Error Type
Display
Possible Causes
Communications Loss
Comms failure
•
Unplugged cable from load bank to hand-held.
•
Damaged cable.
Wrong Voltage (if dual voltage is fitted)
Wrong voltage
•
Voltage applied is too high for selected voltage - ensure
voltage is correct.
Over Voltage
Over voltage
•
Voltage applied is too high for the load bank.
Low airflow (if fitted)
Air fail
•
Check that the fan is not obstructed and that it is free to
rotate.
Motor Overload
Motor Overload
•
Check that the fan is not obstructed and that it is free to
rotate.
•
Check the motor current and overload setting.
Over Temperature “1”
Over temp failure
•
Allow the load bank to cool and reset over temperature
trip.
•
Check that the airflow through load bank is unobstructed.
•
Check for any signs of hot air re circulation.
•
Check all fans and filters on the load bank are
unobstructed.
Supply line error
Supply line error
•
Error in supply connection, check wiring according to
single phase connection mode.
5 - 6
Sigma LT Hand-Held Display
As well as the Sigma LT digital toggle display messages and errors will also appear on the
hand-held. The hand-held will show load bank specific and overall network messages.
Figure 5-2
The Sigma LT Hand-held error display
Sigma LT Hand-held - Error Messages
Chapter Five
Note:
When the hand-
held is connected,
errors will display on
the hand-held only and
not on the digital toggle
control panel.
Error Type
Display
Possible Causes
Data logging file open failure
Log open failed
•
USB flash drive corrupted or unreadable.
•
USB port damaged.
•
Unplugged USB.
Data logging file write failure
Log write failed
•
USB flash drive corrupted or unreadable.
•
USB port damaged.
•
Unplugged USB.
Internal Software Error
Comms failure
•
Software fault. Please contact our support team.
5 - 7
Maintenance & Troubleshooting
Display
Possible Causes
Network search
Network search
•
Searching network for load banks
Load bank detected
Load bank detected
•
New load bank has been found in the network
Other Messages
