OEM Carrier High Pressure Switch HK02ZA395 — 395 PSI Open / 295 PSI Close for Model PY1PPB048115NBAA

This OEM Carrier high pressure switch (part number HK02ZA395) is the factory-authorized replacement for the Carrier PY1PPB048115NBAA packaged unit. The high pressure switch is a critical refrigerant-circuit safety device: it monitors discharge-line pressure and opens the control circuit if pressure exceeds the rated setpoint, immediately shutting down the compressor to prevent catastrophic damage. When this switch fails or trips on nuisance faults, you'll typically experience repeated system lockouts, a compressor that shuts off on high-pressure fault codes, or a unit that won't restart without a manual reset.

• Specs: Opens at 395 PSI | Closes at 295 PSI | 240 VAC rated | PMAX 41B | Sensata / Factory Authorized Parts OEM manufacture | Certifications: CE, EN12263, ENEC05, EN60730-2-6
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part — not an aftermarket substitute. OEM switches are calibrated to exact factory PSI setpoints, ensuring your compressor protection is never compromised by tolerance drift common in off-brand alternatives.
• Install Difficulty: 3/5 — Refrigerant system work requires an EPA 608 certification. A licensed HVAC technician must recover refrigerant before replacing this switch. Tools needed: manifold gauge set, refrigerant recovery unit, wire strippers, and a multimeter to verify continuity after installation.
• Warranty: 1-year OEM factory warranty against defects. In-stock and ships same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for the Carrier PY1PPB048115NBAA packaged unit. This part also supersedes legacy ICP part numbers including 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401, HK02ZA435, HK02ZA500, and HK02ZA501. Always verify your unit's data plate and existing switch PSI rating before ordering. Our fitment team is available to confirm compatibility before you buy — order today and receive same-day shipping!