{"product_id":"tempstar-pressure-switch-for-tca748gka100-high-pressure-limit-safety-switch-ships-today","title":"Tempstar Pressure Switch for TCA748GKA100 — High-Pressure Limit Safety Switch | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM high-pressure switch (part number 1184656) is a refrigerant-side safety control for the Tempstar TCA748GKA100 air conditioning condensing unit. The switch monitors discharge-line pressure and opens the 24V control circuit when system pressure climbs above its factory trip point, shutting down the compressor before damage can occur. High head pressure is most often caused by a dirty condenser coil, a failing condenser fan motor, overcharge, or a blocked liquid line. When the switch trips repeatedly, or fails closed and never protects the system, the compressor is at risk. A switch that fails open will lock the unit out and prevent cooling entirely.\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\u003e1184656\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eHigh-Pressure Limit Switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTempstar (ICP \/ Heil)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eRefrigerant high-side safety cutout\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Voltage\u003c\/td\u003e\n\u003ctd\u003e24V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eTCA748GKA100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eDesigned as a direct-fit replacement for the Tempstar TCA748GKA100 condensing unit. The same 1184656 switch is shared across many ICP-family split-system condensers and heat pumps sold under the Tempstar, Heil, Comfortmaker, and ICP brands. Confirm your existing switch part number before ordering.\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 at the disconnect and breaker, then verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the condenser service\/control panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all wiring before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the two control leads and unthread the switch from its Schrader-style refrigerant port (the port is self-sealing; no recovery required on most units).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Thread in the new switch hand-tight plus a quarter turn, then reconnect the leads per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, start the unit, and confirm normal operation with no nuisance lockout.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCompressor short-cycles or locks out on high-pressure faults with a clean coil and correct charge.\u003c\/li\u003e\n\u003cli\u003eUnit runs but never trips on a genuine high-pressure event (switch failed closed).\u003c\/li\u003e\n\u003cli\u003eNo cooling and the switch reads open at normal pressure (switch failed open).\u003c\/li\u003e\n\u003cli\u003eVisible corrosion, cracked housing, or damaged terminals.\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":"Tempstar","offers":[{"title":"Direct Replacement","offer_id":63021661782387,"sku":"1184656-GEN","price":29.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048467939699,"sku":"1184656","price":38.94,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-single-1184656_8410ef5a-50a8-4e13-a37d-a352fa62e991.jpg?v=1782960634","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-pressure-switch-for-tca748gka100-high-pressure-limit-safety-switch-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}