{"product_id":"icp-pressure-switch-for-wpg3484115lkc1-tubing-air-pressure-switch-ships-today-1","title":"ICP Pressure Switch for WPG3484115LKC1 — Tubing Air Pressure Switch | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis genuine OEM tubing pressure switch (part #1178417) is the combustion safety control for the ICP\/Tempstar\/Heil WPG3484115LKC1 packaged unit. It is connected by tubing to the inducer\/vent system and monitors negative draft pressure. Before the control board allows the igniter and gas valve to fire, the pressure switch must prove that the inducer is running and the flue path is clear. If draft is insufficient — due to a blocked vent, condensate-clogged tube, weak inducer, or the switch itself failing — the contacts won't close and the board safely halts ignition. A faulty or stuck switch is a frequent cause of no-heat lockouts and inducer-running-but-no-ignition complaints.\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\u003eTubing 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\u003eDraft \/ Combustion Safety 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\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eDirect OEM fit for the ICP\/Tempstar\/Heil WPG3484115LKC1 packaged system. This switch is calibrated for the model's specific inducer and venting; using the exact OEM part ensures the correct pressure setpoint. Confirm the tubing port orientation and setpoint match the part being replaced.\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 gas, 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 and tubing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the wire terminals and tubing connections before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Pull the wire spades and tubing, then unscrew the switch from its bracket. Inspect and clear the tubing port while you're in there.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new switch, reconnect the tubing and wires per your photo, ensuring no kinks in the tube.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and gas, start a heat cycle, and confirm the switch closes and the unit ignites normally.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInducer runs but the unit never ignites\u003c\/li\u003e\n\u003cli\u003eRepeated no-heat lockouts after the draft stage\u003c\/li\u003e\n\u003cli\u003eSwitch fails to close or chatters when measured with a meter\u003c\/li\u003e\n\u003cli\u003eHeat works intermittently with pressure-related fault codes\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":63027218153843,"sku":"1178417","price":40.3,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047704805747,"sku":"1178417-GEN","price":31.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-single-1178417_867496ac-fb42-4b66-a986-6aa7659b15d5.jpg?v=1782895067","url":"https:\/\/nationalhvacparts.com\/products\/icp-pressure-switch-for-wpg3484115lkc1-tubing-air-pressure-switch-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}