{"product_id":"icp-tubing-pressure-switch-for-wpg4484115rka1-oem-1178417-ships-today-1","title":"ICP Tubing Pressure Switch for WPG4484115RKA1 — OEM 1178417 | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis is a genuine OEM tubing-style air pressure switch (part number 1178417) for the ICP Tempstar\/Heil WPG4484115RKA1 unit. The pressure switch is a critical safety device that confirms proper venting and combustion airflow before the control board permits ignition. It senses the negative pressure created by the inducer\/draft motor through a short length of tubing; when the correct pressure is detected, its internal contacts close and signal the board to proceed with the heating sequence. If adequate airflow is not present — due to a blocked flue, failed inducer, condensate backup, or cracked tubing — the switch stays open and locks out the burners to prevent unsafe 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\u003eTubing-Mount Air 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\u003eCombustion\/Vent Airflow Proving\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\u003eEngineered as a direct-fit replacement for the ICP Tempstar Heil model WPG4484115RKA1 and shared-platform packaged units that use OEM pressure switch 1178417. Always match the trip set-point and tubing configuration to your original part.\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 service\/control panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all wires and tubing routing before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Pull the spade connectors and pressure tubing, then unscrew the old switch from its bracket.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new switch, reconnect the tubing free of kinks, and reattach the wires per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and verify the unit proves airflow and fires normally.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eUnit locks out or displays a pressure-switch fault code on a heat call\u003c\/li\u003e\n\u003cli\u003eInducer runs but burners never ignite\u003c\/li\u003e\n\u003cli\u003eShort cycling on the call for heat\u003c\/li\u003e\n\u003cli\u003eSwitch contacts fail to close even with verified clean venting and a good inducer\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":63027207897459,"sku":"1178417","price":45.44,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047757758835,"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_40b81843-ac43-45e9-b858-b2789ca95cdb.jpg?v=1782897033","url":"https:\/\/nationalhvacparts.com\/products\/icp-tubing-pressure-switch-for-wpg4484115rka1-oem-1178417-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}