OEM Carrier High Pressure Switch HK02ZA395 — 395/295 PSI for Model PY2PEB036090AA

This OEM high pressure switch (part number HK02ZA395) is the factory-specified refrigerant safety switch for the Carrier PY2PEB036090AA packaged unit. Manufactured by Sensata (PS80-03-0018), it monitors refrigerant discharge pressure on the high side of the refrigeration circuit. When pressure exceeds the cutout threshold, the switch opens to protect the compressor from catastrophic damage. A failed or stuck-open switch typically results in nuisance trips, compressor short-cycling, or a system that locks out immediately on startup with a high-pressure fault code.

• Specs: Opens at 395 PSI | Closes at 295 PSI | 6(6)A @ 240 VAC | 1/8" NPT fine-thread port | PMAX 41B | Sensata PS80 series | Cross-references: HK02ZA395A, PS80-03-0018, P332-1103, 312926-217, HK02ZA380, HK02ZA400, HK02ZA401, HK02ZA435
• OEM vs Generic: This is a genuine Carrier factory-authorized part. OEM pressure switches are calibrated to exact cutout/cut-in tolerances at the factory — generic aftermarket units often drift outside ±5 PSI spec, risking either false trips or — worse — inadequate compressor protection under true high-pressure events.
• Install difficulty: 3/5 — Refrigerant circuit work requires EPA 608 certification. Recover refrigerant before disconnecting the switch port. Tools needed: manifold gauge set, refrigerant recovery machine, adjustable wrench, thread sealant tape. Always confirm system pressure is zero before removal. Reconnect wiring with the correct quick-connect terminals and torque the port fitting to spec.
• Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered for Carrier PY2PEB036090AA packaged units. Also cross-references to numerous superseded Carrier, Bryant, and Payne part numbers — verify your existing switch's PSI cutout rating on the data plate or old switch body before ordering. Questions about fitment? Our HVAC parts specialists verify compatibility before you buy — contact us today.