OEM Carrier High Pressure Switch 395/295 PSI — HK02ZA395 for Model PY2PPB036060AA

This OEM Carrier high pressure switch (part number HK02ZA395) is the factory-specified refrigerant circuit safety device for the Carrier PY2PPB036060AA packaged unit. The high pressure switch continuously monitors refrigerant discharge pressure on the high side of the refrigeration circuit. When pressure exceeds the rated cutout threshold — typically caused by a dirty condenser coil, failed condenser fan motor, refrigerant overcharge, or a blocked liquid line — the switch opens, sending a fault signal to the control board and shutting down the compressor to prevent catastrophic damage. Once the condition is corrected and pressure drops back to the close setpoint, the switch resets. Failure symptoms include nuisance high-pressure lockouts, system short-cycling with a fault code, or a compressor that won't run even after reset attempts.

• Specs: Opens at 395 PSI | Closes at 295 PSI | 240 VAC rated | 1/8" NPT male fitting | Sensata / Pressurestat series | Cross-reference: HK02ZA395A, PS80-03-0018, 406-300
• OEM vs Generic: This is a genuine Carrier OEM part manufactured to factory tolerance. Generic pressure switches often exhibit setpoint drift over time, leading to nuisance trips or — worse — failure to open at true overpressure, risking compressor failure.
• Install difficulty: 2/5 — Always recover refrigerant and confirm zero system pressure before removing the switch. Tools needed: refrigerant recovery machine, manifold gauge set, 1" open-end wrench, thread sealant (PTFE tape). Re-check system pressures and leak test the fitting after installation.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY2PPB036060AA packaged unit. Also replaces Carrier part numbers 312926-217, 71267D1, HK02ZA380, HK02ZA396, 19240027, and several other superseded variants — confirm your unit's data plate and existing switch markings before ordering. Have questions about fitment? Our HVAC parts specialists verify compatibility before you order — reach out today and ship same business day.