Operating instructions
42
Problem Possible cause Solution
During operation the 
alarm box transmits a 
short tone sequence.
Power failure Have the mains con-
nection checked by an 
approved electrician. See 
Safety notes, P. 6.
The PC does not detect 
the monitoring bracelet, 
or an error message ap-
pears on the PC.
No connection Check the connections 
(PC / USB cable / mag-
netic adapter / monitoring 
bracelet).
Reset the monitoring 
bracelet, see Calling the 
status / Clearing the alarm 
/ Resetting, P. 35.
Monitoring bracelet: 
The LEDs do not illumi-
nate.
The monitoring bracelet’s 
battery is discharged.
See Charging the monitor-
ing bracelet’s battery, P. 31
Monitoring bracelet: 
The green LED does not 
double ash in the water.
The monitoring bracelet 
does not detect water.
Clean the water contacts,
see Maintenance / Service, 
P. 41
Monitoring bracelet: 
Red double ashes.
Alarm being transmitted
(monitoring bracelet in 
the water).
See Alarm (active mode), 
P. 28.
Monitoring bracelet: 
Red ashes in triple time.
Alarm transmitted,
low battery.
See Alarm (active mode), 
P. 28.
Batterie laden, see Charg-
ing the monitoring brace-
let’s battery, P. 31.
Monitoring bracelet: 
Red or green ash or 
double ash.
Low battery
(monitoring bracelet in 
the water).
Charging the battery, see 
Charging the monitoring 
bracelet’s battery, P. 31.
Monitoring bracelet: 
Permanent red
Defective battery Contact a BlueFox dealer.










