{"product_id":"icp-pressure-switch-for-wpg4604090rka1-oem-with-tubing-ships-today-1","title":"ICP Pressure Switch for WPG4604090RKA1 — OEM with Tubing | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM pressure switch assembly with tubing (part number 1178417) is a critical safety control in the gas heating section of your ICP WPG4604090RKA1 package unit. It senses the negative pressure created by the inducer (draft) motor and confirms that the venting path is clear before the control allows the igniter and gas valve to fire. If the switch does not close, the furnace will not begin its heating sequence — a deliberate safety lockout that prevents firing without proper combustion airflow. A failed switch, a cracked or blocked tube, or condensate buildup can cause nuisance no-heat faults. Replacing the switch and tubing restores safe, reliable ignition.\u003c\/p\u003e\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\u003eOEM Part 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 Pressure Switch with Tubing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eICP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eFurnace Draft \/ Combustion Safety\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eDirect OEM replacement for the draft pressure switch on the ICP \/ Tempstar \/ Heil WPG4604090RKA1 package unit, and fits related ICP-family furnaces and package units using this switch. Confirm the trip-pressure rating and port configuration match your original part before installing.\u003c\/p\u003e\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Shut off gas and disconnect power, then verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the service panel to reach the pressure switch near the inducer assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the tubing routing and wire connections before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Pull the tubing off the port, disconnect the switch wires, and 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 wires, and route the tubing without kinks or low spots that trap condensate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore gas and power and confirm the inducer starts, the switch closes, and the burners ignite.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFurnace inducer runs but the burners never light.\u003c\/li\u003e\n\u003cli\u003eControl board flashes a pressure switch fault code.\u003c\/li\u003e\n\u003cli\u003eCracked, brittle, or blocked sensing tubing.\u003c\/li\u003e\n\u003cli\u003eIntermittent no-heat lockouts, especially in cold or damp conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\n\u003cp\u003eShips same day before 3 PM CST. 30-day returns. National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"ICP","offers":[{"title":"OEM","offer_id":63027206717811,"sku":"1178417","price":42.84,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047706706291,"sku":"1178417-GEN","price":32.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-single-1178417_ec6a0543-8265-44a2-b095-e86bad410b65.jpg?v=1782895191","url":"https:\/\/nationalhvacparts.com\/products\/icp-pressure-switch-for-wpg4604090rka1-oem-with-tubing-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}