OEM Carrier High Pressure Switch HK02ZA395 / HK02ZB044 for Model PH2PNB060000AA

This genuine OEM Carrier high pressure switch (part number HK02ZA395, with companion switch HK02ZB044) is the factory-specified refrigerant circuit protection device for the Carrier PH2PNB060000AA packaged heat pump unit. The high pressure switch monitors refrigerant discharge pressure on the high side of the refrigerant circuit. When system pressure exceeds the factory-set threshold — typically caused by a dirty condenser coil, failed condenser fan motor, overcharge, or a blocked refrigerant circuit — the switch opens to protect the compressor from catastrophic damage. Symptoms of a failed switch include nuisance high-pressure lockouts, a system that trips off on warm days but not cool ones, or a compressor that won't engage after a manual reset.

• Specs: Opens at 395 PSI | Closes at 295 PSI | Rated 6(6)A @ 240 VAC | PMAX 41B | 1/8" NPT thread | Sensata PS80-03-0018 platform
• OEM vs Generic: This is a genuine Carrier OEM part manufactured to exact factory pressure setpoints. Aftermarket switches frequently deviate ±10–15% from rated trip pressure, risking either nuisance lockouts or — worse — inadequate compressor protection under true over-pressure conditions.
• Install Difficulty: 3/5 — Refrigerant circuit must be recovered before replacing the high-side pressure switch. Tools needed: manifold gauge set, refrigerant recovery machine, 1/8" NPT wrench, leak detector. Recommended for certified HVAC-R technicians (EPA 608 required for refrigerant handling).
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Direct OEM replacement for the Carrier PH2PNB060000AA packaged heat pump. Also replaces legacy part numbers 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401, HK02ZA435, HK02ZA500, and HK02ZA501. Always verify refrigerant type and system operating pressures against your unit's data plate before ordering. Our fitment team is available to confirm compatibility before you purchase.