OEM Carrier High Pressure Switch 395/295 PSI — HK02ZA395 for Model PY2PNB042060AB

This OEM high pressure switch (part number HK02ZA395) is the factory-specified refrigerant-side safety control for the Carrier PY2PNB042060AB packaged heat pump unit. The high pressure switch continuously monitors refrigerant discharge pressure and opens the circuit to shut down the compressor if pressure rises to an unsafe level. When it fails or trips permanently, the system will lock out on a high-pressure fault, short-cycle, or refuse to run the compressor altogether — symptoms often misdiagnosed as a refrigerant overcharge or a failed control board.

• Specs: Opens at 395 PSI | Closes at 295 PSI | 1/8" NPT thread connection | 240 VAC rated | SPST normally-closed contact | Sensata PS80 platform (OEM part HK02ZA395A)
• OEM vs Generic: This is a genuine Carrier OEM part manufactured to exact factory pressure setpoints (±2%). Aftermarket substitutes frequently carry wider tolerances that allow unsafe operating pressures, voiding equipment warranties and risking compressor damage.
• Install difficulty: 2/5 — Recover refrigerant and depressurize the system before removing the switch. Tools needed: refrigerant recovery machine, 1/8" NPT thread tape, adjustable wrench, multimeter (to confirm open/closed state). Always leak-check the port after reinstalling.
• Warranty: 1-year OEM factory warranty. In-stock orders ship same business day from our warehouse.

Compatibility: Designed for the Carrier PY2PNB042060AB packaged heat pump unit. Replaces superseded part numbers including 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401, HK02ZA435, HK02ZA500, and HK02ZA501. Verify your unit's data plate and existing switch pressure markings before ordering. Our fitment team is available to confirm compatibility before you purchase — order today for same-day shipping.