{"product_id":"icp-tubing-pressure-switch-for-wpg4364090rkb1-oem-1178417-ships-today-1","title":"ICP Tubing Pressure Switch for WPG4364090RKB1 — OEM 1178417 | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis is a genuine OEM tubing pressure switch (part number 1178417) for the ICP\/Tempstar\/Heil WPG4364090RKB1 packaged gas\/electric unit. The pressure switch is a critical safety control that proves adequate combustion airflow and proper venting before the furnace ignition sequence is allowed to begin. It uses a sensing tube connected to the inducer\/vent system; when the induced-draft blower establishes the correct negative pressure, the switch contacts close and signal the control board that it is safe to energize the igniter and open the gas valve. A failed or out-of-calibration switch is one of the most common causes of intermittent no-heat lockout calls.\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 \/ Comfortmaker)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eCombustion airflow \/ draft proving\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnection\u003c\/td\u003e\n\u003ctd\u003eSensing tube + spade terminals\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\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eDesigned as a factory-exact replacement for the ICP WPG4364090RKB1 packaged unit and the related Tempstar, Heil, and Comfortmaker WPG-series gas\/electric package equipment that originally shipped with part 1178417. Always verify the part number printed on your existing switch 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 at the disconnect and thermostat, then verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the control\/blower service panel on the unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the wiring and sensing-tube routing before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Pull the spade terminals, slide off the rubber sensing hose, and unscrew the switch from its bracket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new switch, reconnect the sensing tube with no kinks, and reattach the wires per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, start a heat cycle, and confirm the inducer proves and the burners light without lockout.\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 (pressure switch lockout).\u003c\/li\u003e\n\u003cli\u003eControl board flashes a pressure-switch \/ draft fault code.\u003c\/li\u003e\n\u003cli\u003eIntermittent no-heat that clears after a reset.\u003c\/li\u003e\n\u003cli\u003eSwitch contacts stuck open or closed when tested with a meter.\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":63027211075955,"sku":"1178417","price":45.44,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047757529459,"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_0b339f40-afb2-40e7-882f-f5aefd508ec5.jpg?v=1782897024","url":"https:\/\/nationalhvacparts.com\/products\/icp-tubing-pressure-switch-for-wpg4364090rkb1-oem-1178417-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}