OEM Payne High & Low Pressure Switch for Model PA13NR030000ACAA

This OEM pressure switch is the factory-specified replacement for the Payne PA13NR030000ACAA air conditioning and heat pump system. The pressure switch monitors refrigerant pressure levels on both the high and low sides of the refrigerant circuit, protecting the compressor from damage caused by abnormal operating pressures. When either switch fails, the system will typically lock out on a fault code, refuse to start the compressor, or short-cycle repeatedly — leaving you with no cooling or heating until the faulty switch is replaced.

• Specs: Available as High Pressure Switch (OEM Part HK02ZA395) or Low Pressure Switch (OEM Part HK02ZB028) | Factory-calibrated cut-out/cut-in set points | Direct OEM replacement with correct pressure ratings for R-410A refrigerant systems | Spade terminal connector for plug-and-play installation
• OEM vs Generic: OEM pressure switches are factory-calibrated to exact cut-out and cut-in pressure thresholds for the PA13NR030000ACAA. Generic substitutes often use wider tolerances, risking compressor operation outside safe pressure limits and potentially voiding equipment warranties.
• Install Difficulty: 3/5 — Pressure switch replacement involves working near the refrigerant circuit. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter for continuity testing. Always disconnect power at the disconnect box before beginning. If refrigerant lines must be accessed, a licensed HVAC technician is required by law. Electrical connections only can typically be handled by a qualified DIYer.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. Orders placed before cutoff ship same business day from our warehouse.

Compatibility: Designed specifically for the Payne PA13NR030000ACAA 2.5-ton R-410A split-system heat pump/air conditioner. Verify which switch — high side (HK02ZA395) or low side (HK02ZB028) — is needed by checking your fault code or testing continuity across each switch before ordering. Not sure which one you need? Our HVAC parts specialists verify fitment before you buy — contact us today. In stock and ships today.