{"product_id":"tempstar-40va-transformer-208-230v-to-24v-for-tch924gka200-oem-1170676-ships-today","title":"Tempstar 40VA Transformer 208\/230V to 24V for TCH924GKA200 — OEM 1170676 | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis Tempstar 40VA control transformer (OEM part 1170676) steps the unit's 208\/230V line voltage down to the 24V needed to power the thermostat, contactor coil, reversing-valve solenoid, and safety circuits. Rated at 40 volt-amps, it supplies adequate inrush current for the control loads on this heat pump chassis. A failed transformer produces a completely dead control circuit — no thermostat display, no contactor pull-in, and no call for cooling or heating. Failures are usually caused by a shorted low-voltage wire, a stuck contactor coil, or age-related winding breakdown.\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 Number\u003c\/td\u003e\n\u003ctd\u003e1170676\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\u003eRating\u003c\/td\u003e\n\u003ctd\u003e40 VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary\u003c\/td\u003e\n\u003ctd\u003e208\/230V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSecondary\u003c\/td\u003e\n\u003ctd\u003e24V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTempstar \/ ICP \/ Heil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eDirect OEM replacement for Tempstar model TCH924GKA200 and related ICP\/Heil\/Comfortmaker heat pump units. This listing also relates to companion control parts on the same model, including reversing valve coil (1172574) and reversing valve with coil assembly (1175621); order those separately if needed. Verify your VA rating and voltage taps before installing.\u003c\/p\u003e\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power and verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the unit service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the primary and secondary wiring before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Confirm the correct primary tap for your supply voltage, disconnect all leads, and unbolt the transformer from the control bracket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new transformer, land the primary on the matching voltage tap, and reconnect the 24V secondary per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and confirm 24V at the secondary and proper contactor\/thermostat operation.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDead thermostat and no low-voltage anywhere in the system\u003c\/li\u003e\n\u003cli\u003eNo 24V reading across the secondary terminals\u003c\/li\u003e\n\u003cli\u003eBurnt smell or visibly charred transformer windings\u003c\/li\u003e\n\u003cli\u003eRepeated transformer failure pointing to a shorted control wire\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":63021651329395,"sku":"1172574-GEN","price":34.0,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048401518963,"sku":"1172574","price":44.2,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1172574_697edb84-ef38-4cff-b906-eeb64b4f8a86.jpg?v=1782958201","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-40va-transformer-208-230v-to-24v-for-tch924gka200-oem-1170676-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}