🔧 Nibe 618425 High Pressure Switch (C.O 29 bar / C.I 22 bar)

The Nibe 618425 High Pressure Stat is a critical pressure safety component used in Nibe heat pump systems. It ensures the refrigeration circuit is protected by cutting out the compressor if system pressure rises above safe operating limits. 

🧾 Technical Specifications:

• Nibe Part Number: 618425

• Type: High Pressure Switch / Pressure Safety Stat

• Cut-Out Pressure (C.O): 29 bar

• Cut-In Pressure (C.I): 22 bar

• Function: Monitors refrigerant circuit pressure and disables compressor if max pressure exceeded

• Mounting: Brazed 

✅ Compatible With:

Air Source Heat Pumps:

• Nibe F2015 – various kW models

• Nibe F2025 – various kW models

Ground Source Heat Pumps:

• Nibe F1130 – various kW models

• Nibe F1135 – various kW models

• Nibe F1215 – 4 kW

• Nibe F1225 – 5 kW

• Nibe F1230 – various kW models

• Nibe F1235 – various kW models

• Nibe F1330 – various kW models

🛠️ Typical Use Cases:

• Compressor protection 

• Post-fault replacement after LP/HP alarm events

• Used in refrigeration leak repairs and system rebuilds

⚠️ Engineer’s Tip:

If the system is locking out on high-pressure alarms, check filter blockages, pumps, 3 way vales, air in system, sensor placement or refrigerant overcharge before replacing the stat.