Name: Relay Card
Part Number: 718418
Description:
This relay board is designed to manage high-voltage switching and relay functions for various outdoor Nibe air source heat pump models in the F20** series.

It plays a vital role in controlling electrical loads such as compressors, circulation pumps, or immersion heaters — depending on system configuration.

✅ Compatible Nibe Units

F-Series Air Source Heat Pumps

• F2300 – all kW variants
  (commonly available in 6, 8, 9, 14, and 20 kW models)

• F2026 – all kW variants
  (typically available in 6, 8, 9, and 11 kW models)

• F2016 – all kW variants
  (typically 6 and 8 kW models)

🔧 Technical Notes

• Functionality:
  Used to interface the control board with external high-power components safely. Enables load switching that may be beyond the capacity of the main control PCB.

• Installation Location:
  Typically found in the electrical compartment of the unit — often mounted adjacent to or integrated with the terminal block and contactor setup.

• Troubleshooting Tip:
  If the system is not activating auxiliary heating or outdoor compressor control relays, a faulty relay card like this one could be the cause.