PowerWalker VFI 1000 LE - Manual (Page 29)

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(2) Trouble shooting according to fault indication
LED
Possible cause Action
1 2 3 4 5 6
● ●
Output short
circuit
Remove all the loads. Turn off the
UPS. Check whether the output of
UPS and loads is short circuit.
Make sure the short circuit is
removed, and the UPS has no
internal faults before turning on
again.
● ●
Internal fault
(inverter failed) Contact the distributor or service
center.
● ● ●
Internal fault
(inverter relay
short)
Contact the distributor or service
center.
● ●
Overload
Check the loads and remove
some non-critical loads.
Check whether some loads are
failed.
● ● ●
Internal over
temperature
Check whether the UPS is
overloaded, the air vents are
blocked, and the ambient
temperature is over 40
℃
.
If the overload or block is
removed, please make the UPS
cool down for 10 minutes before
turning on again.
It is not recommended the UPS is
operated at the ambient
temperature of over 40
℃
.
● ● ●
Internal fault
(bus voltage
fault)
Contact the distributor or service
center.
● ● ● ●
Other internal
fault Contact the distributor or service
center.
●
: Lightened constantly