{"product_id":"icp-furnace-control-board-kit-for-rgs300hdaa0aaaa-integrated-ignition-control-ships-today","title":"ICP Furnace Control Board Kit for RGS300HDAA0AAAA — Integrated Ignition Control | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis OEM integrated furnace control board kit (part #1183618) is the electronic brain of the ICP\/Heil\/Tempstar RGS300HDAA0AAAA gas furnace. It manages the complete ignition sequence — inducer startup, hot surface igniter warm-up, gas valve timing, blower fan control, and continuous flame sensing and safety lockout. The board monitors limit switches and pressure switches and will shut the system down if it detects an unsafe condition. When this board fails, the furnace typically will not fire at all, short-cycles, or runs the blower continuously. It operates on a 24V control circuit and includes the diagnostic LED used to read fault codes.\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 Ignition 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\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\u003eRGS300HDAA0AAAA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiagnostics\u003c\/td\u003e\n\u003ctd\u003eOn-board LED fault codes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eDirectly fits the ICP\/Heil\/Tempstar RGS300HDAA0AAAA gas furnace and shares the same control platform used across many ICP-family RGS series furnaces. Always confirm your existing board's part number and connector layout against 1183618 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, then verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the blower compartment service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every wire harness and connector position before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug all harnesses, remove the mounting screws, and lift out the failed board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new board, then reconnect every harness exactly as photographed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, initiate a heat call, and confirm a full ignition cycle and correct LED status.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFurnace will not ignite or has no response to a heat call\u003c\/li\u003e\n\u003cli\u003eBlower runs constantly or never engages\u003c\/li\u003e\n\u003cli\u003eRapid short-cycling or repeated safety lockouts\u003c\/li\u003e\n\u003cli\u003eError LED flashing fault codes or no LED at all\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":63027283001715,"sku":"1183618","price":245.7,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047567769971,"sku":"1183618-GEN","price":189.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-1183618_5e5921f1-97b2-4308-b7a3-71ffe942e3a1.jpg?v=1782889587","url":"https:\/\/nationalhvacparts.com\/products\/icp-furnace-control-board-kit-for-rgs300hdaa0aaaa-integrated-ignition-control-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}