{"product_id":"icp-furnace-control-board-for-wpg3604090lkc1-integrated-ignition-control-module-ships-today","title":"ICP Furnace Control Board for WPG3604090LKC1 — Integrated Ignition Control Module | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM furnace control board is the brain of your ICP \/ Tempstar \/ Heil WPG3604090LKC1 packaged gas unit. It manages the complete heating sequence — inducer start-up, pressure switch proving, hot surface igniter warm-up, gas valve timing, blower on\/off delays, and flame sensing. It also includes the integrated ignition control module function (OEM 1177661) on the same assembly. When this board fails, the furnace loses its ability to safely sequence ignition, so the unit either does nothing on a call for heat or locks out after a few failed trials. This part replaces OEM circuit board 1178358 and ignition control module 1177661. A faulty board is one of the most common causes of intermittent no-heat calls on rooftop and packaged gas\/electric units.\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 Numbers\u003c\/td\u003e\n\u003ctd\u003e1178358 (Circuit Board), 1177661 (Ignition Control Module)\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\u003eControl Voltage\u003c\/td\u003e\n\u003ctd\u003e24V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIgnition Type\u003c\/td\u003e\n\u003ctd\u003eHot Surface Ignition\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 as a direct OEM replacement for the ICP Tempstar Heil WPG3604090LKC1 packaged gas\/electric unit. The same board family is used across many related ICP-built brands including Comfortmaker, Arcoaire, KeepRite and Day \u0026amp; Night. Always match your existing board part number before ordering.\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 unit disconnect and breaker; verify zero voltage with a multimeter before touching any wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the control\/blower access panel to expose the board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every wire and connector position before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the wire harnesses, release the board mounting screws\/standoffs, and lift out the old board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new board, then reconnect every harness exactly as photographed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, initiate a call for heat, and confirm a full ignition sequence with proper blower timing.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFurnace ignores the call for heat — no inducer, no igniter glow\u003c\/li\u003e\n\u003cli\u003eRepeated lockouts after several failed ignition trials\u003c\/li\u003e\n\u003cli\u003eBlower runs constantly or fails to start after ignition\u003c\/li\u003e\n\u003cli\u003eVisible burn marks, corrosion, or cracked solder joints on the board\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":63021523861875,"sku":"1178358","price":206.7,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047538671987,"sku":"1178358-GEN","price":159.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-1178358_1a8ab095-88ce-4095-ae4c-a0fb6dda5490.jpg?v=1782888602","url":"https:\/\/nationalhvacparts.com\/products\/icp-furnace-control-board-for-wpg3604090lkc1-integrated-ignition-control-module-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}