{"product_id":"icp-control-board-kit-for-rhs243h0ba0aaaa-oem-1183618-replacement-ships-today","title":"ICP Control Board Kit for RHS243H0BA0AAAA — OEM 1183618 Replacement | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis is the OEM Control Board Kit (part number 1183618) for the ICP Tempstar Heil RHS243H0BA0AAAA heat pump. The control board is the electronic brain of the outdoor unit — it manages defrost timing, compressor and fan staging, reversing-valve switching, and safety lockouts. When the board fails you'll typically see no-cool\/no-heat conditions, the unit ignoring thermostat calls, erratic defrost cycles, or blinking diagnostic fault codes. This factory kit ships with the correct firmware and connector layout for a true plug-in replacement.\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 Number\u003c\/td\u003e\n\u003ctd\u003e1183618\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eControl Board 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\u003eControl Voltage\u003c\/td\u003e\n\u003ctd\u003e24V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eRHS243H0BA0AAAA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eHeat Pump Outdoor Unit\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 RHS243H0BA0AAAA heat pump. Always confirm your existing board's part number against 1183618 before ordering, as ICP shares chassis families across closely related model suffixes.\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 outdoor unit control-panel access cover.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every wire and connector position before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the wiring harnesses, release the board standoffs\/screws, and lift out the old board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new 1183618 board on the standoffs and reconnect each harness exactly per your photos.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and verify a clean cooling, heating, and defrost cycle with no fault codes.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eUnit will not respond to thermostat calls for heat or cool\u003c\/li\u003e\n\u003cli\u003eFlashing or solid LED diagnostic fault codes on the board\u003c\/li\u003e\n\u003cli\u003eCompressor or outdoor fan fails to start or stage correctly\u003c\/li\u003e\n\u003cli\u003eStuck, missing, or constantly repeating defrost cycles\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\u003cp\u003eShips same day on orders placed 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":63021836960115,"sku":"1183618","price":246.94,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047486177651,"sku":"1183618-GEN","price":189.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-1183618_a2c63e5d-0a48-48f2-8901-bf426c61644f.jpg?v=1782886178","url":"https:\/\/nationalhvacparts.com\/products\/icp-control-board-kit-for-rhs243h0ba0aaaa-oem-1183618-replacement-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}