{"product_id":"icp-furnace-control-board-for-wpg3484090lkc1-integrated-ignition-control-module-ships-today","title":"ICP Furnace Control Board for WPG3484090LKC1 — Integrated Ignition Control Module | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis OEM integrated furnace control board (part numbers 1178358 circuit board and 1177661 ignition control module) is the electronic brain of your ICP\/Tempstar\/Heil WPG3484090LKC1 packaged gas\/electric unit. It sequences the entire heating cycle — energizing the inducer, proving the pressure switch, powering the hot surface igniter, opening the gas valve, and timing the blower on\/off delays. It continuously monitors flame via the sensor and provides safety lockout if ignition fails. When this board fails you will typically see no ignition, intermittent heat, a furnace stuck in lockout, or a control LED flashing a diagnostic fault code. A failed board is the most common cause of complete no-heat conditions once the igniter and pressure switch test good.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\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\u003e1178358 \/ 1177661\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eIntegrated Furnace Ignition 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\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eIgnition sequencing, blower timing, flame sense, safety lockout\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eDesigned as a direct OEM replacement for the ICP\/Tempstar\/Heil WPG3484090LKC1 packaged gas\/electric unit. Built under the ICP family of brands including Tempstar, Heil, and Comfortmaker. Always match your existing board's part number and connector layout before installing.\u003c\/p\u003e\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power at the unit disconnect and breaker, then verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the control\/blower access panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph every wire and connector on the existing board before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug all harness connectors and ground wires, remove the mounting screws, and lift out the old board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new board, then reconnect each harness exactly per your photos.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and run a full heat cycle; confirm proper ignition, flame proof, and blower operation with no fault codes.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFurnace will not ignite or goes straight to lockout\u003c\/li\u003e\n\u003cli\u003eDiagnostic LED flashing an error\/fault code\u003c\/li\u003e\n\u003cli\u003eBlower runs continuously or never starts\u003c\/li\u003e\n\u003cli\u003eIntermittent heating that resets after a power cycle\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\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":63021526286707,"sku":"1178358","price":214.5,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047538246003,"sku":"1178358-GEN","price":165.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-control-board-furnace-1178358_be98ef53-8f78-45c2-a4b5-20abda9ea4c7.jpg?v=1782888584","url":"https:\/\/nationalhvacparts.com\/products\/icp-furnace-control-board-for-wpg3484090lkc1-integrated-ignition-control-module-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}