{"product_id":"icp-furnace-control-board-kit-for-rgs300lrfa0aaaa-oem-replacement-ships-today","title":"ICP Furnace Control Board Kit for RGS300LRFA0AAAA — OEM Replacement | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis genuine OEM control board kit (part #1183618) is the integrated furnace control (IFC) — the brain of your ICP \/ Tempstar \/ Heil RGS300LRFA0AAAA furnace. It sequences the entire heating cycle: it powers the inducer, proves the pressure switch, energizes the igniter, opens the gas valve, monitors the flame sensor, and times the blower on and off. It also runs onboard safety lockouts and flashes diagnostic fault codes via its LED. When the board fails — usually from surges, cracked relays, or burned traces — you get intermittent no-heat, a furnace that won't start, blower problems, or erratic short cycling. Supplied as a complete kit for a clean OEM replacement.\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e120V \/ 24V control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFeatures\u003c\/td\u003e\n\u003ctd\u003eIgnition control, blower timing, LED diagnostics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eDirect OEM fit for ICP \/ Tempstar \/ Heil \/ Comfortmaker model RGS300LRFA0AAAA and related RGS300 series furnaces. Match the part number and connector layout to your existing board before installing.\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 control\/blower compartment service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photo every connector and wire harness location before unplugging anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the harnesses and remove the mounting screws; 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 to its matching plug per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, call for heat, and verify a full ignition and blower cycle with no fault codes.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFurnace completely dead with no LED activity\u003c\/li\u003e\n\u003cli\u003eIntermittent no-heat or random short cycling\u003c\/li\u003e\n\u003cli\u003eBlower won't start or won't shut off\u003c\/li\u003e\n\u003cli\u003eVisible burned relays, scorch marks, or error codes\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":63027279135091,"sku":"1183618","price":246.94,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047568851315,"sku":"1183618-GEN","price":189.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-1183618_2b959dc0-be5a-4562-ba09-fd66f3928f55.jpg?v=1782889627","url":"https:\/\/nationalhvacparts.com\/products\/icp-furnace-control-board-kit-for-rgs300lrfa0aaaa-oem-replacement-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}