{"product_id":"tempstar-24v-transformer-for-t4h360gkd200-40va-control-power-ships-today","title":"Tempstar 24V Transformer for T4H360GKD200 — 40VA Control Power | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis 24V control transformer is the OEM low-voltage power source for the Tempstar T4H360GKD200 heat pump system. It steps down line voltage to the 24-volt control circuit that energizes the contactor, defrost board, and reversing valve coil (OEM 1172574 \/ 1175622). Rated at 40VA, it supplies stable control power to every 24V accessory on the unit. When a transformer fails, the entire low-voltage circuit goes dead — the thermostat loses power, the contactor won't pull in, and the system will not start. A buzzing, overheated, or visibly scorched transformer is a sure sign of failure, often caused by a shorted control wire or a stuck contactor coil.\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\u003eOEM Part Numbers\u003c\/td\u003e\n\u003ctd\u003e1172574, 1175622\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\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\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM Direct Replacement\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 T4H360GKD200 heat pump and shared across the ICP\/Heil family of equipment that uses the same 24V control architecture. Always confirm your existing transformer's primary and secondary voltage 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 disconnect and breaker, then verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the control panel access cover.\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 — Unscrew the mounting bracket and disconnect the primary and 24V secondary leads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new transformer, reconnect leads per your photo, and secure the bracket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and confirm 24V across the secondary terminals.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eNo 24V power at the thermostat or control board\u003c\/li\u003e\n\u003cli\u003eContactor and reversing valve fail to energize\u003c\/li\u003e\n\u003cli\u003eAudible buzzing or overheating at the transformer\u003c\/li\u003e\n\u003cli\u003eVisible burn marks, melted housing, or a tripped internal fuse\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":63021790757235,"sku":"1172574-GEN","price":34.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048397586803,"sku":"1172574","price":45.44,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1172574_b5af3303-5ae4-429a-8828-7fd973b4a94c.jpg?v=1782958080","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-24v-transformer-for-t4h360gkd200-40va-control-power-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}