{"product_id":"carrier-pf1mnb048000aaaa-transformer-h3hwwy","title":"OEM Carrier 24V Control Transformer HT01CN241 for PF1MNB048000AAAA","description":"\u003ch1\u003eOEM Carrier 24V Control Transformer HT01CN241 for Model PF1MNB048000AAAA\u003c\/h1\u003e\u003cp\u003eThis OEM control transformer (part number \u003cstrong\u003eHT01CN241\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier PF1MNB048000AAAA\u003c\/strong\u003e air handler. The transformer steps down 120V line voltage to the 24V signal needed to power the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When this transformer fails, nothing in the system responds: the thermostat goes blank, the system won't call for heating or cooling, and the unit sits completely dead despite line power being present.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 120V primary → 24V secondary | 40VA rated | Factory-matched OEM replacement | Compatible with standard Class 2 control wiring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the factory OEM unit built to Carrier's exact VA and voltage tolerance specifications. Generic transformers may run undervoltage under load, causing erratic contactor chatter and nuisance board lockouts that are difficult to diagnose.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off all power (line and control) before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Confirm 24V output post-install with a multimeter before reconnecting the thermostat. Photograph all wiring before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Fits Carrier model \u003cstrong\u003ePF1MNB048000AAAA\u003c\/strong\u003e air handler. Verify primary voltage (120V) and VA rating on your unit's data plate before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you buy — contact us before placing your order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62643342442867,"sku":"CARRIE-PF1MNB048000AAAA-TRANSFORMER-HT01CN241","price":34.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62643342475635,"sku":"CARRIE-PF1MNB048000AAAA-TRANSFORMER-HT01CN241-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01CN241_5ead2310-80b1-43ad-840b-4613b532180c.jpg?v=1775015779","url":"https:\/\/nationalhvacparts.com\/products\/carrier-pf1mnb048000aaaa-transformer-h3hwwy","provider":"National HVAC Parts","version":"1.0","type":"link"}