{"product_id":"tempstar-40va-transformer-for-teb15r34rta-277v-to-24v-ships-today","title":"Tempstar 40VA Transformer for TEB15R34RTA — 277V to 24V | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis OEM 40VA control transformer (Part No. 1091226) steps 277-volt line power down to 24 volts to power the low-voltage control circuit of the Tempstar TEB15R34RTA packaged terminal air conditioner. The combo also includes the unit's 24V relays — a standard SPST relay (Part No. 1053004) and a 24V DPST relay (Part No. 1060940) — that the transformer energizes. If the transformer fails, the entire 24V control circuit goes dead: the thermostat, relays, and contactors lose power and the unit will not run. A 40VA transformer supplies ample capacity for the relays and controls in this PTAC.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\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\u003ePart Numbers\u003c\/td\u003e\n\u003ctd\u003e1091226 (Transformer), 1053004 (Relay 24V), 1060940 (Relay 24V DPST)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eControl Transformer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTempstar \/ Heil \/ ICP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRating\u003c\/td\u003e\n\u003ctd\u003e40 VA\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\u003eFit\u003c\/td\u003e\n\u003ctd\u003eOEM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eEngineered for the Tempstar TEB15R34RTA PTAC and related ICP\/Heil\/Tempstar 277V units calling for transformer 1091226 and relays 1053004 \/ 1060940. Confirm primary voltage (277V) and part numbers against your unit before ordering.\u003c\/p\u003e\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power at the breaker and verify zero voltage with a multimeter — note this is a 277V primary.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the PTAC front cover and control-box service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all primary and secondary leads before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Disconnect the 277V primary and 24V secondary wires, then unbolt the old transformer from its bracket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new transformer, land the 277V primary and 24V secondary per your photo, and seat the relays.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and confirm 24V at the secondary and proper relay operation on a thermostat call.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eNo 24V at the secondary — entire control circuit dead.\u003c\/li\u003e\n\u003cli\u003eThermostat and relays unresponsive with line power present.\u003c\/li\u003e\n\u003cli\u003eBurnt smell, scorching, or a melted transformer housing.\u003c\/li\u003e\n\u003cli\u003eRepeated control-fuse blowing caused by a shorted transformer.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\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":63021642449267,"sku":"1053004-GEN","price":38.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048412103027,"sku":"1053004","price":50.64,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1053004_f0a9c3bb-0faf-4183-ae92-9f0dae932d12.jpg?v=1782958581","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-40va-transformer-for-teb15r34rta-277v-to-24v-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}