The NIBE Expansion Valve (Part No. 624934), also known as TLEX-E0580, is a genuine thermostatic expansion valve designed for use with R407C refrigerant systems. It is specifically compatible with a range of NIBE ground source heat pump models.

🔧 Product Overview

• Nibe Part Number: 624934

• Model: TLEX-E0580

• Refrigerant: R407C

• Valve Type: Thermostatic Expansion Valve (TXV)

• Function: Regulates the flow of refrigerant into the evaporator, ensuring optimal system performance and efficiency.

This valve is engineered to manage the refrigerant flow rates required by various NIBE heat pump models, ensuring stable operation and energy efficiency.

✅ Compatibility

This expansion valve is compatible with the following NIBE heat pump models:

• NIBE F1100 – 7 kW & 8.5 kW

• NIBE F1110 – 5 kW & 7 kW

• NIBE F1115 – 5 kW & 7 kW

• NIBE F1127 – 8 kW

• NIBE F1130 – 8 kW

• NIBE F1200 – 7 kW & 8.5 kW

• NIBE F1210 – 5 kW & 7 kW

• NIBE F1215 – 5 kW & 7 kW

• NIBE F1225 – 8 kW

• NIBE F1230 – 8 kW

• NIBE F1250

• NIBE F1255 – 16 kW

These models are part of NIBE's ground source heat pump range, designed for residential applications.

⚠️ Common Faults Associated with Expansion Valve Issues

Malfunctions or failures of the expansion valve can lead to several operational issues, often indicated by system alarms:

• Low-Pressure (LP) Alarms: May result from the valve failing to regulate refrigerant flow correctly, causing inadequate system pressure.

Regular maintenance and timely replacement of the expansion valve are crucial to prevent these issues and ensure optimal heat pump performance.