{"product_id":"icp-tubing-pressure-switch-for-wpg4484130rkb1-oem-1178417-ships-today","title":"ICP Tubing Pressure Switch for WPG4484130RKB1 — OEM 1178417 | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis is a genuine OEM tubing-style pressure switch (part number 1178417) for the ICP \/ Heil \/ Tempstar WPG4484130RKB1 packaged gas unit. The pressure switch is a safety device that proves correct draft and airflow through the inducer before the control board allows the igniter and gas valve to energize. It uses a sensing tube connected to the inducer housing or vent; when negative pressure reaches the switch set point, the internal diaphragm closes the 24V contacts and the ignition sequence proceeds. If proper pressure is never sensed, the switch keeps the contacts open and locks out the burners to prevent unsafe combustion. Common failure symptoms include the furnace running the inducer but never lighting, short cycling on call for heat, or a control-board fault flash indicating an open or stuck pressure switch.\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 \/ Air-Proving Pressure Switch\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\u003eCircuit\u003c\/td\u003e\n\u003ctd\u003eSingle-pole, normally open\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\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM 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 OEM replacement for the ICP \/ Heil \/ Tempstar WPG4484130RKB1 packaged gas system. ICP-family packaged units share components across the Heil, Tempstar, Comfortmaker, and Arcoaire brands, so always confirm your set point and tubing connection match the original switch 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 and verify zero voltage with a multimeter before touching any wiring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the service panel to expose the inducer assembly and control board.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the wire and tubing routing before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Pull the two 24V spade terminals, detach the sensing tube, and unscrew the old pressure switch from its bracket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new switch, reconnect the sensing tube fully seated, and reattach the terminals per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, start a heat call, and confirm the inducer proves pressure and the burners light normally.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eInducer motor runs but burners never ignite.\u003c\/li\u003e\n\u003cli\u003eFurnace short cycles or locks out on a pressure-switch fault code.\u003c\/li\u003e\n\u003cli\u003eSwitch fails to close even with a clear vent and good draft.\u003c\/li\u003e\n\u003cli\u003eCracked sensing tube port or contacts that test open under draft.\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. National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"ICP","offers":[{"title":"OEM","offer_id":63021500694899,"sku":"WPG4484130RKB1","price":37.7,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047757791603,"sku":"WPG4484130RKB1-GEN","price":29.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-single-WPG4484130RKB1.jpg?v=1782897035","url":"https:\/\/nationalhvacparts.com\/products\/icp-tubing-pressure-switch-for-wpg4484130rkb1-oem-1178417-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}