{"product_id":"icp-furnace-control-board-kit-for-rgs303ltaa0aaaa-oem-ships-today","title":"ICP Furnace Control Board Kit for RGS303LTAA0AAAA — OEM | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis is a genuine OEM control board kit (part number 1183618) for the ICP\/Heil\/Tempstar RGS303LTAA0AAAA gas furnace. The integrated furnace control board is the brain of the unit — it sequences ignition, manages the inducer and blower motors, monitors safety switches and flame sense, and runs the diagnostic LED fault codes. When the board fails you may see no response on a heat call, the inducer or blower running constantly, erratic blower behavior, blank or flashing fault codes, or intermittent no-heat lockouts. Supplied as a complete kit, this assembly drops in to replace the original control and restores correct, safe sequencing of the entire heating cycle. Because the board ties together every major component, using the correct OEM kit is critical for reliable operation and proper safety interlocks.\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\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 \/ Heil \/ Tempstar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eIgnition \/ Blower \/ Inducer Control \u0026amp; Diagnostics\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\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eRGS303LTAA0AAAA\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 for the ICP\/Heil\/Tempstar\/Comfortmaker RGS303LTAA0AAAA gas furnace and other ICP-family units specifying control kit 1183618. Confirm connector layout and harness plugs match your existing board before installing.\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 electrical power and shut off the gas, then verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the furnace control\/blower panel to expose the board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every harness plug and wire position before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug each connector, release the mounting standoffs\/screws, and lift out the old board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new board, reseat every connector firmly per your photo, and confirm none are reversed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and gas, run a full heat cycle, and verify ignition, blower, and fault-code LED operate normally.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNo response from the furnace on a thermostat heat call.\u003c\/li\u003e\n\u003cli\u003eInducer or blower motor runs constantly or won't start.\u003c\/li\u003e\n\u003cli\u003eBlank, frozen, or erratic diagnostic LED fault codes.\u003c\/li\u003e\n\u003cli\u003eIntermittent no-heat lockouts that clear on a reset.\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":63027272515955,"sku":"1183618","price":246.94,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047569932659,"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_451b6a3a-5695-4b46-992c-06be74e0df65.jpg?v=1782889707","url":"https:\/\/nationalhvacparts.com\/products\/icp-furnace-control-board-kit-for-rgs303ltaa0aaaa-oem-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}