{"product_id":"icp-tubing-pressure-switch-for-wpg3424090lkc1-oem-draft-safety-switch-ships-today-1","title":"ICP Tubing Pressure Switch for WPG3424090LKC1 — OEM Draft Safety Switch | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis OEM tubing pressure switch (part number 1178417) is the air-proving safety device for the ICP Tempstar Heil WPG3424090LKC1 gas furnace. It monitors negative pressure created by the inducer\/draft blower through its sensing tube and closes its contacts only when adequate venting airflow is confirmed. If the switch never proves, the control board locks out ignition to prevent unsafe combustion. A failed or clogged pressure switch is one of the most common causes of a furnace that ignites the inducer but never lights the burners. Typical failure symptoms include no heat with the inducer running, repeated short-cycling on a pressure fault, and ignition lockout codes flashed by the control board.\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\u003e1178417\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eTubing Pressure Switch (Draft\/Inducer)\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\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eWPG3424090LKC1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eCombustion air \/ draft proving safety\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFit\u003c\/td\u003e\n\u003ctd\u003eOEM Direct Replacement\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-fit OEM replacement for the ICP Tempstar Heil WPG3424090LKC1 packaged unit. ICP-family brands (Comfortmaker, Heil, Tempstar, Arcoaire) frequently share this exact pressure switch assembly; always confirm the printed part number against the original.\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 furnace switch and breaker; verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the furnace\/blower service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the two wire leads and the sensing tube routing before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Pull the sensing tube off the switch port, disconnect the spade terminals, and unscrew the switch from its bracket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new switch, reconnect the spade terminals, and reseat the sensing tube fully onto the port.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, start a heat call, and confirm the inducer proves and the burners light without a pressure fault.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eInducer runs but burners never ignite\u003c\/li\u003e\n\u003cli\u003eFurnace short-cycles or locks out on a pressure\/draft fault code\u003c\/li\u003e\n\u003cli\u003eSwitch contacts stuck open or stuck closed when tested with a meter\u003c\/li\u003e\n\u003cli\u003eCracked switch body or a sensing port clogged with debris\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":63027219792243,"sku":"1178417","price":41.6,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047756513651,"sku":"1178417-GEN","price":32.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-single-1178417_bfc1d0f7-7dcd-4f62-bd07-124632df865d.jpg?v=1782896982","url":"https:\/\/nationalhvacparts.com\/products\/icp-tubing-pressure-switch-for-wpg3424090lkc1-oem-draft-safety-switch-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}