{"product_id":"icp-furnace-control-board-kit-for-rgs120ldaa0aaa-oem-replacement-ships-today","title":"ICP Furnace Control Board Kit for RGS120LDAA0AAA — OEM Replacement | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM control board kit (ICP part #1183618) is the integrated furnace control (IFC) — the brain of your ICP \/ Heil \/ Tempstar RGS120LDAA0AAA gas furnace. It manages the entire heating sequence: it powers the draft inducer, energizes the hot surface igniter, opens the gas valve, monitors the flame sensor, and times the blower on and off. It also coordinates safety lockouts and reads pressure-switch and limit inputs. When the board fails, symptoms range from a completely dead furnace to erratic behavior — short cycling, blower that won't start or won't shut off, no ignition sequence, or fault codes flashing on the diagnostic LED. The kit ships with the board and required mounting hardware for a clean OEM replacement.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\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 (Heil \/ Tempstar)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eIgnition, blower, and safety sequencing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eGas Furnace\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eDirect OEM fit for the ICP \/ Heil \/ Tempstar RGS120LDAA0AAA gas furnace. Because integrated furnace controls are model-specific in their relay logic and connector layout, always match part #1183618 to your existing board and compare the connector pinout before wiring.\u003c\/p\u003e\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect electrical power and shut off gas; verify zero voltage at the board with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the furnace control-compartment door.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every harness connector and terminal before unplugging — this is the single most important step.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug all connectors, remove the mounting screws, and lift out the old board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new board with the supplied hardware and reconnect each harness exactly per your photos.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and gas, call for heat, and verify the full sequence: inducer, igniter, gas valve, flame, and blower.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFurnace completely dead with no diagnostic LED activity\u003c\/li\u003e\n\u003cli\u003eNo ignition sequence despite a thermostat call for heat\u003c\/li\u003e\n\u003cli\u003eBlower runs constantly or fails to start\u003c\/li\u003e\n\u003cli\u003eErratic short cycling or fault codes pointing to the control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\n\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":63027564118387,"sku":"1183618","price":214.44,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047552139635,"sku":"1183618-GEN","price":164.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-1183618_e36ab2f7-e4fb-4df3-8fb2-15eab553b81c.jpg?v=1782888970","url":"https:\/\/nationalhvacparts.com\/products\/icp-furnace-control-board-kit-for-rgs120ldaa0aaa-oem-replacement-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}