{"product_id":"icp-furnace-control-board-kit-for-rgs120ltab0aaa-integrated-ignition-control-ships-today","title":"ICP Furnace Control Board Kit for RGS120LTAB0AAA — Integrated Ignition Control | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM control board kit (part #1183618) is the brain of the ICP Tempstar\/Heil RGS120LTAB0AAA gas furnace. The integrated furnace control manages the full heat sequence — inducer startup, igniter warm-up, gas valve timing, flame sensing, and blower on\/off delays — while monitoring safety limits and pressure switches. A failed board produces erratic or dead behavior: no response on a call for heat, the blower running constantly, intermittent lockouts, or a furnace that ignites but never starts the blower. Supplied as a complete kit with the correct board revision and mounting hardware so it drops into the original control bracket.\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 \/ Tempstar \/ Heil\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\u003eLine Voltage\u003c\/td\u003e\n\u003ctd\u003e120V\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\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eDesigned for the ICP Tempstar\/Heil RGS120LTAB0AAA furnace and other ICP-family models that specify control kit 1183618. Verify the kit number against your unit's wiring diagram before installing.\u003c\/p\u003e\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power at the switch and breaker and shut off the gas. Verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the furnace control\/service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every wire and terminal on the old board before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Label and unplug each connector, then remove the board mounting screws.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new board, transfer wiring one connection at a time per your photo, and set any onboard dip switches to match the original.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore gas and power, run a full heat cycle, and confirm correct ignition, flame sensing, and blower timing. Check the diagnostic LED for fault codes.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNo response from the furnace on a call for heat\u003c\/li\u003e\n\u003cli\u003eBlower runs continuously or never engages\u003c\/li\u003e\n\u003cli\u003eIntermittent lockouts or random short-cycling\u003c\/li\u003e\n\u003cli\u003eDiagnostic LED dark or flashing a hard-fault code\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":63027543245171,"sku":"1183618","price":218.4,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047553483123,"sku":"1183618-GEN","price":168.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-1183618_d25620f0-b8c1-437d-af69-fd621bf63208.jpg?v=1782889022","url":"https:\/\/nationalhvacparts.com\/products\/icp-furnace-control-board-kit-for-rgs120ltab0aaa-integrated-ignition-control-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}