24
ZY120 1-3kVA User Manual EN rev.08.docx
loads will loss power.
28
Warn:
Bypass
frequency is out of
synchronous
range
Bypass frequency is
out of synchronous
range.
/
30
Warn:
Transfer
times over limit in 1
hour
Transfer
times
between inverter and
bypass is over 5 in
recent 1 hour. UPS
works in bypass mode.
Check if output is overload or some
loads are shorted. Remove the failure
loads and restart the UPS or wait for
starting inverter automatically.
32
Warn:
output
shorted
Something shorted
Please remove all loads from UPS
output. Check if UPS output is
shorted. If not, please check all loads.
34
Warn:
End
of
discharge
UPS works in battery
mode for long time
after utility failure. UPS
output will be off until
utility power is on.
Please save your data when UPS
alarm “utility fail”
47
Fault:
Rectifier
fault
Bus over voltage, bus
unbalance,
rectifier
starting failure, bus
under voltage, input
fuse is off
Please contact with distributer or
service center.
49
Fault: Inverter fault
Inverter over voltage,
inverter under voltage,
Please contact with distributer or
service center.
51
Warn: UPS over
temperature
Environment
temperature is higher
than permitted point,
ventilation is blocked
Please ensure that nothing blocks
ventilation and environmental temp
must be 0~40
C
53
Fault: Fan failure
One or more fans are
failure, fan wires are
loosen
Please contact with distributer or
service center
55
Warn:
Inverter
overload
Loads are on inverter
and over the capacity
Remove some loads to ensure that
total loads is under the capacity of the
