OEM Carrier High Pressure Switch HK02ZA395 for Model PH1ZNA048000ABAA

This is the genuine OEM factory-specified high pressure switch for the Carrier PH1ZNA048000ABAA heat pump system. The high pressure switch (HK02ZA395) is a critical refrigerant-circuit safety device that monitors system discharge pressure and cuts power to the compressor if pressure exceeds safe operating limits. A failed or tripped high pressure switch will cause the system to lock out, display a fault code, or short-cycle — symptoms commonly misdiagnosed as a refrigerant, compressor, or control board issue. Also included in this listing is the companion low pressure switch HK02ZB044 (opens 7 PSI / closes 22 PSI, 50" leads), completing the full refrigerant-circuit pressure protection package for this model.

• Specs (HK02ZA395 — High Pressure Switch): Opens at 395 PSI | Closes at 295 PSI | 1/8" NPT thread | 240 VAC | PMAX 41B | Sensata PS80-03-0018 platform | Factory-certified OEM
• Specs (HK02ZB044 — Low Pressure Switch): Opens at 7 PSI | Closes at 22 PSI | 50" wire leads | 24V | Made in Mexico | OEM Carrier RCD
• OEM vs Generic: Genuine Carrier OEM switches are manufactured to exact cut-in/cut-out tolerances and carry full agency listings (EN12263, EN60730-2-6). Aftermarket substitutes frequently exhibit pressure drift, causing nuisance trips or — worse — failure to protect the compressor, leading to a costly compressor replacement.
• Install difficulty: 3/5 — Refrigerant-side work requires EPA 608 certification. Tools needed: manifold gauge set, adjustable wrench, wire terminals. Always recover refrigerant before disconnecting the high-side switch. Photograph all wiring before removal. Low-side switch replacement is less invasive but system must still be de-energized.
• Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse.

Compatibility: Engineered for Carrier model PH1ZNA048000ABAA heat pump systems. Cross-references: HK02ZA395 replaces 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401, HK02ZA435, HK02ZA500, HK02ZA501 and others. Verify OEM part numbers against your unit's wiring diagram or data plate before ordering. Order now and we'll ship it today.