{"product_id":"icp-integrated-furnace-control-board-for-rgs090stcb0aaa-part-1183618-ships-today","title":"ICP Integrated Furnace Control Board for RGS090STCB0AAA — Part 1183618 | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis is the genuine OEM integrated furnace control board (kit) for the ICP \/ Tempstar \/ Heil RGS090STCB0AAA 90,000 BTU gas furnace, supplied as factory part number 1183618. The control board is the electronic brain of the furnace: it sequences the ignition cycle, monitors the flame sensor and pressure switch, energizes the inducer and gas valve, controls the blower fan timing, and manages safety lockouts. When this board fails the furnace may stop responding to the thermostat entirely, flash a fault\/error code at the diagnostic LED, short-cycle, or fail to ignite. The 1183618 kit ships with the board and mounting hardware so you can drop in a complete 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 (KIT CONTROL BOARD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eIntegrated furnace control board\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\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eRGS090STCB0AAA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLine Voltage\u003c\/td\u003e\n\u003ctd\u003e120V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Voltage\u003c\/td\u003e\n\u003ctd\u003e24V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eDesigned as the factory-correct control board for the ICP\/Tempstar\/Heil RGS090STCB0AAA gas furnace. Always confirm your existing board's part number and connector layout against 1183618 before ordering. The board is shared across several RGS-series 90K BTU furnace builds, but matching the OEM number guarantees connector and firmware compatibility.\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 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 blower-compartment service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every wire harness and connector on the existing board before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug each labeled connector, release the board standoffs\/screws, and lift out the failed board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new 1183618 board, reconnect each harness exactly per your photos, and confirm the ground.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, call for heat, and watch the diagnostic LED through a full ignition and blower cycle.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFurnace completely unresponsive to thermostat calls for heat.\u003c\/li\u003e\n\u003cli\u003eDiagnostic LED flashing a hard-lockout or board fault code.\u003c\/li\u003e\n\u003cli\u003eInducer, igniter, or blower failing to energize in the correct sequence.\u003c\/li\u003e\n\u003cli\u003eVisible scorch marks, corroded relays, or burnt traces on the board.\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":63027680772467,"sku":"1183618","price":193.7,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047701528947,"sku":"1183618-GEN","price":149.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-1183618_38242799-ce2c-4b1a-ab00-52cfffedd5e7.jpg?v=1782894848","url":"https:\/\/nationalhvacparts.com\/products\/icp-integrated-furnace-control-board-for-rgs090stcb0aaa-part-1183618-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}