{"product_id":"icp-pressure-switch-for-wpg3304060lkc1-oem-tubing-air-proving-switch-ships-today-1","title":"ICP Pressure Switch for WPG3304060LKC1 — OEM Tubing Air-Proving Switch | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis genuine OEM tubing pressure switch (OEM #1178417) is the draft\/air-proving safety switch for the ICP\/Tempstar\/Heil WPG3304060LKC1 package gas unit. It senses negative pressure created by the inducer motor through its sensing tube and closes its contacts to prove proper venting before the control board allows ignition. If the switch fails open, is clogged, or has a cracked tube, the furnace will not fire and the board reports a pressure switch fault — a critical safety interlock that prevents operation when flue gases cannot vent. Replacing it with the correct OEM switch restores safe, reliable startup.\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 \/ Tempstar \/ Heil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eDraft \/ Vent Safety Proving\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003ePackage Gas \/ Furnace\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eDirect fit for the ICP\/Tempstar\/Heil WPG3304060LKC1 package gas\/electric unit and related WPG-series models using the 1178417 pressure switch. Verify your trip set point and tube fitting before ordering.\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.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the control\/inducer compartment service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photo the switch wiring and the routing of the sensing tube.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Pull the sensing tube, disconnect the spade terminals, and remove the mounting screws.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new switch, reconnect the wiring, and reattach the sensing tube with no kinks or moisture traps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and confirm the switch closes on a heat call and the 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 ignite\u003c\/li\u003e\n\u003cli\u003eControl board flashes a pressure switch fault code\u003c\/li\u003e\n\u003cli\u003eSwitch will not close even with good inducer draft\u003c\/li\u003e\n\u003cli\u003eCracked sensing tube or stuck contacts\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":63027222577523,"sku":"1178417","price":45.44,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047703921011,"sku":"1178417-GEN","price":34.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-single-1178417_4ca4b901-8f6f-433e-b8d2-4ef62f874a98.jpg?v=1782895043","url":"https:\/\/nationalhvacparts.com\/products\/icp-pressure-switch-for-wpg3304060lkc1-oem-tubing-air-proving-switch-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}