{"product_id":"carrier-py1ppb048130aaaa-pressure-switch-jria74","title":"OEM Carrier High Pressure Switch 395\/295 PSI for PY1PPB048130AAAA","description":"\u003ch1\u003eOEM Carrier High Pressure Switch HK02ZA395 — 395\/295 PSI for Model PY1PPB048130AAAA\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier high pressure switch (part number \u003cstrong\u003eHK02ZA395\u003c\/strong\u003e), factory-specified for the \u003cstrong\u003eCarrier PY1PPB048130AAAA\u003c\/strong\u003e packaged heat pump unit. The high pressure switch is a critical refrigerant-circuit safety device: it monitors system head pressure and opens the control circuit when pressure exceeds a safe threshold, cutting power to the compressor to prevent catastrophic damage. When this switch fails or trips — whether due to a refrigerant overcharge, blocked condenser coil, failing condenser fan motor, or a faulty switch itself — you'll typically see the system lock out on a high-pressure fault, short-cycle repeatedly, or shut down entirely without obvious cause.\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 thread connection | Rated 240 VAC | Sensata PS80-03-0018 platform | SPST (normally closed) | Cross-references: 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the genuine Carrier factory part — not an aftermarket substitute. OEM switches are calibrated to exact cut-out and cut-in pressure tolerances. Aftermarket switches frequently drift outside spec, causing nuisance trips or, worse, failing to protect the compressor under true high-pressure conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Recover refrigerant and depressurize the system before removing the switch. Tools needed: adjustable wrench or 1\" open-end wrench, thread-seal tape (use sparingly on NPT threads), refrigerant manifold gauge set to verify pressures post-install. Always confirm the replacement switch with your unit's wiring diagram before connecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered for the \u003cstrong\u003eCarrier PY1PPB048130AAAA\u003c\/strong\u003e packaged heat pump unit. Verify part number HK02ZA395 against your unit's data plate and parts diagram before ordering. Our team is available to confirm fitment — reach out before you buy if you have any questions, and we'll make sure you get the right part the first time.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62640790700403,"sku":"CARRIE-PY1PPB048130AAAA-PRESSURE_SWITCH-HK02ZA395","price":71.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62640790733171,"sku":"CARRIE-PY1PPB048130AAAA-PRESSURE_SWITCH-HK02ZA395-GEN","price":62.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK02ZA395_70429d98-3dd1-4d5c-92c8-d8ee637b1385.jpg?v=1775033242","url":"https:\/\/nationalhvacparts.com\/products\/carrier-py1ppb048130aaaa-pressure-switch-jria74","provider":"National HVAC Parts","version":"1.0","type":"link"}