OEM Carrier High Pressure Switch HK02ZA395 — 406/300 PSI for Model PY1PEB060090AAAA

This is the genuine OEM factory-replacement high pressure switch (part number HK02ZA395) for the Carrier PY1PEB060090AAAA packaged unit. The high pressure switch is a critical refrigerant-side safety device: it continuously monitors system high-side pressure and opens the circuit to shut down the compressor if refrigerant pressure rises to a dangerous level — protecting the compressor, refrigerant circuit, and heat exchanger from catastrophic failure. A failed or faulty high pressure switch typically causes nuisance lockouts, compressor short-cycling, or a system that trips immediately on startup even when pressures are normal.

• Specs: Opens at 406 PSI | Closes (resets) at 295 PSI | Electrical rating: 6(6)A @ 240 VAC | Max pressure: 41 Bar (PMAX 41B) | Manufacturer: Sensata (PS80-03-0018) | OEM part: HK02ZA395 / HK02ZA395A
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part — not an aftermarket substitute. OEM pressure switches are calibrated to exact open/close pressure setpoints. Off-brand substitutes frequently drift from their rated setpoints, triggering false lockouts or — more dangerously — failing to trip at true high-pressure events.
• Install Difficulty: 3/5 — Refrigerant-side work requires EPA 608 certification. Safely recover or isolate refrigerant before disconnecting the switch from the high-side service port or line. Tools needed: refrigerant recovery unit, manifold gauge set, 1/4" flare wrench, multimeter (to confirm open/close across switch terminals before reinstall). Label and photograph wiring before disconnecting.
• Warranty & Shipping: Backed by a 1-year OEM factory warranty against defects. In stock and ships same business day from our warehouse — get your system back online fast.

Compatibility: Engineered as the exact OEM replacement for Carrier model PY1PEB060090AAAA. Also replaces legacy Carrier part numbers including 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401, HK02ZA435, HK02ZA500, and HK02ZA501 where pressure setpoints match. Always verify your unit's data plate and original part number before ordering. Our HVAC parts specialists are standing by to confirm fitment — contact us before you order if you have any questions.