{"product_id":"icp-furnace-control-board-kit-for-rgs300staa0aaaa-oem-1183618-ships-today","title":"ICP Furnace Control Board Kit for RGS300STAA0AAAA — OEM 1183618 | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis is the genuine OEM control board kit, ICP part number 1183618, for the RGS300STAA0AAAA gas furnace. The integrated furnace control board is the brain of the system: it manages the ignition sequence, sequences the inducer and blower, monitors safety circuits (limit switches, flame sense, pressure switch), and times the heat and cool cycles. As a kit, 1183618 typically includes the board plus the mounting hardware and harness\/adapter needed for a complete replacement. Control boards fail from voltage surges, heat stress, cracked solder joints, failed relays on the board, and burned terminals. Symptoms of a failing board include no response on a call for heat, blower or inducer that won't start or won't stop, repeated ignition lockouts, and erratic fault-code flashing on the diagnostic LED. Replacing the board restores correct, safe sequencing of the entire furnace.\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\u003eIncludes\u003c\/td\u003e\n\u003ctd\u003eControl board + mounting\/harness kit\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 fit for ICP \/ Tempstar \/ Heil \/ Comfortmaker model RGS300STAA0AAAA and related furnaces that specify control board kit 1183618. Verify the part number printed on your existing board before ordering, as control boards are model-specific.\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 furnace control\/blower-compartment service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every wire harness and terminal on the existing board before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug each harness, release any low-voltage screw terminals, and unfasten the old board from its standoffs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new board using the included hardware and reconnect every harness exactly per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, run heat and cool cycles, and confirm correct sequencing with no fault-code flashes on the diagnostic LED.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eNo response from the furnace on a call for heat\u003c\/li\u003e\n\u003cli\u003eBlower or inducer won't start, or won't shut off\u003c\/li\u003e\n\u003cli\u003eRepeated ignition lockouts with no other failed component\u003c\/li\u003e\n\u003cli\u003eBurned terminals, scorch marks, or erratic diagnostic LED codes\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 on unused parts. Backed by the National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"ICP","offers":[{"title":"OEM","offer_id":63027276841331,"sku":"1183618","price":188.44,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047569277299,"sku":"1183618-GEN","price":144.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-1183618_6e7c6ae1-0db3-4996-b3ac-ccd1987746d4.jpg?v=1782889660","url":"https:\/\/nationalhvacparts.com\/products\/icp-furnace-control-board-kit-for-rgs300staa0aaaa-oem-1183618-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}