The NIBE Expansion Valve (Part No. 624403), also known as TLEX-E0839, is a genuine thermostatic expansion valve designed for use with R407C refrigerant systems. It is specifically compatible with the NIBE F2015 6 kW air-to-water heat pump model.

🔧 Product Overview

• Nibe Part Number: 624403

• Model: TLEX-E0839

• Refrigerant: R407C

• Valve Type: Thermostatic Expansion Valve (TXV)

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

✅ Compatibility

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

• NIBE F2015 6 kW

For other models or capacities, it's essential to verify compatibility before installation.

⚠️ 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.

• Fan Alarms: An improperly functioning expansion valve can cause abnormal system pressures and temperatures, leading to fan alarms.

• Sensor Position Alarms: Incorrect superheat levels due to valve issues can trigger sensor-related alarms, indicating potential faults in the system.

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