Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.
OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
This genuine OEM high pressure switch (part number HK02ZA395) is the factory-specified refrigerant safety switch for the Carrier PY2PNB060130AB packaged unit. The high pressure switch continuously monitors refrigerant system pressure on the high side of the refrigeration circuit. When pressure climbs above a safe threshold — due to a dirty condenser coil, blocked airflow, failed condenser fan motor, or refrigerant overcharge — the switch opens to cut compressor power and prevent catastrophic compressor failure. When it fails or trips repeatedly, you'll see the system going into lockout, compressor short-cycling, or a non-responsive cooling call even when the thermostat is satisfied.
Compatibility: Designed and factory-matched for the Carrier model PY2PNB060130AB packaged unit. Verify refrigerant type and existing switch PSI ratings on your unit's data plate or wiring diagram before ordering. Our fitment team is available to confirm compatibility before you buy — no guesswork required.