Name: Relay Card for F2020 Series
Part Number: 718419
Function:
This relay board handles high-power switching operations such as controlling compressors, immersion heaters, and circulation pumps in various Nibe heat pump systems.

It acts as an intermediary between the low-voltage control signals and the high-voltage components, enabling safe and reliable operation.

✅ Compatible Nibe Units

F-Series Ground and Air Source Heat Pumps

• Nibe F2015 – all kW variants

• Nibe F2025 – all kW variants

• Nibe F1115 – all kW variants

• Nibe F1125 – all kW variants

• Nibe F2020 – all kW variants

These systems span both air-to-water and ground source heat pumps, with this relay card designed to fit across the relevant models’ electrical architecture.

🔧 Technical Notes

📌 Key Functions

• Enables safe electrical load switching (e.g., 3-phase elements)

• Works in tandem with system controls to activate heating stages, compressor control, or immersion heating

⚠️ Troubleshooting Symptoms

• Heating not activating despite controller demand

• No relay click during operation

• Tripping circuit breakers or blown fuses may suggest board failure

🛠️ Installation Tips

• Mounted within the electrical cabinet or rear terminal area

• Power must be fully isolated before working on or replacing the card

• Check terminal labels and board-specific connectors during replacement