6: Troubleshooting
50
TS_604_01 PowerWave PW3000/TP User Manual UK 5/1/18
6.2
Fault identification and rectification
6.2.1 Troubleshooting without an error message
6.2.2 Troubleshooting based on error message
Display
Possible Cause
Remedy
No indication on LCD display.
No warning tone even though
system is connected to mains
power supply.
No input voltage
Check the building wiring and input cable.
Check that the external Input/bypass Isolator is
closed.
Bypass LED ON even if the power
supply is available.
Inverter not switched on
Press the
POWER-ON
key to turn on UPS and switch
to ‘on-line’ mode.
Battery LED ON and audible alarm
sounding
Input voltage and/or
frequency out of
tolerance
Check that the external Input/bypass Isolator is
closed
Check availability of input power source.
Check the building wiring and input cable.
Emergency supply period shorter
than nominal value
Batteries not fully
charged or defective
Charge the batteries for at least 12 hours and then
check capacity.
Display
Possible Cause
Remedy
Inv Overload Failure
Alarm code:42
Overload.
Check the loads / remove non-critical loads.
Check if some loads have failures.
Byp Overload Failure
Alarm code:43
Overload.
Check the loads / remove non-critical loads.
Check if some loads have failures.
Output short-circuit
Alarm code:31
Short circuited output.
Remove all the loads.
Turn off the UPS.
Check if UPS output and loads are short-circuited.
Ensure short circuit is removed before turning on the
system again.
Heatsink Over Temperature
Fault Alarm code:81
Inside temperature of
UPS
is too high.
Ensure the UPS is not overloaded, the air vents are not
blocked and the ambient temperature is not too high. Wait
for 10 minutes for the UPS to cool down before turning it
on again. If failed, contact the service centre.
DC BUS over-voltage
Alarm code:21
UPS internal fault.
Contact UPS supplier.
DC BUS under-voltage
Alarm code:22
UPS internal fault.
Contact UPS supplier.
DC BUS unbalanced
Alarm code:23
UPS internal fault.
Contact UPS supplier.
DC BUS softstart failure
Alarm code:25
UPS internal fault
Contact UPS supplier.
INV over-voltage
Alarm code:32
UPS internal fault.
Contact UPS supplier.
