{"product_id":"carrier-yac42110yacx102ak-transformer-fnyqxl","title":"OEM Carrier Transformer 50VA 120\/240-24V for YAC42110YACX102AK","description":"\u003ch1\u003eOEM Carrier Transformer 50VA 120\/208\/240-24V for Model YAC42110YACX102AK\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement step-down transformer (part number \u003cstrong\u003eP201-35150\u003c\/strong\u003e) for the Carrier \u003cstrong\u003eYAC42110YACX102AK\u003c\/strong\u003e HVAC system. The transformer converts incoming line voltage (120, 208, or 240 VAC) down to a safe 12\/24 VAC used to power the system's control board, thermostat, and all low-voltage components. When this transformer fails, the entire control circuit loses power — resulting in a completely unresponsive system, a blank thermostat, or a unit that will not heat or cool under any conditions. Do not attempt to run the system with a failed transformer, as secondary burnout can cascade into control board damage.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 50 VA rating | Primary voltage: 120\/208\/240 VAC | Secondary voltage: 12\/24 VAC | Single phase | 60 Hz | CSA listed | Single-phase control circuit application\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 the Carrier factory. Undersized or off-spec generic transformers can overheat, trip internal thermal cutoffs prematurely, or deliver unstable secondary voltage that causes nuisance lockouts and control board failures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Line voltage is present at the primary terminals; always shut off the unit's disconnect and verify zero voltage with a multimeter before wiring. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter, wire nuts or terminals. Photograph all wiring before disconnecting. Secondary circuit (24V) side is low-risk once line power is off.\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 Designed as the factory-specified transformer for Carrier model \u003cstrong\u003eYAC42110YACX102AK\u003c\/strong\u003e. Cross-references include Totaline P201-35150 and HCTY156D0LS11102. Verify your unit's primary voltage configuration (120V or 240V) matches your wiring before installation. Questions about fitment? Our HVAC parts specialists confirm compatibility before you order — \u003cstrong\u003eorder now and ship today!\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640193765747,"sku":"CARRIE-YAC42110YACX102AK-TRANSFORMER-P201-35150","price":56.7,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640193798515,"sku":"CARRIE-YAC42110YACX102AK-TRANSFORMER-P201-35150-GEN","price":20.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-P201-35150_783ad782-ad7e-4b50-a321-45d6ff021046.jpg?v=1782942907","url":"https:\/\/nationalhvacparts.com\/products\/carrier-yac42110yacx102ak-transformer-fnyqxl","provider":"National HVAC Parts","version":"1.0","type":"link"}