{"product_id":"tempstar-40va-transformer-for-teb07r34rta-277v-to-24v-ptac-control-ships-today","title":"Tempstar 40VA Transformer for TEB07R34RTA — 277V to 24V PTAC Control | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM 40VA control transformer steps 277V line power down to the 24V signal required by the low-voltage control circuit on your Tempstar TEB07R34RTA PTAC unit. The transformer powers thermostats, relays, and contactor coils throughout the system. When it fails, the entire 24V control side goes dead — the blower won't energize, the compressor contactor won't pull in, and the thermostat display may go blank even though 277V line power is present. A buzzing, scorched, or open-winding transformer is one of the most common no-response failures on packaged PTAC equipment. This assembly is supplied with the matching OEM 24V relays (1053004 SPST and 1060940 DPST) that share the control circuit.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Part Number\u003c\/td\u003e\n\u003ctd\u003e1091226 (transformer), 1053004 \/ 1060940 (relays)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eStep-Down Control Transformer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTempstar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary Voltage\u003c\/td\u003e\n\u003ctd\u003e277V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary Voltage\u003c\/td\u003e\n\u003ctd\u003e24V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRating\u003c\/td\u003e\n\u003ctd\u003e40VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eEngineered as a direct OEM fit for the Tempstar TEB07R34RTA PTAC and equivalent Heil\/ICP-built packaged terminal units sharing the 277V control architecture. Confirm your unit's primary voltage and VA rating against the data plate before ordering.\u003c\/p\u003e\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power at the breaker and verify zero voltage with a multimeter on both the 277V and 24V terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the front service panel to expose the control box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all primary and secondary wire connections before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Disconnect the line and load leads, unbolt the transformer from the bracket, and lift it out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new transformer, reconnect primary (277V) and secondary (24V) leads exactly per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and verify 24V across the secondary and proper control-circuit operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNo 24V output measured at the secondary terminals\u003c\/li\u003e\n\u003cli\u003eBlower, contactor, or thermostat completely unresponsive with line power present\u003c\/li\u003e\n\u003cli\u003eVisible scorching, melted potting, or a burnt smell at the transformer\u003c\/li\u003e\n\u003cli\u003eAudible buzzing or repeated control-fuse blowing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\n\u003cp\u003eShips same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"Tempstar","offers":[{"title":"Direct Replacement","offer_id":63021644874099,"sku":"1053004-GEN","price":34.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048411152755,"sku":"1053004","price":45.44,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1053004_0f926fef-9eb1-40fa-b9a6-2dd5f0e9f097.jpg?v=1782958548","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-40va-transformer-for-teb07r34rta-277v-to-24v-ptac-control-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}