OEM Carrier High Pressure Switch HK02ZA395 — 395/295 PSI for Model PY2PPB036090AA

This OEM high pressure switch is the factory-specified refrigerant safety component for the Carrier PY2PPB036090AA packaged unit. Mounted directly in the high-side refrigerant circuit, it continuously monitors compressor discharge pressure and opens the control circuit when pressure exceeds the factory cutout threshold — protecting the compressor from catastrophic over-pressure damage. When this switch fails or trips repeatedly, you'll see symptoms including nuisance high-pressure lockouts, compressor short-cycling, or a system that trips on a call for cooling with no obvious refrigerant fault.

• Specs: Opens at 395 PSI | Closes at 295 PSI | 1/8" NPT refrigerant port | 240 VAC rated | Sensata PS80-03-0018 platform | OEM part number HK02ZA395
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part manufactured to exact cutout pressure tolerances (±2%). Aftermarket substitutes frequently exhibit pressure drift, leading to premature compressor trips or — more dangerously — failure to open under true over-pressure conditions.
• Install difficulty: 3/5 — Refrigerant circuit work. System must be recovered before replacing this switch. Tools needed: refrigerant recovery machine, manifold gauge set, 1/8" NPT fitting wrench, leak detector. Always verify system charge after reinstallation. Licensed technician recommended.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Engineered for Carrier model PY2PPB036090AA. Also replaces legacy part numbers 312926-217, 71267D1, HK02ZA380, and HK02ZA396 where pressure specifications match. Confirm cutout ratings on your unit's data plate before ordering. Our fitment team is available to verify compatibility — contact us before you buy.