Bosch · Compress 7000 Heat Pumps
The local device has not received its EMS token from the EMS bus master for a certain amount of time. This indicates a break, disruption, or interference on the EMS bus connection.
Click steps to track your progress.
Check that all accessories connected to the EMS bus (room control, mixing module, etc.) are properly connected.
Inspect the EMS bus cable (GND) to ensure it is not in contact with the chassis, as this can cause interference.
If a 3.5 mm tele female connector is attached to the BBT port, ensure it is insulated from the chassis.