{"product_id":"icp-pressure-switch-with-tubing-for-wpg4484090rka1-oem-part-1178417-ships-today-1","title":"ICP Pressure Switch with Tubing for WPG4484090RKA1 — OEM Part 1178417 | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis genuine OEM pressure switch with tubing (part number 1178417) is the safety device that proves correct draft before the burners can light on your ICP WPG4484090RKA1 packaged gas unit. When the inducer motor starts, it creates negative pressure sensed through the attached tubing; the switch then closes to tell the control board that venting is clear and combustion air is flowing. If the vent is blocked, the inducer is weak, or the switch or tubing fails, the contacts stay open and the board locks out ignition to prevent unsafe operation. A cracked tube, clogged port, or stuck switch is a frequent cause of no-heat lockouts.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\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-Proving 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\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eDraft \/ combustion air proving safety\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eWPG4484090RKA1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM Direct Replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eSpecified for the heating section of the ICP WPG4484090RKA1 packaged gas\/electric unit and the matching Tempstar, Heil, and Comfortmaker models built on this chassis. Match the pressure setpoint (\"WC) and port configuration stamped on your original switch before installing.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power and shut off the gas, then verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the burner\/control compartment service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the switch wiring and tubing routing before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Pull the spade terminals, slide the tubing off the port, and unscrew the old switch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new switch, attach the tubing to the correct port with no kinks, and reconnect the leads per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore gas and power, run a heat cycle, and confirm the switch closes after the inducer starts and the burners light.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFurnace locks out on a heat call with no burner ignition\u003c\/li\u003e\n\u003cli\u003eInducer runs but the switch never closes\u003c\/li\u003e\n\u003cli\u003eCracked, brittle, or disconnected sensing tubing\u003c\/li\u003e\n\u003cli\u003eSwitch stuck open or closed when tested with a manometer\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\n\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":63027208552819,"sku":"1178417","price":45.44,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047708082547,"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_898a7a50-b972-4007-a0e8-afe91a5ba8a2.jpg?v=1782895283","url":"https:\/\/nationalhvacparts.com\/products\/icp-pressure-switch-with-tubing-for-wpg4484090rka1-oem-part-1178417-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}