{"product_id":"icp-furnace-control-board-kit-for-rgs303sfaa0aaaa-oem-ships-today","title":"ICP Furnace Control Board Kit for RGS303SFAA0AAAA — OEM | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM control board kit (ICP part #1183618) is the integrated furnace control (IFC) that manages your RGS303SFAA0AAAA system's entire heating sequence — ignition timing, gas valve and inducer operation, blower fan on\/off delays, safety interlocks, and diagnostic fault codes. The board reads inputs from the thermostat, pressure switch, limit switches, and flame sensor, then sequences each component safely. When a control board fails you may see a completely dead furnace, blower or inducer that won't run, flashing diagnostic LED fault codes, or intermittent no-heat events. Supplied as a complete kit, this OEM control board includes the correct firmware and connector layout for your unit, restoring reliable, code-correct operation without the guesswork of a universal board.\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 \/ Heil \/ Tempstar \/ Comfortmaker\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eGas Furnace Control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFit\u003c\/td\u003e\n\u003ctd\u003eOEM 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\u003eFactory replacement control board kit for ICP \/ Tempstar \/ Heil model RGS303SFAA0AAAA and related ICP-family furnaces using this integrated furnace control. Confirm OEM number 1183618 and the connector\/terminal layout against your existing board before ordering.\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 breaker and verify zero voltage with a multimeter; shut off the gas.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the blower\/service panel to reach the control board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every connector, plug, and wire position before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the harness connectors, release the board from its standoffs\/mounting screws, and remove it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new board, transfer any jumpers\/links, and reconnect every connector exactly per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore gas and power, run a full heat cycle, and verify the diagnostic LED shows 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 completely dead with no LED activity\u003c\/li\u003e\n\u003cli\u003eFlashing diagnostic fault\/error codes\u003c\/li\u003e\n\u003cli\u003eBlower or inducer won't run, or runs continuously\u003c\/li\u003e\n\u003cli\u003eIntermittent no-heat or random lockouts\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":63027271369075,"sku":"1183618","price":220.94,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047570096499,"sku":"1183618-GEN","price":169.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-1183618_9b2ec209-d4fa-43b9-9e28-5502668c6136.jpg?v=1782889719","url":"https:\/\/nationalhvacparts.com\/products\/icp-furnace-control-board-kit-for-rgs303sfaa0aaaa-oem-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}