{"product_id":"carrier-pf1mnb070000aaaa-transformer-h3hwwy","title":"OEM Carrier Transformer 208\/230V–24V 40VA for PF1MNB070000AAAA","description":"\u003ch1\u003eOEM Carrier Control Transformer 208\/230V–24V 40VA for Model PF1MNB070000AAAA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part number \u003cstrong\u003eHT01CN241\u003c\/strong\u003e) is the factory-specified 40VA step-down transformer for the \u003cstrong\u003eCarrier PF1MNB070000AAAA\u003c\/strong\u003e fan coil and air handler. It converts your system's 208\/230V line voltage down to the 24V AC that powers the entire low-voltage control circuit — including the thermostat, control board, zone valves, and relay coils. When this transformer fails, the result is total loss of control voltage: a blank thermostat, an unresponsive board, and a system that will not heat or cool regardless of any other component condition.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 208\/230V Primary | 24V Secondary | 40VA rated output | Direct OEM replacement for Carrier HT01CN241 | Factory-matched footprint and terminal configuration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact Carrier specifications with proper VA headroom and insulation class. Undersized or off-spec generic units can overheat, blow fuses, or damage downstream control boards — costing far more than the transformer itself.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the breaker before touching any terminals. Tools needed: flathead and Phillips screwdrivers, multimeter (to verify 24V output after install), wire stripper. Photograph existing wiring before disconnecting. Always verify fuse integrity in the control circuit before condemning the transformer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. In-stock units ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as the direct OEM replacement for the Carrier \u003cstrong\u003ePF1MNB070000AAAA\u003c\/strong\u003e fan coil unit. Verify your unit's data plate confirms 208\/230V primary input before ordering. Cross-references with ICP, Heil, Tempstar, and Comfortmaker systems sharing the HT01CN241 specification. Questions about fitment? Our HVAC parts team verifies compatibility before you order — call or chat today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62643342049651,"sku":"CARRIE-PF1MNB070000AAAA-TRANSFORMER-HT01CN241","price":108.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62643342082419,"sku":"CARRIE-PF1MNB070000AAAA-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_9ff1d409-ac80-4d60-b4da-10292350baa9.jpg?v=1775041162","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pf1mnb070000aaaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}