{"product_id":"icp-control-board-for-rhh090s0ca0aaaa-oem-1183618-replacement-kit-ships-today","title":"ICP Control Board for RHH090S0CA0AAAA — OEM 1183618 Replacement Kit | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis is the genuine OEM control board kit (part number 1183618) for the ICP \/ Heil \/ Tempstar RHH090S0CA0AAAA heat pump. The control board governs defrost timing, reversing valve switching, compressor sequencing, outdoor fan operation, and safety lockouts. A failed board can leave the unit unresponsive to the thermostat, unable to switch between heating and cooling, stuck in defrost, or short-cycling the compressor. Replacing it with a factory-matched board restores correct control logic and protects the compressor from harmful sequencing.\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\u003eIntegrated Control Board Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eICP \/ Heil \/ Tempstar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eRHH090S0CA0AAAA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eHeat Pump\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM Direct Replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eEngineered as a direct-fit replacement for the ICP RHH090S0CA0AAAA heat pump and related Heil, Tempstar, and Comfortmaker units that originally shipped with control board 1183618. Verify your existing board part number 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, then verify zero voltage with a multimeter at the board terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the control panel service cover to expose the board.\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 harnesses, release the board standoffs\/screws, and lift out the old board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Seat the new 1183618 board and reconnect each harness exactly per your photos.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and confirm correct heating, cooling, defrost, and reversing-valve operation.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eUnit ignores thermostat heat or cool calls entirely\u003c\/li\u003e\n\u003cli\u003eSystem fails to switch between heating and cooling modes\u003c\/li\u003e\n\u003cli\u003eStuck in or never enters defrost during cold weather\u003c\/li\u003e\n\u003cli\u003eVisible burnt traces, relay damage, or scorch marks on the board\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":63027262685555,"sku":"1183618","price":219.7,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047464616307,"sku":"1183618-GEN","price":169.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-1183618_39842dad-4cba-4c22-9050-a80ff1b5a400.jpg?v=1782885390","url":"https:\/\/nationalhvacparts.com\/products\/icp-control-board-for-rhh090s0ca0aaaa-oem-1183618-replacement-kit-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}