{"product_id":"carrier-pf1mnc048000aaaa-transformer-h3hwwy","title":"OEM Carrier Transformer 40VA 208\/230V–24V for PF1MNC048000AAAA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/230V–24V for Model PF1MNC048000AAAA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier control transformer (part #HT01CN241) is the factory-specified replacement for the \u003cstrong\u003eCarrier PF1MNC048000AAAA\u003c\/strong\u003e fan coil \/ air handler unit. The transformer steps down the 208\/230V line voltage to the 24V AC signal that powers your thermostat, control board, and all low-voltage switching circuits. When this transformer fails, the entire control circuit goes dead — the thermostat goes blank, the system will not respond to any call for heating or cooling, and no fault codes can even be generated. A failed transformer is often misdiagnosed as a bad control board, so always check transformer output voltage first.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 208\/230V primary | 24V secondary | 40VA power rating | Direct OEM replacement for Carrier part #HT01CN241\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and voltage tolerances, protecting sensitive control boards from over- or under-voltage. Generic units may drift outside spec under load, causing intermittent control failures and premature board damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, needle-nose pliers. Verify 0V at terminals before disconnecting wires. Label all low-voltage leads prior to removal. Confirm 24V output at secondary terminals before closing the unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. Ships same business day from our warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits Carrier model \u003cstrong\u003ePF1MNC048000AAAA\u003c\/strong\u003e fan coil\/air handler units. Verify your existing transformer's primary voltage (208\/230V) and VA rating (40VA) against your unit's data plate before ordering. Our parts specialists are available to confirm fitment — contact us before you order. \u003cstrong\u003eIn stock and ships today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62643329433971,"sku":"CARRIE-PF1MNC048000AAAA-TRANSFORMER-HT01CN241","price":107.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62643329466739,"sku":"CARRIE-PF1MNC048000AAAA-TRANSFORMER-HT01CN241-GEN","price":94.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01CN241_671473b7-074c-4499-8f46-e6fc60e0dcb8.jpg?v=1775041529","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pf1mnc048000aaaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}