OEM Payne High & Low Pressure Switch for Model PA13NR060000ACAA

These OEM pressure switches — HK02ZA395 (High Pressure Switch) and HK02ZB028 (Low Pressure Switch) — are the factory-specified replacements for the Payne PA13NR060000ACAA split-system heat pump. Pressure switches monitor refrigerant-side pressures to protect the compressor and system from operating outside safe parameters. When either switch fails or trips, the system will lock out before completing a heating or cooling cycle, leaving you with no conditioned air and often a fault code on the control board.

• Specs: HK02ZA395 — High Pressure Switch, factory-calibrated trip point for R-410A high-side protection | HK02ZB028 — Low Pressure Switch, factory-calibrated trip point for R-410A low-side protection | Both rated for Payne PA13NR060000ACAA (5-ton, 13 SEER, single-stage R-410A)
• OEM vs Generic: OEM pressure switches are calibrated to exact factory trip-point specifications. Aftermarket units often carry wider tolerances that can allow the system to operate outside safe refrigerant pressure ranges, risking compressor damage over time.
• Install difficulty: 3/5 — Refrigerant pressure switches are located in the refrigerant circuit. Always recover refrigerant per EPA Section 608 regulations before replacement. Tools needed: manifold gauge set, refrigerant recovery machine, adjustable wrench, and a multimeter to confirm switch continuity before reinstallation.
• Warranty: 1-year OEM factory warranty on both HK02ZA395 and HK02ZB028. Orders ship same business day from our warehouse when placed before cutoff.

Compatibility: Both switches are designed specifically for the Payne PA13NR060000ACAA 5-ton single-stage R-410A split-system heat pump. Always verify your unit's data plate and existing switch markings before ordering to confirm the correct high or low side switch for your application. Need help confirming fitment? Our HVAC parts specialists are standing by — order with confidence and get your system back online fast.