OEM Carrier High Pressure Switch 395/295 PSI for Model PH1PEB048000AAAA

This OEM high pressure switch (part number HK02ZA395) is the factory-specified refrigerant-side safety control for the Carrier PH1PEB048000AAAA heat pump package unit. It monitors discharge-side refrigerant pressure and opens the circuit when pressure exceeds the factory set-point, cutting power to the compressor before catastrophic failure can occur. If your unit is tripping on high-pressure lockout, short-cycling, or displaying a fault code tied to high-side pressure, this switch is the most common culprit.

• Specs: Opens at 395 PSI | Closes at 295 PSI | 1/8" NPT male thread | 240 VAC rated | Sensata PS80-03-0018 platform | OEM part numbers: HK02ZA395 (primary) & HK02ZB044 (companion low-pressure switch)
• OEM vs Generic: OEM switches are manufactured to exact Carrier factory tolerances for cut-in/cut-out pressure setpoints. Off-spec generic switches can trip early (nuisance lockouts) or too late (compressor damage), neither of which is acceptable in a refrigerant safety circuit.
• Install Difficulty: 2/5 — Recover refrigerant per EPA 608 before removing the switch. Tools needed: refrigerant recovery machine, manifold gauge set, 1-1/16" open-end wrench, Teflon tape, multimeter. Always confirm system pressure is at zero before loosening the switch. Recheck for leaks after reinstallation.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Direct OEM replacement for Carrier PH1PEB048000AAAA packaged heat pump units. Cross-references include legacy part numbers 312926-217, 71267D1, HK02ZA380, and HK02ZA396. Verify your unit's data plate and existing switch markings before ordering — if you need the companion low-pressure switch, order HK02ZB044 separately. Questions about fitment? Our HVAC parts team confirms compatibility before you buy.