent lockouts and nuisance tripping on sensitive control boards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Always shut off power at the breaker and verify zero voltage before disconnecting. Tools needed: flathead and Phillips screwdriver, multimeter (to confirm 24V output post-install). Photograph existing wiring before removal. Typically a 15–30 minute repair for a qualified technician.\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 Engineered as the direct OEM replacement for \u003cstrong\u003eCarrier model PF1MNC024000AAAA\u003c\/strong\u003e fan coil units. Also cross-references with Bryant and Payne equipment sharing the HT01CN241 specification. Always verify primary voltage (208V or 230V) and VA rating on your unit's data plate before ordering. Have a fitment question? Our HVAC parts team verifies compatibility before every order — reach out before you buy.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62643340542323,"sku":"CARRIE-PF1MNC024000AAAA-TRANSFORMER-HT01CN241","price":108.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62643340575091,"sku":"CARRIE-PF1MNC024000AAAA-TRANSFORMER-HT01CN241-GEN","price":95.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01CN241_5ef62b92-a0fd-449e-a40e-59f8dddcb62e.jpg?v=1775016394","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pf1mnc024000aaaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}