{"product_id":"icp-furnace-control-board-kit-for-rgs303staa0aaaa-oem-1183618-integrated-control-ships-today","title":"ICP Furnace Control Board Kit for RGS303STAA0AAAA – OEM 1183618 Integrated Control | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis genuine OEM control board kit, factory part number 1183618, is the integrated furnace control (IFC) that sequences and supervises operation of ICP, Tempstar, Heil, and Comfortmaker gas furnaces such as the RGS303STAA0AAAA. The board manages the inducer, igniter, gas valve, blower timing, and safety circuits, and reads the thermostat call along with limit and flame-sense inputs. Supplied as a complete kit, it includes the board ready for installation. Boards fail from voltage surges, cracked solder joints, burned relays, or moisture — producing no-heat conditions, blinking diagnostic LED fault codes, or a furnace stuck in lockout. A new IFC restores full, code-compliant operation.\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 \/ Comfortmaker\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eGas Furnace Sequencing \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\u003eDirect factory replacement for ICP\/Tempstar\/Heil\/Comfortmaker gas furnaces using OEM control board kit 1183618, including the RGS303STAA0AAAA. Verify the board part number and connector layout against your original before installing.\u003c\/p\u003e\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e – Disconnect electrical power and shut off gas, then verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e – Remove the furnace control\/blower compartment service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e – Photograph every harness connector and wire location before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e – Unplug each connector, remove the mounting screws\/standoffs, and lift out the old board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e – Mount the new board and reconnect each harness to its matching plug per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e – Restore gas and power, run a full heat cycle, and confirm the diagnostic LED shows normal operation.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eNo response to a thermostat heat call\u003c\/li\u003e\n\u003cli\u003eBlinking LED fault\/error codes on the board\u003c\/li\u003e\n\u003cli\u003eVisible burn marks, corrosion, or scorched relays\u003c\/li\u003e\n\u003cli\u003eInducer, igniter, or blower fails to sequence correctly\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":63027270353267,"sku":"1183618","price":233.94,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047570325875,"sku":"1183618-GEN","price":179.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-1183618_b94d179a-66c2-4c3e-95ea-7d440f0dd26b.jpg?v=1782889736","url":"https:\/\/nationalhvacparts.com\/products\/icp-furnace-control-board-kit-for-rgs303staa0aaaa-oem-1183618-integrated-control-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}