OEM Carrier High Pressure Switch HK02ZA395 — 395/295 PSI for Model PY1PPB048115ABAA

This genuine OEM Carrier high pressure switch (part number HK02ZA395) is the factory-specified refrigerant-side safety control for the Carrier PY1PPB048115ABAA packaged unit. The switch continuously monitors refrigerant discharge pressure and interrupts the compressor circuit the moment system pressure exceeds the factory-set limit, protecting the compressor from catastrophic over-pressure damage. When this switch fails or trips without resetting, symptoms include a compressor that won't start, nuisance lockouts, or a system that shuts down shortly after calling for cooling.

• Specs: Opens at 395 PSI | Closes at 295 PSI | 1/8" NPT male port | Rated 6(6)A at 240 VAC | Sensata PS80-03-0018 platform | PMAX 41B certified
• OEM vs Generic: This is a genuine Carrier OEM switch, factory-calibrated to exact trip and reset pressures. Aftermarket substitutes can drift ±15 PSI from rated setpoints, risking either nuisance trips or — far worse — inadequate compressor protection on a hot day.
• Install difficulty: 2/5 — Always recover refrigerant before disconnecting the high-side line. Tools needed: refrigerant recovery machine, 1/8" NPT fitting wrench, multimeter (verify continuity at rest). Photograph existing wiring before removing. Torque to manufacturer spec to prevent port leaks.
• Warranty & Shipping: 1-year OEM manufacturer warranty against defects. Ships same business day from our warehouse. Replaces legacy part numbers: 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401, HK02ZA435, HK02ZA500, HK02ZA501.

Compatibility: Engineered for the Carrier PY1PPB048115ABAA packaged unit. Always verify the existing switch's PSI open/close setpoints against your unit's data plate or wiring diagram before ordering. Not sure it fits? Our HVAC parts specialists verify fitment before you buy — contact us before placing your order.