{"product_id":"icp-pressure-switch-with-tubing-for-wpg4484115lka1-oem-1178417-ships-today-1","title":"ICP Pressure Switch with Tubing for WPG4484115LKA1 — OEM 1178417 | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis OEM air pressure switch with tubing (part 1178417, TUBING PRESSURE SWITCH) is the direct-fit safety control for the ICP\/Tempstar\/Heil WPG4484115LKA1 unit. The switch is a 24V normally-open device that proves the induced-draft blower is producing adequate negative pressure before the control board allows ignition. If venting is blocked, the draft motor is weak, or the switch itself sticks, the furnace will not light or will short-cycle on a safety lockout. Replacing a faulty switch and its hose restores reliable proving of draft and safe operation.\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\u003eAir Pressure Switch (with tubing)\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\u003eAction\u003c\/td\u003e\n\u003ctd\u003eNormally Open, proves draft\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\u003eBuilt for the ICP\/Tempstar\/Heil WPG4484115LKA1 and shared-platform furnaces using the same draft-proving control. Confirm the pressure set point on your original switch matches 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 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 service panel to reach the inducer assembly and switch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the wire terminals and tubing routing before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Pull the spade connectors and pressure hose, then unscrew the old switch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new switch, attach the tubing without kinks, and reconnect the wires per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and gas, start a heat call, and confirm the inducer proves and burners light.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFurnace inducer runs but burners never light\u003c\/li\u003e\n\u003cli\u003eLockout or fault code indicating pressure switch open\u003c\/li\u003e\n\u003cli\u003eShort-cycling during the heating sequence\u003c\/li\u003e\n\u003cli\u003eCracked or disconnected pressure tubing\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":63027208225139,"sku":"1178417","price":37.7,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047708148083,"sku":"1178417-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-1178417_6bbbcf26-5cb9-4f69-bf96-85f18e20614b.jpg?v=1782895287","url":"https:\/\/nationalhvacparts.com\/products\/icp-pressure-switch-with-tubing-for-wpg4484115lka1-oem-1178417-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}