{"product_id":"carrier-py1pjb048115aaaa-transformer-h30291","title":"OEM Carrier Transformer 40VA 208\/240V–24V for PY1PJB048115AAAA","description":"\u003ch1\u003eOEM Carrier Control Transformer 40VA 208\/240V to 24V — Model PY1PJB048115AAAA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part #HT01BD209) is the factory-specified control voltage transformer for the \u003cstrong\u003eCarrier PY1PJB048115AAAA\u003c\/strong\u003e packaged unit. Its job is to step down the high-voltage supply power (208\/240V) to the 24V AC signal that drives every control circuit in the system — thermostat, contactor coils, gas valve, and safety limits. When this transformer fails, the entire control circuit goes dead: your thermostat goes blank, the system refuses to start in any mode, and no 24V is measurable at the control board terminals.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e 208\/240V primary input | 24V secondary output | 40VA power rating | 50\/60 Hz | Factory-matched OEM unit — part #HT01BD209\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e The OEM transformer is wound to exact VA tolerance and insulation class for the PY1PJB048115AAAA's load requirements. Generic units may underperform under simultaneous multi-relay switching, causing nuisance voltage sags and intermittent lockouts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power and verify 0V at the transformer terminals with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, multimeter, needle-nose pliers, wire nuts. Photograph or label all wire connections before removal.\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 a direct OEM replacement for the \u003cstrong\u003eCarrier PY1PJB048115AAAA\u003c\/strong\u003e packaged unit. Confirm 208\/240V supply voltage on your unit's data plate before ordering. Need fitment verification? Our HVAC parts team confirms compatibility before you buy — order with confidence today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641013326195,"sku":"CARRIE-PY1PJB048115AAAA-TRANSFORMER-HT01BD209","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641013358963,"sku":"CARRIE-PY1PJB048115AAAA-TRANSFORMER-HT01BD209-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-HT01BD209_642d69f3-ac26-4923-a66c-b50ee5def13e.jpg?v=1782942244","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py1pjb048115aaaa-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}