PowerWalker Battery Pack for VFI 1000RT LCD - Manual (Page 34)

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8. Trouble Shooting
If the UPS system does not operate correctly, check the operating status on the LCD
display.
Warning String Fault String
Site fail SITE Inverter short SHOR
Fan fail FANF Overload fault OVLD
Battery over voltage (over charged) HIGH Inverter soft start fail ISFT
Battery low bLOW Bus soft start fail bSFT
Charge fail CHGF Over temperature fault OVTP
Inverter temperature high TEPH Inverter voltage low INVL
Ambient temperature high AMbH Inverter voltage high INVH
Battery open bOPN Bus voltage over bUSH
Overload OVLD Bus voltage Low bUSL
EPO EPO Bus voltage unbalance bUSE
Battery fault bATF Bus short bUSS
NTC open NTCO
If the UPS system does not operate correctly, please attempt to solve the problem
using the table below.
Problem Pzle 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
string ”STbY” in LCD,
even though the power
supply is available Inverter not switched on Press On-Switch “I”.
Display Mode
string ”bATT” 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.
Fan fail Fan abnormal Check if the fan is running
Battery over voltage Battery is over charged Stop charging to battery
automatically, and after the battery
voltage is normal and the mains is
normal, charge automatically again.