{"product_id":"carrier-ph10ja018000abaa-transformer-h4oyjb","title":"OEM Carrier 60VA Control Transformer 115\/208\/230V–24V for PH10JA018000","description":"\u003ch1\u003eOEM Carrier 60VA Control Transformer HT01AW229 for Model PH10JA018000ABAA\u003c\/h1\u003e\u003cp\u003eThis is the OEM factory-specified control transformer for the \u003cstrong\u003eCarrier PH10JA018000ABAA\u003c\/strong\u003e packaged heat pump unit. The control transformer steps down the high-voltage supply (115, 208, or 230 VAC primary) to a safe \u003cstrong\u003e24 VAC secondary\u003c\/strong\u003e signal that powers the entire low-voltage control circuit — including the thermostat, contactor coil, reversing valve, and control board. When this transformer fails, the entire unit goes silent: no thermostat response, no staging, no call for heat or cool. In multi-stage systems like the PH10JA018000ABAA, a failed or undersized transformer is often misdiagnosed as a board or thermostat fault, making it critical to verify transformer output voltage first during any no-power diagnostic.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 60 VA power rating | Primary: 115\/208\/230 VAC (multi-tap) | Secondary: 24 VAC | 50\/60 Hz | Foot-mount configuration | OEM part number HT01AW229 (supersedes HT01AW229A)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier Factory Authorized Part (FAP). OEM transformers are wound to exact VA and voltage tolerances for the PH10JA018000ABAA's control load. Generic units frequently undersupply VA under full load, causing nuisance board resets and premature contactor coil burnout.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Shut off all power at the disconnect and verify zero voltage with a multimeter before touching any wiring. Note primary tap selection (115V vs 208\/230V) and match to your supply voltage before energizing. Tools needed: multimeter, flathead and Phillips screwdrivers, wire stripper, needle-nose pliers. Photograph all wiring before disconnecting terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty. Ships same business day from our warehouse when ordered before 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Direct OEM replacement for \u003cstrong\u003eCarrier PH10JA018000ABAA\u003c\/strong\u003e packaged heat pump units. Also fits select Bryant and Payne equipment using the same 60VA 115\/208\/230V–24V transformer specification — verify your unit's data plate and existing transformer label before ordering. Questions about fitment? Our HVAC parts team confirms compatibility before you buy — call or chat today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62642032771443,"sku":"CARRIE-PH10JA018000ABAA-TRANSFORMER-HT01AW229","price":190.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62642032804211,"sku":"CARRIE-PH10JA018000ABAA-TRANSFORMER-HT01AW229-GEN","price":167.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-HT01AW229_4dc1ba8c-eee0-4a96-9da3-8c10f1bb81d2.jpg?v=1775016724","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph10ja018000abaa-transformer-h4oyjb","provider":"National HVAC Parts","version":"1.0","type":"link"}