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This genuine OEM Carrier high pressure switch (part number HK02ZA395) is the factory-specified refrigerant-side safety device for the Carrier PY2PNB024060AC packaged unit. It continuously monitors refrigerant discharge pressure and opens the safety circuit when pressure exceeds safe operating limits — protecting the compressor from catastrophic over-pressure damage. When it fails or trips erroneously, you'll see repeated high-pressure lockout fault codes, nuisance trips on hot days, or a system that won't run at all despite normal operating conditions.
Compatibility: Engineered as a direct OEM replacement for Carrier PY2PNB024060AC packaged units. Also cross-references P/N 312926-217, 71267D1, HK02ZA380, HK02ZA396, and HK02ZA400 — verify your unit's existing PSI rating on the data plate or wiring diagram before ordering. Have a question about fitment? Our HVAC parts specialists confirm compatibility before you buy — reach out today and ship the same day.