OEM Carrier High Pressure Switch HK02ZA395 — 406/300 PSI for Model PY2PNB060090AA

This genuine OEM high pressure switch (part number HK02ZA395) is the factory-specified replacement for the Carrier PY2PNB060090AA packaged unit. The high pressure switch is a refrigerant-side safety device that continuously monitors system operating pressure. When discharge pressure exceeds the rated cutout threshold, the switch opens the control circuit, shutting down the compressor to prevent catastrophic damage. A failed or weak switch will cause nuisance high-pressure lockouts, compressor short-cycling, or — if it fails in the closed position — allow dangerous over-pressurization events that can permanently damage the compressor.

• Specs: Opens at 406 PSI | Closes at 300 PSI | 1/8" NPT male connection | 240 VAC | SPST normally closed | Compatible with R-22 and R-410A refrigerant systems
• OEM vs Generic: This is a genuine Carrier OEM switch manufactured to factory pressure tolerances. Aftermarket alternatives may carry looser cutout tolerances (±10–15 PSI), risking either nuisance trips or insufficient protection — both costly outcomes on a compressor.
• Install difficulty: 2/5 — System must be recovered and depressurized before switch removal. Tools needed: refrigerant recovery unit, manifold gauges, adjustable wrench, Schrader valve tool, thread seal tape. Always verify the replacement switch opens and closes at the rated PSI after installation.
• Warranty: 1-year OEM manufacturer warranty. In stock — ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PY2PNB060090AA. Also replaces legacy part numbers 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401, and HK02ZA435. Verify your unit's data plate refrigerant type and pressure ratings before ordering. Our HVAC parts specialists are available to confirm fitment — reach out before you order.