Connection error and triangle symbol — Problem with connection to programming unit

What does Connection error mean?

The display shows a 'Connection error' message along with a triangle symbol, indicating an issue with the cable or plug connecting the heat management unit (HMU) and the programming unit (HMI).

• Connecting cable between HMU and HMI faulty
• Plug between HMU and HMI loose or faulty

Click steps to track your progress.

1. 1

   Check the connecting cable between the heat management unit and the programming unit.

2. 2

   Ensure the plug is fully and securely connected.

3. 3

   If the error persists after checking connections, contact a qualified technician.