OEM Carrier High Pressure Switch 395/295 PSI for Model PY2PEB048090AB

This OEM Carrier high pressure switch (part number HK02ZA395) is the factory-specified safety control for the Carrier PY2PEB048090AB packaged unit. The high pressure switch monitors refrigerant circuit pressure on the high side and cuts out the compressor when a dangerous pressure spike is detected — protecting the compressor from catastrophic failure. When this switch fails or trips on a fault, symptoms include sudden compressor shutdown, system lockout codes, or a unit that short-cycles and fails to maintain setpoint. A faulty switch can also fail closed, masking an actual high-pressure condition and causing compressor damage.

• Specs: Opens at 395 PSI | Closes at 295 PSI | 1/8" NPT thread connection | 240 VAC rated | Sensata PS80-03-0018 OEM equivalent | Replaces: 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401
• OEM vs Generic: This is a genuine Carrier OEM switch manufactured to exact factory pressure setpoints (±2%). Aftermarket switches often carry wider tolerances, which can cause nuisance trips or, worse, fail to cut out at true danger thresholds — a critical difference in a safety-rated component.
• Install difficulty: 2/5 — Recover refrigerant and relieve system pressure before removing the switch. Tools needed: manifold gauge set, 7/8" wrench, multimeter, refrigerant recovery machine. Always verify pressure setpoints with gauges after reinstallation before restarting the system.
• Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PY2PEB048090AB packaged gas/electric unit. Verify the 395/295 PSI open/close rating against your unit's data plate and wiring diagram before ordering. Our parts team is available to confirm fitment — contact us before you buy if you have any questions.