{"product_id":"carrier-py3pna036060ab-transformer-h30291","title":"OEM Carrier Transformer 40VA 208\/240V–24V for PY3PNA036060AB","description":"\u003ch1\u003eOEM Carrier 40VA Control Transformer HT01BD209 for Model PY3PNA036060AB\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier transformer (part #HT01BD209) is the factory-specified replacement for the \u003cstrong\u003eCarrier PY3PNA036060AB\u003c\/strong\u003e HVAC system. The transformer steps down line voltage from 208\/240V to the 24V signal required by your thermostat, control board, and all low-voltage control circuit components. When this transformer fails, the entire control circuit goes dark — you'll see a completely unresponsive thermostat, no call-for-heat or call-for-cooling, and no blower operation. In many cases, a blown fuse on the transformer or a shorted secondary winding is the culprit before the unit ever trips a high-limit or safety switch.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Input voltage: 208\/240V | Output voltage: 24V | Power rating: 40VA | Frequency: 50\/60 Hz | Factory-matched OEM dimensions and mounting footprint\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM transformers are wound to exact VA and impedance tolerances. Undersized or off-tolerance generic transformers can overheat, blow control fuses repeatedly, or fail to sustain 24V under full relay load — causing nuisance lockouts and premature board failures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power at the breaker and verify zero voltage before disconnecting wiring. Tools needed: flathead and Phillips screwdrivers, multimeter, wire labels or smartphone for wiring photo. Reconnect all low-voltage leads exactly as removed. Always check for a shorted thermostat wire that may have caused the original failure.\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 \u003cstrong\u003eCarrier model PY3PNA036060AB\u003c\/strong\u003e. Verify input voltage (208\/240V) and VA rating (40VA) match your unit's data plate before ordering. Have a question about fitment? Our HVAC parts specialists verify compatibility before you buy — contact us today.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640391553395,"sku":"CARRIE-PY3PNA036060AB-TRANSFORMER-HT01BD209","price":47.25,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640391586163,"sku":"CARRIE-PY3PNA036060AB-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_8e573060-9b57-48e9-8b60-6ebaa7b06de2.jpg?v=1782942396","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py3pna036060ab-transformer-h30291","provider":"National HVAC Parts","version":"1.0","type":"link"}