{"product_id":"icp-transformer-for-rhs183h0ba0aaaa-24v-40va-control-ships-today","title":"ICP Transformer for RHS183H0BA0AAAA — 24V 40VA Control | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM 24V transformer and control package powers the low-voltage circuit of your ICP RHS183H0BA0AAAA heat pump. The 40VA transformer converts line voltage to the 24V used by the thermostat, contactor coils, and reversing valve. The kit includes the reversing-valve coil (part 1172619) plus the DPDT (1183814) and DPST (1178205) relays that switch the system between heating and cooling. If the transformer shorts or burns open, the whole control circuit dies — the thermostat call never reaches the outdoor unit and nothing starts. A buzzing transformer, a repeatedly blown low-voltage fuse, or scorched secondary wiring all point to a failed component that needs replacement.\u003c\/p\u003e\n\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 Numbers\u003c\/td\u003e\n\u003ctd\u003e1172619, 1183814, 1178205\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eControl Transformer + Relay Set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eICP \/ Heil \/ Tempstar \/ Comfortmaker\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\u003e40 VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelays\u003c\/td\u003e\n\u003ctd\u003eDPDT (T92S11A22-24), DPST (T92P7A22-24)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReversing Valve Coil\u003c\/td\u003e\n\u003ctd\u003e24V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFit\u003c\/td\u003e\n\u003ctd\u003eDirect OEM Replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eEngineered as a direct replacement for the ICP RHS183H0BA0AAAA heat pump and the shared ICP-built systems sold under the Heil, Tempstar, and Comfortmaker labels using these same 24V control components. Confirm the part numbers on your original transformer and relays before installing.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power at the disconnect and breaker, then verify zero voltage at the contactor terminals with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the control-panel service cover on the outdoor unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every low-voltage wire and terminal before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Label and disconnect the primary and secondary leads, unscrew the transformer bracket, and unplug the relay sockets and reversing-valve coil connector.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new transformer, seat the relays, connect the reversing-valve coil, and reconnect each wire exactly per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, confirm 24V at the secondary, and verify the contactor pulls in on a thermostat call.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSystem completely dead with no response to a thermostat call\u003c\/li\u003e\n\u003cli\u003eRepeatedly blown 3-amp low-voltage fuse\u003c\/li\u003e\n\u003cli\u003eAudible buzzing or burning smell from the control box\u003c\/li\u003e\n\u003cli\u003eHeat pump fails to switch between heating and cooling\u003c\/li\u003e\n\u003c\/ul\u003e\n\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":"ICP","offers":[{"title":"OEM","offer_id":63021840925043,"sku":"1172619","price":41.6,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047727710579,"sku":"1172619-GEN","price":32.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1172619_20f4da80-13c7-45de-ab98-75e209bca12a.jpg?v=1782896146","url":"https:\/\/nationalhvacparts.com\/products\/icp-transformer-for-rhs183h0ba0aaaa-24v-40va-control-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}