{"product_id":"carrier-pf1mnb024005aaaa-transformer-h3hwwy","title":"OEM Carrier Transformer 40VA 208\/230V–24V for PF1MNB024005AAAA","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer 208\/230V–24V for Model PF1MNB024005AAAA\u003c\/h1\u003e\u003cp\u003eThe \u003cstrong\u003eCarrier HT01CN241\u003c\/strong\u003e is the factory-specified OEM control transformer for the \u003cstrong\u003ePF1MNB024005AAAA\u003c\/strong\u003e fan coil and air handler unit. This transformer steps down 208\/230V line voltage to a safe 24V AC output, powering the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When this part fails, the result is total control loss: the thermostat goes dark, the system won't respond to calls for heating or cooling, and no low-voltage components will operate. It is one of the first parts to check when a system shows zero response despite confirmed line voltage at the unit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 208\/230V primary | 24V secondary | 40VA power rating | Direct OEM drop-in replacement | Part number HT01CN241\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and impedance tolerances required by Carrier. Undersized or off-spec generic transformers can blow onboard fuses, trip thermal cutoffs, or cause erratic control board behavior — costing far more in callbacks than the price difference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (verify 0V before touching terminals). Note wire colors and terminal labels before removal. Replacement typically takes 20–30 minutes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. In-stock orders ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e This is the direct OEM replacement transformer for the Carrier \u003cstrong\u003ePF1MNB024005AAAA\u003c\/strong\u003e. Always verify your existing transformer's primary voltage, secondary voltage, and VA rating on its label before ordering. Our fitment team is available to confirm compatibility before you purchase — no guesswork required.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62643345391987,"sku":"CARRIE-PF1MNB024005AAAA-TRANSFORMER-HT01CN241","price":107.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62643345424755,"sku":"CARRIE-PF1MNB024005AAAA-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_06ec87ca-bac1-4a2c-ae7a-b8be3277fe63.jpg?v=1775041502","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pf1mnb024005aaaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}