{"product_id":"icp-24v-control-transformer-for-rhs048s0ba0aaaa-40va-class-ii-ships-today","title":"ICP 24V Control Transformer for RHS048S0BA0AAAA — 40VA Class II | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis OEM 24V control transformer package supplies low-voltage power to the control circuit on the ICP Tempstar Heil RHS048S0BA0AAAA heat pump. Rated 40VA with a 24V Class II secondary, it energizes the DPST control relay (P\/N 1178205, T92P7A22-24) and the reversing valve with coil (P\/N 1175367) that switches the system between heating and cooling. When the transformer degrades or opens, the 24V circuit drops out — the thermostat goes unresponsive, the relay won't pull in, and the reversing valve can't shift, leaving the heat pump stuck in one mode or completely dead.\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\u003e1178205, 1175367\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eControl Transformer \/ 24V Circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eICP (Tempstar \/ Heil)\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\u003eSecondary Voltage\u003c\/td\u003e\n\u003ctd\u003e24V Class II\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay\u003c\/td\u003e\n\u003ctd\u003eDPST, 24V (T92P7A22-24)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eEngineered for the ICP \/ Tempstar \/ Heil RHS048S0BA0AAAA heat pump and other RHS048-series units sharing the same low-voltage control package. Confirm your model and part number 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.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the control-panel service cover.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all wiring before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Label and disconnect the primary and 24V secondary leads, then unbolt the failed transformer\/relay.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new component and reconnect each lead 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 reversing-valve operation.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eNo 24V at the control terminals (dead thermostat)\u003c\/li\u003e\n\u003cli\u003eRelay will not pull in or chatters\u003c\/li\u003e\n\u003cli\u003eReversing valve fails to shift between heat and cool\u003c\/li\u003e\n\u003cli\u003eVisible scorching or a blown low-voltage 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":"ICP","offers":[{"title":"OEM","offer_id":63021918978419,"sku":"1178205","price":39.0,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047355924851,"sku":"1178205-GEN","price":30.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1178205.jpg?v=1782881865","url":"https:\/\/nationalhvacparts.com\/products\/icp-24v-control-transformer-for-rhs048s0ba0aaaa-40va-class-ii-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}