{"product_id":"icp-furnace-control-board-kit-for-rgs120ltcb0aaa-oem-1183618-ships-today","title":"ICP Furnace Control Board Kit for RGS120LTCB0AAA — OEM 1183618 | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis OEM integrated furnace control board kit (part 1183618) is the electronic brain of your ICP, Tempstar, and Heil RGS120LTCB0AAA gas furnace. It manages the entire heating sequence: it reads the thermostat call, energizes the inducer motor, proves the pressure switch, fires the hot surface igniter, opens the gas valve, monitors the flame sensor, and stages the blower on and off. The board also runs continuous safety logic and flashes diagnostic fault codes via its onboard LED. Control boards fail from voltage surges, lightning, overheating, corroded relays, and burned-out traces. When the board goes, the furnace may be completely dead, stuck mid-sequence, short-cycling, or throwing erratic fault codes. This kit is the factory replacement and includes the mounting hardware and connectors needed for a clean swap.\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\u003eOEM Part 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 sequence control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiagnostics\u003c\/td\u003e\n\u003ctd\u003eOnboard LED fault codes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\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 OEM replacement for the ICP \/ Tempstar \/ Heil RGS120LTCB0AAA gas furnace. Part 1183618 is the specified control kit for this model and related ICP-family furnaces — confirm the part number and connector layout against 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 breaker and verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the blower or control compartment panel to expose the board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every plug, wire, and terminal on the old board before disconnecting — this is the most important step.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the wiring harnesses, remove the mounting screws\/standoffs, and lift out the failed board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new board, then transfer each connector exactly as documented. Match the DIP-switch or jumper settings to the original.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and run a full heat cycle; watch the diagnostic LED to confirm a normal sequence 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 unresponsive to a heat call\u003c\/li\u003e\n\u003cli\u003eShort-cycling or stalling partway through the ignition sequence\u003c\/li\u003e\n\u003cli\u003eErratic or persistent diagnostic fault codes\u003c\/li\u003e\n\u003cli\u003eVisible burned relays, scorched traces, or corrosion on the board\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":63027542720883,"sku":"1183618","price":219.7,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047553679731,"sku":"1183618-GEN","price":169.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-1183618_10bbc704-8dbf-448b-9087-88c035c193c4.jpg?v=1782889029","url":"https:\/\/nationalhvacparts.com\/products\/icp-furnace-control-board-kit-for-rgs120ltcb0aaa-oem-1183618-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}