{"product_id":"icp-furnace-control-board-for-rgs243hdaa0aaaa-oem-kit-1183618-ships-today","title":"ICP Furnace Control Board for RGS243HDAA0AAAA – OEM Kit 1183618 | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM control board kit (part number 1183618) is the integrated furnace control (IFC) for the ICP \/ Tempstar \/ Heil RGS243HDAA0AAAA gas furnace. The control board is the brain of the furnace, sequencing the inducer motor, igniter, gas valve, and blower while continuously monitoring safety limits, flame sense, and pressure switches. When this board fails, the furnace will not light, will short-cycle, or will lock out entirely. Symptoms of a failing board include no response to a thermostat call for heat, a furnace that runs the blower but never ignites, erratic LED diagnostic flash codes, or burnt and discolored relays on the board surface. This is a complete kit supplied to factory specification for a direct, reliable 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\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 Furnace Control 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\u003eRGS243HDAA0AAAA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFit Type\u003c\/td\u003e\n\u003ctd\u003eOEM 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\u003eDesigned specifically for the ICP \/ Tempstar \/ Heil RGS243HDAA0AAAA gas furnace. This kit also commonly services related RGS-series furnaces that originally shipped with the 1183618 control. Always confirm your existing board part number 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 furnace switch and breaker; verify zero voltage with a multimeter before touching the board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e – Remove the furnace blower-compartment service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e – Photograph every wire and connector position on the existing board before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e – Unplug the molex harnesses and spade terminals, remove the mounting screws, and lift out the old board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e – Mount the new board, then reconnect each harness and terminal exactly per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e – Restore power, initiate a call for heat, and confirm the full ignition sequence and blower operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFurnace does not respond to a thermostat heat call.\u003c\/li\u003e\n\u003cli\u003eInducer or blower runs but the igniter and gas valve never activate.\u003c\/li\u003e\n\u003cli\u003eRepeated lockouts or erratic diagnostic LED flash codes.\u003c\/li\u003e\n\u003cli\u003eVisible burn marks, scorching, or melted relays on the board.\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":63027291160947,"sku":"1183618","price":219.7,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047525794163,"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_8ef73ed0-d8a7-4be3-8242-13fcc43c52cf.jpg?v=1782888209","url":"https:\/\/nationalhvacparts.com\/products\/icp-furnace-control-board-for-rgs243hdaa0aaaa-oem-kit-1183618-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}