{"product_id":"icp-40va-transformer-for-rhh102s0aa0aaaa-24v-control-output-ships-today","title":"ICP 40VA Transformer for RHH102S0AA0AAAA — 24V Control Output | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis OEM 24V control transformer supplies low-voltage power to the 24V control circuit of your ICP (International Comfort Products) RHH102S0AA0AAAA heat pump. Rated at 40VA, it steps line voltage down to the 24V secondary that energizes contactors, reversing valve coils, control boards, and the thermostat circuit. When a transformer fails, the entire low-voltage control side goes dead — no thermostat response, no contactor pull-in, and no compressor or fan operation. Replacing it with the correct OEM-rated 40VA unit restores reliable 24V control power. Related OEM control components on this unit include reversing valve coil 1172619 and reversing valve assembly 1175367.\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\u003eReference Part Numbers\u003c\/td\u003e\n\u003ctd\u003e1172619, 1175367\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\u003eICP\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\u003eSecondary Voltage\u003c\/td\u003e\n\u003ctd\u003e24V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eHeat Pump Control Circuit\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 RHH102S0AA0AAAA heat pump and equivalent models sharing the same 24V\/40VA control platform. Always confirm against your unit's wiring diagram and rating plate before installation.\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; 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 — Disconnect the primary and 24V secondary leads, unbolt the transformer from its bracket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new transformer and reconnect primary\/secondary leads exactly per your photo.\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 reading at the secondary terminals\u003c\/li\u003e\n\u003cli\u003eThermostat goes blank or unresponsive\u003c\/li\u003e\n\u003cli\u003eContactor will not pull in on a call for cooling\/heating\u003c\/li\u003e\n\u003cli\u003eVisible burn marks, swelling, or a burnt-electrical smell\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":"Direct Replacement","offer_id":63027262095731,"sku":"1172619-GEN","price":34.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63047951712627,"sku":"1172619","price":45.44,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-transformer-control-1172619_d3bafd3b-bc01-4677-8625-c96e95156e02.jpg?v=1782882432","url":"https:\/\/nationalhvacparts.com\/products\/icp-40va-transformer-for-rhh102s0aa0aaaa-24v-control-output-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}