OEM Carrier High Pressure Switch HK02ZA395 — 395/295 PSI for Model PY2PNB048115AB

This is the genuine OEM Carrier high pressure switch (part number HK02ZA395), factory-specified for the Carrier PY2PNB048115AB packaged unit. The high pressure switch is a critical refrigerant-circuit safety device that monitors system discharge pressure and shuts down the compressor when pressure exceeds safe operating limits. When this switch fails or trips, you'll typically experience nuisance high-pressure lockouts, a compressor that won't start, or fault codes indicating a high-pressure trip event on the control board.

• Specs: Opens at 395 PSI | Closes at 295 PSI | 1/8" NPT thread connection | 240 VAC rated | Sensata PS80-03-0018 / P332-1103 platform | Cross-references: 312926-217, 71267D1, HK02ZA380, HK02ZA396, 19240027
• OEM vs Generic: This is a genuine Carrier OEM part manufactured to exact factory pressure tolerances. Aftermarket substitutes often carry wider set-point tolerances, risking either nuisance trips or, worse, failure to protect the compressor at true high-pressure conditions — a costly mistake on a packaged unit.
• Install Difficulty: 2/5 — Always recover refrigerant and verify system pressure is at zero before replacing. Tools needed: refrigerant recovery unit, manifold gauges, adjustable wrench, multimeter. Photograph existing wiring before disconnecting. A certified HVAC technician is recommended for refrigerant-side work.
• Warranty: Backed by Carrier's OEM parts warranty. Ships same business day from our stocked warehouse.

Compatibility: Engineered as the direct OEM replacement for the Carrier PY2PNB048115AB packaged unit. Verify your unit's data plate and existing switch PSI ratings before ordering. Our HVAC parts specialists are available to confirm fitment — contact us before you buy if you're unsure. Order now and ship today!