{"product_id":"carrier-ph2peb042000ab-pressure-switch-jria74","title":"OEM Carrier High Pressure Switch HK02ZA395 for PH2PEB042000AB","description":"\u003ch1\u003eOEM Carrier High Pressure Switch HK02ZA395 \/ HK02ZB044 for Model PH2PEB042000AB\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier high pressure switch (part number \u003cstrong\u003eHK02ZA395\u003c\/strong\u003e, with companion low pressure switch \u003cstrong\u003eHK02ZB044\u003c\/strong\u003e) is the factory-specified refrigerant safety switch for the \u003cstrong\u003eCarrier PH2PEB042000AB\u003c\/strong\u003e heat pump or packaged unit. The high pressure switch monitors refrigerant discharge-side pressure and cuts power to the compressor when pressure exceeds a safe threshold, protecting the compressor from catastrophic failure. When it fails — either stuck open or stuck closed — you'll typically see a compressor lockout fault, an HP fault code on the control board, or a system that simply won't start the cooling or heating cycle. Replacing it with a genuine OEM switch restores factory-calibrated trip points and clears nuisance lockout codes.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs — HK02ZA395 (High Pressure Switch):\u003c\/strong\u003e Opens at \u003cstrong\u003e395 PSI\u003c\/strong\u003e | Closes at \u003cstrong\u003e295 PSI\u003c\/strong\u003e | 1\/8\" NPT thread | Sensata PS80-03-0018 platform | 6(6)A @ 240 VAC | PMAX 41B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs — HK02ZB044 (Low Pressure Switch):\u003c\/strong\u003e Opens at \u003cstrong\u003e7 PSI\u003c\/strong\u003e | Closes at \u003cstrong\u003e22 PSI\u003c\/strong\u003e | 50\" leads | 24V | Country of origin: Mexico\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM Carrier pressure switches are calibrated to exact factory trip points (±0 PSI tolerance). Generic aftermarket switches often carry wider pressure tolerances, leading to nuisance trips or, worse, failure to protect the compressor under actual over-pressure conditions — voiding equipment warranty.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Recover refrigerant before removing any pressure switch with a refrigerant-side Schrader connection. Tools needed: refrigerant recovery machine, manifold gauges, 1\" open-end wrench, thread-seal tape. Always verify system pressure before re-energizing. EPA 608 certification required for refrigerant handling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects in materials and workmanship. Ships same business day from our warehouse when ordered before 3 PM ET.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered for \u003cstrong\u003eCarrier model PH2PEB042000AB\u003c\/strong\u003e. Verify part number against your unit's data plate and wiring diagram before ordering. Both HK02ZA395 and HK02ZB044 are sold individually — confirm which switch (high-side or low-side) has failed before purchasing. Questions about fitment? Our HVAC parts specialists verify compatibility before you order — contact us today and get your system back up fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641475420531,"sku":"CARRIE-PH2PEB042000AB-PRESSURE_SWITCH-HK02ZA395","price":95.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641475453299,"sku":"CARRIE-PH2PEB042000AB-PRESSURE_SWITCH-HK02ZA395-GEN","price":83.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK02ZA395_3696ee48-fb70-44e4-8672-d17dc122a9cb.jpg?v=1775033588","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph2peb042000ab-pressure-switch-jria74","provider":"National HVAC Parts","version":"1.0","type":"link"}