{"product_id":"icp-24v-transformer-for-rhh072s0ca0aaaa-40-va-control-circuit-ships-today","title":"ICP 24V Transformer for RHH072S0CA0AAAA — 40 VA Control Circuit | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM 24V control transformer and reversing-valve circuit kit powers the low-voltage controls on the ICP Tempstar Heil RHH072S0CA0AAAA heat pump. It steps line voltage down to a stable 24V, 40 VA control signal feeding the board, contactor coil, and reversing-valve solenoid. A failed transformer kills the entire control circuit — the contactor won't engage, the unit won't start, and the transformer is often found buzzing, overheated, or open. Associated OEM components include reversing-valve coil 1172619 (24V) and DPST relay 1178205 (T92P7A22-24).\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, 1178205\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eControl Transformer \/ 24V Circuit Kit\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\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\u003eReversing Valve Coil\u003c\/td\u003e\n\u003ctd\u003e24V (1172619)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay\u003c\/td\u003e\n\u003ctd\u003e24V DPST T92P7A22-24 (1178205)\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 for the ICP Tempstar Heil RHH072S0CA0AAAA heat pump and other RHH-series condensing units using the same 24V control architecture. Confirm your model and existing part numbers before ordering.\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 breaker and verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the electrical service panel from the condensing unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all wire connections before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Note primary and secondary leads, then disconnect and unmount the failed transformer\/relay.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new transformer, reconnect primary and 24V secondary leads per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and verify 24V at the secondary and proper contactor pull-in.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNo 24V at the control board or contactor coil\u003c\/li\u003e\n\u003cli\u003eUnit completely dead with line voltage present\u003c\/li\u003e\n\u003cli\u003eBuzzing, overheating, or visibly burnt transformer\u003c\/li\u003e\n\u003cli\u003eRepeated control fuse failures\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":63027263275379,"sku":"1172619","price":36.4,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047356055923,"sku":"1172619-GEN","price":28.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1172619_16ea5997-229c-4fab-aa81-f32746b4e451.jpg?v=1782881906","url":"https:\/\/nationalhvacparts.com\/products\/icp-24v-transformer-for-rhh072s0ca0aaaa-40-va-control-circuit-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}