OEM Carrier High Pressure Switch HK02ZA395 — 395/295 PSI for Model PY2PNB024060NB

This OEM high-pressure safety switch is the factory-specified replacement for the Carrier PY2PNB024060NB heat pump and air conditioning system. Mounted on the refrigerant circuit, this switch continuously monitors system high-side pressure and cuts power to the compressor if pressure exceeds the safe threshold — protecting your compressor from catastrophic failure. A failed or faulty high-pressure switch will typically trigger nuisance lockouts, trip a fault code on the control board, or cause the system to shut down immediately after startup even when refrigerant charge and airflow are normal.

• Specs: Opens at 395 PSI | Closes at 295 PSI | 1/8" NPT thread fitting | 240 VAC rated | Sensata PS80-03-0018 platform | SPST normally closed
• OEM vs Generic: This genuine Carrier OEM switch is factory-calibrated to exact cut-in/cut-out tolerances. Aftermarket substitutes often carry wider pressure tolerances (±5–10%), risking either nuisance trips or, worse, inadequate compressor protection at elevated pressures.
• Install Difficulty: 2/5 — Requires EPA 608 certification to handle refrigerant. Recover refrigerant before replacing. Tools needed: manifold gauge set, 1/8" NPT fitting wrench, leak detector, multimeter. Always verify the new switch continuity before recharging.
• Warranty: 1-year OEM factory warranty against defects. Ships same business day from our stocked warehouse.

Compatibility: Direct OEM replacement for Carrier model PY2PNB024060NB. Also supersedes legacy part numbers 312926-217, 71267D1, HK02ZA380, HK02ZA396, HK02ZA400, HK02ZA401, HK02ZA435, HK02ZA500, and HK02ZA501. Verify thread size and PSI ratings on your unit's data plate before ordering. Need fitment confirmation? Our HVAC parts specialists will verify compatibility before you buy — order now and get it shipped today.