{"product_id":"carrier-ph10ja024000adaa-transformer-h4oyjb","title":"OEM Carrier Transformer 120V–24V 40VA for PH10JA024000ADAA","description":"\u003ch1\u003eOEM Carrier Control Transformer HT01AW229 for Model PH10JA024000ADAA\u003c\/h1\u003e\u003cp\u003eThis is the factory OEM replacement control transformer (part number \u003cstrong\u003eHT01AW229\u003c\/strong\u003e) for the \u003cstrong\u003eCarrier PH10JA024000ADAA\u003c\/strong\u003e heat pump system. The transformer steps down line voltage from 120V to a safe 24V AC signal that powers the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When this transformer fails, \u003cem\u003enothing works\u003c\/em\u003e: the thermostat goes blank, the system is completely unresponsive, and no heating or cooling operation is possible. A blown transformer is often caused by a shorted thermostat wire or a faulty control board drawing excess current — always inspect the low-voltage wiring before replacing.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 120V primary input | 24V AC secondary output | 40VA rated | Factory-matched OEM specification for Carrier PH10JA024000ADAA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM part, engineered to exact VA rating and insulation class. Generic transformers frequently run under-rated VA, causing premature thermal cutout and nuisance shutdowns under normal control-circuit load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter (to verify 24V output after install). Label all low-voltage wires before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. Ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed and factory-specified for the Carrier \u003cstrong\u003ePH10JA024000ADAA\u003c\/strong\u003e heat pump. 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 — \u003cstrong\u003eorder now and ships today!\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62642023235955,"sku":"CARRIE-PH10JA024000ADAA-TRANSFORMER-HT01AW229","price":35.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62642023268723,"sku":"CARRIE-PH10JA024000ADAA-TRANSFORMER-HT01AW229-GEN","price":30.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01AW229_05c9c1ff-9f31-40ee-98f5-fb1b41765f9c.jpg?v=1775041047","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph10ja024000adaa-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}