{"product_id":"carrier-ph1pna036000aaba-pressure-switch-jria74","title":"OEM Carrier High Pressure Switch 395\/295 PSI — PH1PNA036000AABA","description":"\u003ch1\u003eOEM Carrier High Pressure Switch 395\/295 PSI for Model PH1PNA036000AABA\u003c\/h1\u003e\u003cp\u003eThis genuine OEM high pressure switch (part number \u003cstrong\u003eHK02ZA395\u003c\/strong\u003e) is the factory-specified refrigerant safety switch for the \u003cstrong\u003eCarrier PH1PNA036000AABA\u003c\/strong\u003e packaged heat pump unit. Mounted in the high-side refrigerant circuit, it continuously monitors system discharge pressure and opens the safety circuit at \u003cstrong\u003e395 PSI\u003c\/strong\u003e, cutting power to the compressor before a dangerous over-pressure condition can cause catastrophic failure. The switch automatically resets when pressure drops back to \u003cstrong\u003e295 PSI\u003c\/strong\u003e. When this switch fails or trips repeatedly, symptoms include sudden compressor shutdown, high-pressure fault codes on the control board, and the system locking out after each cooling or heating cycle.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Opens at 395 PSI | Closes at 295 PSI | 1\/8\" NPT male fitting | 240 VAC rated | SPST normally-closed | Sensata PS80-03-0018 platform | Replaces HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401, 312926-217, 71267D1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM component manufactured to exact factory pressure setpoints. Generic aftermarket switches frequently have ±5–10% PSI tolerance variance, which can allow the compressor to operate in an unsafe pressure range or cause nuisance trips that damage the refrigerant circuit over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Refrigerant system access required. The system must be properly recovered before disconnecting the switch from the high-side port. Tools needed: manifold gauge set, refrigerant recovery equipment, adjustable wrench, PTFE\/refrigerant-rated thread sealant, and a multimeter to confirm switch continuity before re-commissioning. Always photograph wiring connections prior to removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered as a direct OEM replacement for \u003cstrong\u003eCarrier model PH1PNA036000AABA\u003c\/strong\u003e. Cross-references: 312926-217, 71267D1, HK02ZA380, HK02ZA396, 19240027, HK02ZA400, 312926-225, 312926-226, 312926-233, HK02ZA401, HK02ZA435, HK02ZA500, HK02ZA501. Always verify your unit's data plate and existing switch PSI markings before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641617535347,"sku":"CARRIE-PH1PNA036000AABA-PRESSURE_SWITCH-HK02ZA395","price":85.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641617568115,"sku":"CARRIE-PH1PNA036000AABA-PRESSURE_SWITCH-HK02ZA395-GEN","price":74.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK02ZA395_126a0bfc-8b9c-4992-be90-a7c0851c4ed9.jpg?v=1775033377","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph1pna036000aaba-pressure-switch-jria74","provider":"National HVAC Parts","version":"1.0","type":"link"}