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8.2 Fault Diagnosis / Fault Rectification
The PROTEC C. generates detailed error messages. Support
personal can localise and interpret faults quickly and
precisely. Search for the right method and solutions
recommendations referring to the errors according to chapter
8.1.1.
8.2.1 Error Messages
Problem Cause Solution
UPS does not start. No
indication, no warning tone
even though system is
connected to mains power
supply.
Mains and battery voltage
not in the tolerance range,
possible battery deep
discharge.
Check building wiring
socket outlet and input
cable.
LED “Line” blinks and
audible signal sounding
every 3 minutes.
(Error No. 14)
Phase and neutral
conductor at input of UPS
system are reversed.
Rotate mains power
socket by 180° or
connect UPS system.
LED “Line” blinks and LED
“Battery” lights up.
Input power and/or
frequency are out of
tolerance.
Check input power
source (Voltage,
frequency) and inform
house electrician if
necessary.
LED “Inverter” and LED
“Battery” lights up, and
audible signal sounding
every 4 seconds.
LED “Inverter” and LED
“Battery” lights up, and
audible signal sounding
every seconds.
(Battery state No. 12/13)
Mains power supply has
failed. Automatic switch to
battery mode.
Try to replace mains
supply (possibly
triggered fuse in sub-
distribution). When
audible signal sounding
every second, battery
is almost empty. At this
point it is time to
proceed with an system
shutdown of all your IT
equipment.
LED “Fault” lights, warning
tone once a second.
(Error No. 12/13)
Overload of the UPS
system.
Reduce utilizations of
UPS by removing loads
of UPS output.