OEM Carrier High Pressure Switch 395/295 PSI — HK02ZA395 for Model PY2PPB060090AB

This is the genuine OEM Carrier high pressure safety switch (part number HK02ZA395), factory-specified for the Carrier PY2PPB060090AB packaged unit. The high pressure switch is a critical refrigerant-circuit safety device that monitors discharge-side pressure and cuts power to the compressor the moment system pressure exceeds a safe threshold. When this switch fails or trips, you'll typically experience nuisance lockouts, a compressor that won't run, or fault codes indicating a high-pressure trip — symptoms that can be caused by a faulty switch even when actual refrigerant pressures are normal.

• Specs: Opens at 395 PSI | Closes at 295 PSI | 1/8" NPT male thread connection | 240 VAC rated | SPST normally-closed contact | Sensata PS80-03-0018 (OEM equivalent)
• OEM vs Generic: This genuine Carrier OEM switch is factory-calibrated to exact cut-out and cut-in pressures. Aftermarket substitutes often carry wider pressure tolerances, increasing the risk of nuisance trips or — more dangerously — failure to protect the compressor from a true high-pressure event.
• Install Difficulty: 2/5 — Recover all refrigerant before removing the switch; this is an EPA 608-required procedure. Tools needed: manifold gauge set, adjustable wrench, refrigerant recovery machine. Always confirm system pressure is at zero before disconnecting. Photograph wiring before removal.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier PY2PPB060090AB packaged units. Also replaces legacy part numbers: 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401, HK02ZA435, HK02ZA500, HK02ZA501. Verify your unit's data plate before ordering. Have a fitment question? Our HVAC parts specialists confirm compatibility before you buy.