{"product_id":"carrier-fiop100b301ga-pressure-switch-jri7yl","title":"OEM Carrier High Pressure Switch HK02ZA442 for FIOP100B301GA","description":"\u003ch1\u003eOEM Carrier High Pressure Switch HK02ZA442 for Model FIOP100B301GA\u003c\/h1\u003e\u003cp\u003eThis OEM high pressure switch (part number \u003cstrong\u003eHK02ZA442\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier FIOP100B301GA\u003c\/strong\u003e packaged unit. The pressure switch is a critical safety device that monitors refrigerant or system pressure to confirm safe operating conditions before allowing the control board to advance through the heating or cooling sequence. When this switch fails or sticks open, the system will typically lock out before ignition, display a pressure switch fault code, or refuse to start despite the thermostat calling for operation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e High pressure switch | OEM part number HK02ZA442 | Factory-calibrated pressure set point | Direct drop-in replacement — no modification required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM pressure switches are calibrated to exact factory set-point tolerances. Aftermarket substitutes can drift out of spec, causing nuisance lockouts or, worse, failing to protect against genuine over-pressure conditions — a safety risk not worth taking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Difficulty: 2\/5\u003c\/strong\u003e — Disconnect power before servicing. Tools needed: flathead and Phillips screwdriver, needle-nose pliers, and a multimeter to verify continuity after installation. Always label and photograph existing wiring before disconnecting leads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty against defects. Orders placed before cutoff ship same business day from our climate-controlled warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Engineered specifically for the Carrier \u003cstrong\u003eFIOP100B301GA\u003c\/strong\u003e packaged unit. Verify the OEM part number HK02ZA442 against your unit's data plate or existing switch before ordering. Our parts specialists are available to confirm fitment — reach out before you order if you have any questions. \u003cstrong\u003eIn stock and ready to ship today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62909509337459,"sku":"CARRIE-FIOP100B301GA-PRESSURE_SWITCH-HK02ZA442","price":27.0,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62909509370227,"sku":"CARRIE-FIOP100B301GA-PRESSURE_SWITCH-HK02ZA442-GEN","price":19.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-single-HK02ZA442_3b1e8311-3626-4b73-a2ec-8345ba76e077.jpg?v=1782924865","url":"https:\/\/nationalhvacparts.com\/products\/carrier-fiop100b301ga-pressure-switch-jri7yl","provider":"National HVAC Parts","version":"1.0","type":"link"}