OEM Carrier High Pressure Switch HK02ZA395 — 395/295 PSI for Model PY1PJB048115ABAA

This is the genuine OEM factory-replacement high pressure switch for the Carrier PY1PJB048115ABAA packaged heat pump unit. The high pressure switch is a critical refrigerant-circuit safety device: it continuously monitors discharge-side refrigerant pressure and trips the compressor off when system pressure reaches an unsafe level, protecting the compressor from catastrophic failure. When this switch fails or drifts out of spec, you'll typically see nuisance high-pressure lockouts, compressor short-cycling, or a unit that trips off on a warm day even with proper refrigerant charge. A faulty switch can also mask real overpressure conditions, putting the compressor at risk.

• Specs: Opens at 395 PSI | Closes at 295 PSI | Rated 6(6)A at 240 VAC | PMAX 41 Bar | Sensata PS80-03-0018 platform | 1/8" NPT refrigerant port connection
• OEM vs Generic: This is a genuine Carrier factory-authorized part (Sensata-manufactured). OEM switches are calibrated to exact trip-point tolerances critical for compressor protection. Generic alternatives often carry wider tolerances that can allow real overpressure events to go undetected.
• Install Difficulty: 2/5 — Recover refrigerant before replacing. Tools needed: refrigerant recovery unit, manifold gauge set, adjustable wrench, and leak-detection solution. Always verify system pressure is at zero before removing the old switch. Recharge to manufacturer spec after installation.
• Warranty & Shipping: 1-year OEM manufacturer warranty against defects. In stock — ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PY1PJB048115ABAA. This part also supersedes legacy part numbers 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401, HK02ZA435, HK02ZA500, and HK02ZA501. Always verify discharge-line port size and PSI trip points on your unit's data plate before ordering. Need help confirming fitment? Our HVAC parts specialists verify compatibility before you buy — contact us today.