PowerWalker VFI 1000 TG Mode D'emploi page 31

8. Trouble Shooting
If the UPS system does not operate correctly, check the operating status on
the LCD display. The Warning code or fault code is shown in Warning&
Fault Code Table 6.1
If the UPS system does not operate correctly, please attempt to solve the
problem using the table below.
Warning
&
Fault Code
/ No indication, no
warning tone
even though
system is
connected to
mains power
supply
/ No
Communication
data
/ Emergency
supply period
shorter than
nominal value
FANF Fan fail
HIGH Battery over
voltage
Problem Possible cause
1)
2)
1)
2)
1)
2)
Fan abnormal
Battery is over
charged
-28-
No input 1)
voltage
Breaker open
2)
RS232 wire is 1)
not matched
USB wire is 2)
not matched
Batteries not 1)
fully charged
Batteries
defect
2)
Check if the fan is
running
Switching to battery
mode automatically,
Remedy
Check building
wiring socket
outlet and input
cable.
Check the Breaker
check or change
the RS232 wire
check or change
the USB wire
Charge the
batteries until the
Batteries are fully
charged
Change the
batteries or
consult your
dealer.