OEM Carrier High Pressure Switch HK02ZA395 — 395/295 PSI for Model PY2PNB048130AA

This genuine OEM Carrier high pressure switch (part number HK02ZA395) is the factory-specified refrigerant-side safety device for the Carrier PY2PNB048130AA packaged unit. The high pressure switch continuously monitors refrigerant discharge pressure and cuts power to the compressor if system pressure exceeds the safe threshold. When this switch fails or trips, you'll typically see the system lock out on a high-pressure fault, the compressor shutting down within minutes of startup, or a system that won't run at all despite normal thermostat demand.

• Specs: Opens at 395 PSI | Closes at 295 PSI | 1/8" NPT thread connection | 240 VAC rated | Sensata PS80-03-0018 platform | Also known as HK02ZA395A
• OEM vs Generic: This is a genuine Carrier OEM part manufactured to exact factory pressure set points. Aftermarket switches frequently carry wider tolerances on trip pressure, risking either nuisance lockouts or — more dangerously — failure to protect the compressor at true overpressure conditions.
• Install difficulty: 2/5 — Always recover refrigerant and depressurize the system before disconnecting the switch. Tools needed: refrigerant recovery unit, manifold gauge set, adjustable wrench, multimeter. Verify the switch is the root cause (not a dirty coil or low airflow) before replacement. EPA 608 certification required for refrigerant handling.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Direct OEM replacement for Carrier PY2PNB048130AA packaged units. Also replaces legacy part numbers: 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401, HK02ZA435, HK02ZA500, and HK02ZA501. Always verify your unit's data plate refrigerant type and system pressures match before installation. Questions about fitment? Our HVAC parts specialists confirm compatibility before you order.