{"product_id":"tempstar-pressure-switch-kit-for-tsh548hka100-hi-lo-oem-ships-today","title":"Tempstar Pressure Switch Kit for TSH548HKA100 — Hi \u0026 Lo OEM | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM pressure switch set for the Tempstar TSH548HKA100 includes both the high-pressure switch (part #1184656) and low-pressure switch (part #1184655). These refrigerant safety switches monitor system pressure and open the control circuit to shut the compressor down before damage occurs — the high-pressure switch protects against a blocked condenser, dirty coil, or overcharge, while the low-pressure switch guards against loss of charge, a restricted metering device, or low airflow across the evaporator. A failed or nuisance-tripping switch typically shows up as a unit that won't start, short-cycles, or locks out intermittently with no other obvious fault.\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\u003eHigh-Pressure Part #\u003c\/td\u003e\n\u003ctd\u003e1184656\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLow-Pressure Part #\u003c\/td\u003e\n\u003ctd\u003e1184655\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eRefrigerant Pressure Switch (Hi \u0026amp; Lo)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTempstar (OEM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eAutomatic-reset compressor protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCircuit\u003c\/td\u003e\n\u003ctd\u003e24V low-voltage control\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 OEM replacement for the Tempstar TSH548HKA100 condensing unit. These switches are shared across related ICP\/Heil\/Comfortmaker heat pump and AC platforms using the same refrigerant safety circuit. Verify the connector style and pressure trip ratings against your existing switches 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, verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the control\/service panel on the outdoor unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photo the wiring and note which switch ties to high vs. low side.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — These mount on Schrader-style fittings; disconnect the leads and unthread the failed switch (no recovery needed on self-sealing ports).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Thread the new switch onto the matching port, reconnect leads per your photo, and confirm no leaks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, run the unit, and verify the compressor energizes and pressures stabilize.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCompressor won't start even though the contactor pulls in.\u003c\/li\u003e\n\u003cli\u003eUnit short-cycles or locks out with no charge or airflow problem found.\u003c\/li\u003e\n\u003cli\u003eSwitch fails a continuity test at normal operating pressure.\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":63021630882163,"sku":"1184656-GEN","price":42.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048469348723,"sku":"1184656","price":55.84,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-single-1184656_435fb59b-f5bc-492a-a7dd-d766327fb4bb.jpg?v=1782960684","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-pressure-switch-kit-for-tsh548hka100-hi-lo-oem-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}