{"product_id":"payne-pa1rja060000abwa-pressure-switch-jri7yl","title":"OEM Payne Pressure Switch HK02ZA442 \/ HK02ZB044 — PA1RJA060000ABWA","description":"\u003ch1\u003eOEM Payne Pressure Switch HK02ZA442 \/ HK02ZB044 for Model PA1RJA060000ABWA\u003c\/h1\u003e\u003cp\u003eThis OEM pressure switch is the factory-specified replacement for the \u003cstrong\u003ePayne PA1RJA060000ABWA\u003c\/strong\u003e packaged unit. The pressure switch monitors negative pressure created by the inducer motor to confirm safe draft before allowing the ignition sequence to proceed. When it fails — or when the diaphragm cracks and loses calibration — the furnace will lock out prior to ignition, often triggering a diagnostic fault code indicating a pressure switch fault. This listing covers two OEM part numbers: \u003cstrong\u003eHK02ZA442\u003c\/strong\u003e (High Pressure Switch) and \u003cstrong\u003eHK02ZB044\u003c\/strong\u003e (Pressure Switch), both factory-matched to this model's specific water column (W.C.) rating.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e OEM-calibrated W.C. rating factory-matched to PA1RJA060000ABWA | Single-port or dual-port configuration per original design | Replaces HK02ZA442 (High Pressure Switch) and HK02ZB044 (Pressure Switch) | Hose barb fitting sized to match original inducer port\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e OEM pressure switches are calibrated to exact W.C. specifications for this unit. Aftermarket substitutes frequently use wider tolerance ranges, causing nuisance lockouts in cold weather or altitude conditions — use OEM for reliable operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, and a multimeter to confirm switch continuity. Check the hose for cracks or moisture before replacing the switch, as a clogged condensate line or collapsed hose is a common root cause of pressure switch failure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM factory warranty. Orders ship the same business day from our stocked warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed specifically for the \u003cstrong\u003ePayne PA1RJA060000ABWA\u003c\/strong\u003e 5-ton packaged unit. Verify the W.C. rating printed on your existing switch before ordering to confirm which of the two OEM part numbers applies to your configuration. Our parts specialists are available to verify fitment before you purchase — no guesswork required.\u003c\/p\u003e","brand":"Payne","offers":[{"title":"OEM","offer_id":62908947300723,"sku":"PAYNE-PA1RJA060000ABWA-PRESSURE_SWITCH-HK02ZA442","price":43.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62908947333491,"sku":"PAYNE-PA1RJA060000ABWA-PRESSURE_SWITCH-HK02ZA442-GEN","price":38.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK02ZA442_94263b72-f011-4109-8e69-1005de6c787f.jpg?v=1780718576","url":"https:\/\/nationalhvacparts.com\/products\/payne-pa1rja060000abwa-pressure-switch-jri7yl","provider":"National HVAC Parts","version":"1.0","type":"link"}