{"product_id":"carrier-pf1mnb042000aaaa-transformer-h3hwwy","title":"OEM Carrier Transformer 208\/230V–24V 40VA for PF1MNB042000AAAA","description":"\u003ch1\u003eOEM Carrier Control Transformer 208\/230V–24V 40VA for Model PF1MNB042000AAAA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier replacement transformer (part number \u003cstrong\u003eHT01CN241\u003c\/strong\u003e) for the \u003cstrong\u003ePF1MNB042000AAAA\u003c\/strong\u003e fan coil and air handler unit. The control transformer steps down the 208\/230V line voltage to the 24V signal required by your thermostat, control board, contactor coil, and all low-voltage safety circuits. When this transformer fails, the entire control circuit goes dark — your thermostat goes blank, your system refuses to start, and no heating or cooling is delivered. Replacing it with the correct OEM part restores full factory operation immediately.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 208\/230V Primary | 24V Secondary | 40VA output rating | Direct OEM fitment for Carrier HT01CN241 — matches factory wiring harness and mounting footprint exactly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM Carrier transformers are wound to exact VA and voltage tolerances, protecting sensitive control boards and thermostats from voltage sags or surges. Generic transformers often run under-rated VA, causing nuisance tripping of internal breakers and premature board failures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label or photograph all low-voltage wiring connections (R, C, Y, W, G) before disconnecting. Confirm 24VAC output with a multimeter after installation before restoring full power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer's warranty. In-stock and ships same business day from our warehouse when ordered by 5PM.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered and factory-specified for the Carrier \u003cstrong\u003ePF1MNB042000AAAA\u003c\/strong\u003e fan coil\/air handler. This transformer is also cross-referenced across the Carrier, Bryant, Payne, ICP, Heil, and Tempstar equipment families sharing the HT01CN241 specification. Always verify your unit's data plate shows 208\/230V primary voltage before ordering. Have your model number ready and our fitment team will confirm compatibility before you purchase — contact us today and ship today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62643342672243,"sku":"CARRIE-PF1MNB042000AAAA-TRANSFORMER-HT01CN241","price":108.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62643342705011,"sku":"CARRIE-PF1MNB042000AAAA-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_ac5a4fb6-37df-4383-b64e-1ce8df4ae668.jpg?v=1775041159","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pf1mnb042000aaaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}