PowerWalker VFI 1000T LCD User Manual
Page 31
28
Fault
Code
Bus fault
05
Inverter fault
06
Overload fault
07
Over temperature fault
08
Inverter short
14
Bus short
28
If the UPS system does not operate correctly, please attempt to solve the
problem using the table below.
Problem
Possible cause
Remedy
No indication, no
warning tone even
though system is
connected to mains
power supply
No input voltage
Check building wiring
socket outlet and input
cable.
Display Mode
code ”1” in LCD,
even though the
power supply is
available
Inverter
not
switched on
Press On-Switch “I”.
Display Mode
code ”3” in LCD, and
audible alarm
sounding every 1
beep in every 4
seconds
Mains power
supply has failed,
or Input power
and/or frequency
are out of tolerance
Switching to battery mode
automatically.
Check input power source
and inform dealer if
necessary.
Emergency supply
period shorter than
nominal value
Batteries not fully
charged / batteries
defect
Charge the batteries for at
least
5 - 8 hours and then check
capacity. If the problem still
persists, consult your
dealer.