OEM Carrier High Pressure Switch HK02ZA395 — 395/295 PSI for Model PY1PEB048090ABAA

This is the genuine OEM Carrier high pressure safety switch (Part # HK02ZA395) factory-specified for the Carrier PY1PEB048090ABAA packaged heat pump unit. The high pressure switch is a critical refrigerant-circuit safety device that monitors system discharge pressure at all times. When refrigerant pressure rises to an unsafe level — due to a dirty condenser coil, failed condenser fan, refrigerant overcharge, or restricted airflow — the switch opens at 395 PSI and interrupts the compressor circuit to prevent catastrophic compressor failure. The circuit resets when pressure drops back to 295 PSI. Symptoms of a failed switch include nuisance high-pressure lockouts, fault codes on the control board, or a compressor that shuts down shortly after starting even when system pressures are normal.

• Specs: Open (cut-out) pressure: 395 PSI | Close (cut-in) pressure: 295 PSI | Electrical rating: 6(6)A @ 240 VAC | Connection: 1/8" NPT fine thread with quick-connect blade terminals | Manufactured by Sensata (PS80-03-0018), Carrier Factory Authorized Part
• OEM vs Generic: This OEM switch is calibrated to exact factory cut-out/cut-in tolerances. Generic switches often carry wider PSI tolerances that can allow over-pressure conditions to persist longer, risking compressor damage and voiding equipment warranties.
• Install Difficulty: 3/5 — Refrigerant circuit work requires an EPA 608 certified technician. The system must be fully recovered before replacing the switch. Tools needed: manifold gauge set, 1/8" NPT tap/fitting, leak detector, and refrigerant recovery equipment. Always verify system pressure after reinstallation before recharging.
• Warranty: 1-year OEM manufacturer warranty. Ships same business day from our warehouse when ordered before 3PM local time.

Compatibility: Direct OEM replacement for Carrier model PY1PEB048090ABAA. Also replaces legacy part numbers: 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401, HK02ZA435, HK02ZA500, and HK02ZA501. Verify the PSI rating on your existing switch before ordering. In stock and ready to ship — order now and get your system back online fast.