{"product_id":"icp-furnace-control-board-for-rgs243sffa0aaaa-oem-integrated-ignition-board-kit-ships-today","title":"ICP Furnace Control Board for RGS243SFFA0AAAA — OEM Integrated Ignition Board Kit | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis OEM control board kit is the brain of the ICP\/Tempstar\/Heil RGS243SFFA0AAAA gas furnace. It manages the ignition sequence, blower and inducer timing, safety interlocks (pressure switch, limit, flame sense), and diagnostic fault codes. When the board fails, the furnace may be completely dead, fail to ignite, short-cycle, or flash error codes. OEM part number 1183618 (KIT CONTROL BOARD) is supplied as a complete kit for a correct, reliable replacement that preserves factory timing and safety logic.\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 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\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eIgnition, Blower \u0026amp; Safety Control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFit\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\u003eDesigned as a direct-fit replacement for the ICP \/ Tempstar \/ Heil RGS243SFFA0AAAA gas furnace and related RGS243 series furnaces specifying control board kit 1183618. Verify your model and existing board part number before ordering.\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 furnace switch and breaker. Verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the blower\/control compartment service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every wire and connector on the old board before disconnecting — terminal placement is critical.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug all connectors, remove the board mounting screws, and lift out the old control board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new board, then reconnect each harness exactly per your photos. Confirm no pins are bent or mis-seated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, run a full heat cycle, and verify the diagnostic LED shows a normal status with proper ignition and blower operation.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFurnace completely unresponsive with power confirmed at the board\u003c\/li\u003e\n\u003cli\u003eNo ignition sequence or inducer\/blower fails to start\u003c\/li\u003e\n\u003cli\u003eShort-cycling or random shutdowns\u003c\/li\u003e\n\u003cli\u003eDiagnostic LED flashing a control\/hardware fault code\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":"OEM","offer_id":63027285786995,"sku":"1183618","price":240.44,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047526515059,"sku":"1183618-GEN","price":184.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-1183618_af6092b5-84e9-45cd-a4e8-5d886e820527.jpg?v=1782888240","url":"https:\/\/nationalhvacparts.com\/products\/icp-furnace-control-board-for-rgs243sffa0aaaa-oem-integrated-ignition-board-kit-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}