{"product_id":"carrier-ph2peb048000aa-pressure-switch-jria74","title":"OEM Carrier High \u0026 Low Pressure Switch Kit for PH2PEB048000AA","description":"\u003ch1\u003eOEM Carrier High Pressure Switch HK02ZA395 \u0026amp; Low Pressure Switch HK02ZB044 for Model PH2PEB048000AA\u003c\/h1\u003e\u003cp\u003eThis listing covers both factory OEM refrigerant pressure switches specified for the \u003cstrong\u003eCarrier PH2PEB048000AA\u003c\/strong\u003e heat pump \/ packaged unit. The \u003cstrong\u003eHK02ZA395 high pressure switch\u003c\/strong\u003e opens at 406 PSI and closes at 295 PSI, protecting the compressor from dangerously elevated refrigerant pressure. The \u003cstrong\u003eHK02ZB044 low pressure switch\u003c\/strong\u003e opens at 7 PSI and closes at 22 PSI, preventing compressor operation during low-charge or loss-of-charge conditions. When either switch fails or trips without reset, you'll typically see a system lockout, a fault code on the control board, or the unit short-cycling immediately after startup.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHK02ZA395 Specs:\u003c\/strong\u003e High pressure safety switch | Open 406 PSI \/ Close 295 PSI | 1\/8\" NPT thread | 240 VAC | Sensata PS80 platform | OEM Carrier part\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHK02ZB044 Specs:\u003c\/strong\u003e Low pressure switch | Open 7 PSI \/ Close 22 PSI | 50\" lead wires | 24V | Cut-in 7 \/ Cut-out 22 | Made in Mexico | OEM Carrier part\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM pressure switches are factory-calibrated to exact trip points. Generic aftermarket switches often carry ±5–10% PSI tolerances, which can allow nuisance trips or, worse, delayed protection — risking costly compressor damage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Recover refrigerant before replacing the high-pressure switch (EPA 608 required). The low-pressure switch replacement is straightforward with the system in a safe, de-energized state. Tools needed: manifold gauge set, adjustable wrench, multimeter, Teflon tape. Always photograph wiring before disconnecting terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty on both switches. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as direct OEM replacements for \u003cstrong\u003eCarrier model PH2PEB048000AA\u003c\/strong\u003e. The HK02ZA395 also replaces legacy part numbers 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, and others. Verify your model's data plate and existing switch trip points before ordering. Our team is available to confirm fitment prior to purchase.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641470996851,"sku":"CARRIE-PH2PEB048000AA-PRESSURE_SWITCH-HK02ZA395","price":90.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641471029619,"sku":"CARRIE-PH2PEB048000AA-PRESSURE_SWITCH-HK02ZA395-GEN","price":79.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK02ZA395_08576c67-76ea-4b33-92ef-6d547af157e7.jpg?v=1775033137","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph2peb048000aa-pressure-switch-jria74","provider":"National HVAC Parts","version":"1.0","type":"link"}