{"product_id":"carrier-ph1peb036000aaaa-pressure-switch-jria74","title":"OEM Carrier High Pressure Switch HK02ZA395 for PH1PEB036000AAAA","description":"\u003ch1\u003eOEM Carrier High Pressure Switch HK02ZA395 \/ HK02ZB044 for Model PH1PEB036000AAAA\u003c\/h1\u003e\u003cp\u003eThis genuine OEM Carrier high pressure safety switch is the factory-specified replacement for the \u003cstrong\u003eCarrier PH1PEB036000AAAA\u003c\/strong\u003e heat pump system. The high pressure switch (HK02ZA395) monitors refrigerant pressure on the high side of the refrigerant circuit and acts as a critical safety device — cutting power to the compressor if system pressure exceeds safe operating limits. When it fails or sticks open, the result is a nuisance lockout, a system that won't cool or heat, or a compressor that trips on first start. The companion low pressure switch \u003cstrong\u003eHK02ZB044\u003c\/strong\u003e (opens at 7 PSI, closes at 22 PSI) is also listed here and protects against low-side refrigerant loss events such as leaks or severe undercharge.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Part (High Pressure):\u003c\/strong\u003e HK02ZA395 | Opens at 395 PSI | Closes at 295 PSI | 240 VAC rated | 1\/8\" NPT thread | Sensata PS80-03-0018 | Factory tolerance matched for R-410A systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecondary Part (Low Pressure):\u003c\/strong\u003e HK02ZB044 | Opens at 7 PSI | Closes at 22 PSI | 24V | 50\" lead length | Direct OEM drop-in replacement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM pressure switches are calibrated to exact factory cut-in\/cut-out set points. Aftermarket switches frequently deviate from set-point specs, risking either nuisance lockouts or — more critically — failure to protect the compressor at high pressure extremes, leading to catastrophic compressor failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 3\/5\u003c\/strong\u003e — Requires EPA 608 certification to work on the refrigerant circuit. Always recover refrigerant before replacing the high-pressure switch if it is wet-side mounted. Tools needed: manifold gauge set, refrigerant recovery unit, adjustable wrench, thread sealant. Verify the system is de-energized before disconnecting any wiring. Photograph all wiring and tubing connections before removal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty on both HK02ZA395 and HK02ZB044. Ships same business day from our warehouse when ordered by 3 PM local time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the \u003cstrong\u003eCarrier PH1PEB036000AAAA\u003c\/strong\u003e packaged heat pump unit. Cross-references for HK02ZA395 include: 312926-217, 71267D1, HK02ZA380, HK02ZA396, 19240027, HK02ZA400, 312926-225, 312926-226, HK02ZA401, HK02ZA435, HK02ZA500, HK02ZA501. Always confirm refrigerant type and system operating pressures against your unit's data plate before ordering. Our HVAC parts specialists are available to verify fitment — contact us before you order if you have any questions.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641658560883,"sku":"CARRIE-PH1PEB036000AAAA-PRESSURE_SWITCH-HK02ZA395","price":116.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641658593651,"sku":"CARRIE-PH1PEB036000AAAA-PRESSURE_SWITCH-HK02ZA395-GEN","price":102.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK02ZA395_55033c28-f437-4a80-86a4-745e41f34f94.jpg?v=1775033555","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph1peb036000aaaa-pressure-switch-jria74","provider":"National HVAC Parts","version":"1.0","type":"link"}