{"product_id":"icp-pressure-switch-for-wpg3484090rkc1-oem-tubing-pressure-switch-ships-today","title":"ICP Pressure Switch for WPG3484090RKC1 — OEM Tubing Pressure Switch | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis genuine OEM tubing pressure switch (part number 1178417) is a safety control for the ICP \/ Tempstar \/ Heil model WPG3484090RKC1 furnace. The pressure switch confirms that the inducer draft motor is moving combustion gases properly before the control board allows the igniter and gas valve to fire. It senses negative pressure through its connected tubing and closes to prove draft. If the switch fails, sticks open, or the tubing clogs with condensate, the furnace will not ignite — a deliberate safety lockout that prevents dangerous flue-gas conditions. Replacing a faulty switch with the correct OEM part restores reliable ignition without defeating the safety circuit.\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\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 \/ Combustion Air Proving\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eGas Furnace\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eA direct-fit replacement for the ICP, Tempstar, and Heil model WPG3484090RKC1 and related furnaces. Pressure switches are calibrated to a specific trip point — always match the part number and rating to your 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 — Turn off the gas and disconnect electrical power, then verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the furnace access panel to reach the switch and inducer assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the wire terminals and tubing connection before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Pull the tubing off the port, 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 wires and tubing per your photo, and confirm the tubing has no kinks or trapped condensate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore gas and power, call for heat, and confirm the inducer runs 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 light\u003c\/li\u003e\n\u003cli\u003eControl board flashes a pressure-switch fault code\u003c\/li\u003e\n\u003cli\u003eSwitch chatters or fails to close on a call for heat\u003c\/li\u003e\n\u003cli\u003eFurnace short-cycles or locks out intermittently\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":63021526221171,"sku":"1178417","price":45.44,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047704707443,"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_69d03d25-6e8f-43e5-bf82-971be76f3b13.jpg?v=1782895059","url":"https:\/\/nationalhvacparts.com\/products\/icp-pressure-switch-for-wpg3484090rkc1-oem-tubing-pressure-switch-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}