OEM Carrier High Pressure Switch HK02ZA395 — 406/300 PSI for Model PY2PEB060090NB

This is the genuine OEM high pressure switch (part number HK02ZA395) factory-specified for the Carrier PY2PEB060090NB packaged heat pump unit. The high pressure switch is a critical refrigerant-circuit safety device: it continuously monitors refrigerant discharge pressure and cuts power to the compressor when pressure exceeds safe limits, protecting your system from catastrophic compressor failure. When this switch fails — either stuck open or with a weakened diaphragm — you'll experience symptoms including nuisance high-pressure lockouts, compressor shutdowns on warm days, or a system that trips a fault code and refuses to restart without a manual reset.

• Specs: Opens at 395 PSI (406# rated) | Closes at 295 PSI (300# rated) | 1/8" NPT thread fitting | 240 VAC rated | Sensata PS80-03-0018 platform | Replaces: 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401, HK02ZA435, HK02ZA500, HK02ZA501
• OEM vs Generic: This is a genuine Carrier OEM part manufactured to exact factory pressure-trip tolerances. Aftermarket switches often have wider setpoint tolerances (±10–15 PSI), which can result in insufficient compressor protection or false lockouts — risking expensive compressor damage.
• Install difficulty: 3/5 — Refrigerant system work requires an EPA 608-certified technician. The refrigerant circuit must be recovered before replacing this switch. Tools needed: refrigerant recovery machine, manifold gauge set, adjustable wrench, leak detector, and wire terminals. Always verify system pressure with gauges after reinstallation.
• Warranty & Shipping: 1-year OEM factory warranty. In-stock units ship same business day from our warehouse. Free shipping on qualifying orders.

Compatibility: Engineered as a direct OEM replacement for the Carrier PY2PEB060090NB packaged heat pump system. Always verify the PSI setpoints on your unit's existing switch and the data plate before ordering. Our fitment team is available to confirm compatibility before you buy — no guesswork required.