{"product_id":"tempstar-high-pressure-switch-for-tca748gka200-auto-reset-ships-today","title":"Tempstar High Pressure Switch for TCA748GKA200 — Auto-Reset | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis genuine OEM high pressure switch (part number 1184656) protects the Tempstar TCA748GKA200 from dangerously high refrigerant discharge pressure. The switch is wired into the 24V control circuit and opens to shut down the compressor whenever system head pressure climbs above its trip point — a critical safety device that prevents compressor damage, refrigerant line rupture, and unsafe operating conditions. A failed or nuisance-tripping high pressure switch will cause the unit to short-cycle, lock out, or refuse to start, often misdiagnosed as a control board or contactor problem.\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 Switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTempstar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eHigh-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\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eCompressor protection\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-fit replacement for the Tempstar TCA748GKA200 condensing unit and shared across many ICP-family outdoor units (Heil, Comfortmaker, Arcoaire) using the same high-side safety control. Confirm the part number and connection style on your existing switch before installing.\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 outdoor disconnect and verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the control panel access cover to reach the switch and its terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the two control wires and their terminal locations before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Recover or pump down refrigerant as required, then disconnect the wires and unthread the old switch from its Schrader-style fitting on the high-side line.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Thread on the new switch with a fresh seal, reconnect the control wires per your photo, and leak-check the connection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, start the system, and confirm the unit runs without nuisance tripping and that head pressure stays in range.\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 a high pressure fault.\u003c\/li\u003e\n\u003cli\u003eUnit will not start even with normal pressures.\u003c\/li\u003e\n\u003cli\u003eSwitch shows open continuity when system pressure is normal.\u003c\/li\u003e\n\u003cli\u003eIntermittent cooling with no clear airflow or charge issue.\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":63021661258099,"sku":"1184656-GEN","price":34.0,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048450408819,"sku":"1184656","price":44.2,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-single-1184656_c7c3baca-2334-4508-8048-8d1540a9f1a9.jpg?v=1782960055","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-high-pressure-switch-for-tca748gka200-auto-reset-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}