{"product_id":"carrier-pf1mnc018008aaaa-transformer-h3hwwy","title":"OEM Carrier 40VA Transformer HT01CN241 for PF1MNC018008AAAA","description":"\u003ch1\u003eOEM Carrier Transformer HT01CN241 for Model PF1MNC018008AAAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement transformer for the \u003cstrong\u003eCarrier PF1MNC018008AAAA\u003c\/strong\u003e fan coil unit. The transformer steps down 120V line voltage to 24V AC to power the low-voltage control circuit — including the thermostat, contactor coils, and control board. When the transformer fails, the entire control circuit goes dead: your thermostat becomes unresponsive, the system won't call for heating or cooling, and a multimeter across the 24V secondary will read zero volts. Replacing the transformer is the quickest path to restoring full system function.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e OEM part number HT01CN241 | 120V primary → 24V secondary | 40VA rating | Factory-matched output for Carrier PF1MNC018008AAAA control circuit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound and insulated to Carrier's exact VA rating and thermal protection specs. Generic substitutes often carry looser VA tolerances that can cause nuisance trips or premature burnout under high-demand control circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Label all low-voltage wires before disconnecting and verify 24V output with a meter after installation before closing the panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders placed before cutoff ship the same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the \u003cstrong\u003eCarrier PF1MNC018008AAAA\u003c\/strong\u003e fan coil unit. Confirm the 120V\/24V 40VA transformer specification on your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists verify exact fitment before you buy — contact us before placing your order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62643341394291,"sku":"CARRIE-PF1MNC018008AAAA-TRANSFORMER-HT01CN241","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62643341427059,"sku":"CARRIE-PF1MNC018008AAAA-TRANSFORMER-HT01CN241-GEN","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-HT01CN241_d3e51da3-f550-4bbc-9aea-52d8936a4338.jpg?v=1782900069","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pf1mnc018008aaaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}