{"product_id":"carrier-ph11ja036000aaaa-pressure-switch-jrhhvr","title":"OEM Carrier Pressure Switch 22#CLS\/7#OPN 50\" Leads — PH11JA036000AAAA","description":"\u003ch1\u003eOEM Carrier Pressure Switch HK02ZB038 — 22#CLS \/ 7#OPN, 50\" Leads for Model PH11JA036000AAAA\u003c\/h1\u003e\u003cp\u003eThis OEM Carrier pressure switch (part number \u003cstrong\u003eHK02ZB038\u003c\/strong\u003e) is the factory-specified replacement for the \u003cstrong\u003eCarrier PH11JA036000AAAA\u003c\/strong\u003e packaged heat pump unit. The pressure switch monitors the inducer motor's draft pressure through a rubber hose connected to the flue or condensate system. When sufficient negative pressure is confirmed, the switch closes and signals the control board to proceed with the ignition sequence. A failed pressure switch will cause the system to lockout before ignition — often displaying a fault code — and the unit will refuse to fire even if all other components are functioning correctly.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecs:\u003c\/strong\u003e Close setpoint: 22\" W.C. | Open setpoint: 7\" W.C. | Lead length: 50\" | OEM part number: HK02ZB038 | Cross-reference: PS80-02-F0074\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM vs Generic:\u003c\/strong\u003e This is the exact factory-matched pressure switch. OEM setpoints are calibrated to the precise draft requirements of the PH11JA036000AAAA inducer assembly. Aftermarket switches with loose W.C. tolerances can cause nuisance trips or, worse, fail to detect a true draft failure — a safety risk.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall difficulty: 2\/5\u003c\/strong\u003e — Disconnect power before servicing. Locate the inducer housing and identify the existing pressure switch. Disconnect the rubber hose and two wire terminals, then swap in the new switch. Tools needed: flathead screwdriver, needle-nose pliers, manometer (recommended for verification). Always check the hose for cracks or blockages before condemning the switch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year OEM manufacturer warranty against defects. In-stock and ships same business day from our warehouse.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for the \u003cstrong\u003eCarrier PH11JA036000AAAA\u003c\/strong\u003e packaged heat pump unit. Verify your unit's existing switch W.C. rating and lead length against your data plate before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you order for peace of mind.\u003c\/p\u003e","brand":"Carrier","offers":[{"title":"OEM","offer_id":62641976115571,"sku":"CARRIE-PH11JA036000AAAA-PRESSURE_SWITCH-HK02ZB038","price":57.95,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":62641976148339,"sku":"CARRIE-PH11JA036000AAAA-PRESSURE_SWITCH-HK02ZB038-GEN","price":50.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-pressure-switch-HK02ZB038_64aa9926-df4c-4fc6-b242-f22791e3a58d.jpg?v=1775037066","url":"https:\/\/nationalhvacparts.com\/products\/carrier-ph11ja036000aaaa-pressure-switch-jrhhvr","provider":"National HVAC Parts","version":"1.0","type":"link"}