{"product_id":"carrier-ph1rpa090000aawb-pressure-switch-jrhhrg","title":"OEM Carrier Low Pressure Switch 7#OPN 22#CLS for PH1RPA090000AAWB","description":"\u003ch1\u003eOEM Carrier Low Pressure Switch HK02ZB044 — 7 PSI Open \/ 22 PSI Close for Model PH1RPA090000AAWB\u003c\/h1\u003e\u003cp\u003eThis is the genuine OEM Carrier low pressure switch (part #HK02ZB044) factory-specified for the \u003cstrong\u003eCarrier PH1RPA090000AAWB\u003c\/strong\u003e packaged heat pump unit. The pressure switch is a critical safety and proving device in the refrigerant circuit: it monitors system pressure and interrupts operation if pressure falls outside the designed range. When this switch fails or sticks open, the unit will typically enter a lockout condition, refuse to stage into heating or cooling, or short-cycle immediately after startup — symptoms that are often misdiagnosed as a refrigerant or control board issue.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Opens at 7 PSI | Closes at 22 PSI | 50\" wire leads | 24V control circuit | Manufactured in Mexico to OEM design tolerances\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is a genuine Carrier OEM part. OEM pressure switches are calibrated to exact cut-in\/cut-out setpoints. Aftermarket alternatives often carry wider tolerances that can cause nuisance trips, erratic system behavior, or premature failure — particularly in variable-load packaged units like the PH1RPA090000AAWB.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Shut off all power to the unit at the disconnect before beginning. Tools needed: 1\/4\" nut driver or 5\/16\" wrench, needle-nose pliers, and a multimeter for continuity verification. Photograph or label existing wire positions before disconnecting. The 50\" leads provide ample routing flexibility. No soldering required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. In-stock units ship same business day from our warehouse when ordered before cutoff.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed as a direct OEM replacement for the \u003cstrong\u003eCarrier PH1RPA090000AAWB\u003c\/strong\u003e packaged heat pump. Verify your unit's data plate and existing switch setpoints (7# open \/ 22# close) before ordering to ensure correct fitment. Our HVAC parts specialists are available to confirm compatibility before you buy — no guesswork, no return hassle. Order today and get it shipped fast.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641551114611,"sku":"CARRIE-PH1RPA090000AAWB-PRESSURE_SWITCH-HK02ZB044","price":95.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641551147379,"sku":"CARRIE-PH1RPA090000AAWB-PRESSURE_SWITCH-HK02ZB044-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-HK02ZB044_02dbc5fa-3659-4ce5-a0e0-b6366bd4ae79.jpg?v=1775036391","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph1rpa090000aawb-pressure-switch-jrhhrg","provider":"National HVAC Parts","version":"1.0","type":"link"}