{"product_id":"carrier-ph10ja042000abaa-pressure-switch-jria74","title":"OEM Carrier High \u0026 Low Pressure Switch Kit HK02ZA395 \/ HK02ZB038 — PH1","description":"\u003ch1\u003eOEM Carrier High \u0026amp; Low Pressure Switch Kit HK02ZA395 \/ HK02ZB038 for Model PH10JA042000ABAA\u003c\/h1\u003e\u003cp\u003eThis genuine OEM Carrier pressure switch kit includes both the \u003cstrong\u003eHK02ZA395 High Pressure Switch\u003c\/strong\u003e (406 PSI open \/ 300 PSI close) and the \u003cstrong\u003eHK02ZB038 Low Pressure Switch\u003c\/strong\u003e (7 PSI open \/ 22 PSI close) — the factory-specified refrigerant-side safety switches for the \u003cstrong\u003eCarrier PH10JA042000ABAA\u003c\/strong\u003e heat pump system. These switches protect the compressor by monitoring refrigerant pressure on both the high and low sides of the refrigerant circuit. When either switch fails or trips without resetting, the system enters a safety lockout, short-cycles, or throws a refrigerant pressure fault code — and your unit refuses to run until the condition is corrected.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs — HK02ZA395 (High Side):\u003c\/strong\u003e Open @ 406 PSI | Close @ 300 PSI | 240 VAC | SPST | 1\/8\" NPT thread | Sensata PS80-03-0018 platform | Replaces: 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401, HK02ZA435\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs — HK02ZB038 (Low Side):\u003c\/strong\u003e Open @ 7 PSI | Close @ 22 PSI | 50\" leads | Sensata PS80 platform | Factory-matched refrigerant pressure ratings for R-22 or R-410A systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM Carrier pressure switches are calibrated to exact cut-in\/cut-out tolerances at the factory. Aftermarket switches frequently carry ±10–15% pressure tolerance, risking nuisance trips, compressor short-cycling, or — more critically — failure to protect the compressor under a true high-pressure fault.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Refrigerant-side pressure switches require EPA 608 certification to access the refrigerant circuit. Tools needed: manifold gauge set, 1\/8\" NPT fittings, needle-nose pliers, multimeter for continuity check before and after install. Always recover refrigerant before removing the high-side switch. Photograph all wiring before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against manufacturing defects. Ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e This kit is engineered for the \u003cstrong\u003eCarrier PH10JA042000ABAA\u003c\/strong\u003e packaged heat pump unit. Always verify your model's data plate and existing pressure ratings before ordering. Our technical team is available to confirm fitment — contact us before you order if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641993253235,"sku":"CARRIE-PH10JA042000ABAA-PRESSURE_SWITCH-HK02ZA395","price":93.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641993286003,"sku":"CARRIE-PH10JA042000ABAA-PRESSURE_SWITCH-HK02ZA395-GEN","price":82.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK02ZA395_1c0eb264-227e-4048-99aa-4082685690fc.jpg?v=1775033154","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph10ja042000abaa-pressure-switch-jria74","provider":"National HVAC Parts","version":"1.0","type":"link"}