{"product_id":"icp-furnace-control-board-kit-for-rgs121htca0aaa-oem-integrated-control-ships-today","title":"ICP Furnace Control Board Kit for RGS121HTCA0AAA — OEM Integrated Control | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis genuine OEM control board kit (part 1183618) is the integrated furnace control for the ICP \/ Tempstar \/ Heil RGS121HTCA0AAA gas furnace. The board is the brain of the furnace: it manages the ignition sequence, sequences the inducer and blower motors, monitors the pressure switch and limit safeties, and times the hot surface igniter and gas valve. When the control board fails the furnace may stop responding to thermostat calls, run the blower continuously, lock out on a false safety fault, or fail to ignite even though the igniter and gas valve are good. The kit ships with the board and the hardware needed for a direct replacement.\u003c\/p\u003e\n\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 \/ Tempstar \/ Heil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLine Voltage\u003c\/td\u003e\n\u003ctd\u003e120 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM Direct Replacement Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eDirect-fit replacement for the ICP \/ Tempstar \/ Heil RGS121HTCA0AAA furnace and shared-platform Comfortmaker, Arcoaire, Carrier and Bryant furnaces that use this integrated control. Always match the part number printed on your existing board, as control boards are firmware- and connector-specific.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect furnace power at the breaker and 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 panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every wire harness and terminal on the old board before unplugging anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug each harness, release the board's mounting standoffs or screws, and remove the old control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new board, transfer each harness to the identical terminal per your photo, and confirm jumper\/dip settings match.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, call for heat, and watch a full ignition cycle plus the diagnostic LED to confirm normal operation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFurnace does not respond to thermostat calls for heat.\u003c\/li\u003e\n\u003cli\u003eDiagnostic LED flashes a hard-fault or control-failure code.\u003c\/li\u003e\n\u003cli\u003eBlower runs continuously or cycles erratically.\u003c\/li\u003e\n\u003cli\u003eNo ignition sequence even though igniter and gas valve test good.\u003c\/li\u003e\n\u003c\/ul\u003e\n\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":63027505398131,"sku":"1183618","price":246.94,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047555252595,"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_d492685f-638b-483d-b7e6-7c32c94333e0.jpg?v=1782889091","url":"https:\/\/nationalhvacparts.com\/products\/icp-furnace-control-board-kit-for-rgs121htca0aaa-oem-integrated-control-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}