14
4.2 Fault code and solution
When the "
FAULT"
is longbright, and"
"
symbolon the UPS LCDflashes, the UPS is in fault
state. UPS automatically switches to the error status page(refer to 3.5) to observe the fault
code and makeappropriate processingaccordingto the following table.
Fault
code
Indication
Possible reasons
Treatment measures
1
Bus boosting soft-
starting fail
1. ACabnormal
2. Abnormal soft-starting
circuit of bus
Checkthe mains, if all normal,
please contact the supplier.
2
Bus over voltage
1. ACabnormal
2. Software processingerror
3. Bus capacitor failure
Checkthe mains, if all normal,
please contact the supplier.
3
Bus under voltage 1. City electricity is too low.
2. Software processingerrors
3. Bus capacitor failure
1. Please checkthe rectifier fan.
2. Clean the obstacles onthe air
duct of the rear panelof the UPS.
3. Check the loads.
4. If all of above do not work, please
contact the supplier.
7
Over temperature 1. Fan failure
2. The air duct on the rear
panel of the UPS is blocked;
3. Overload
4. NTCsensor abnormality or
abnormalwiring
5. Power componentIGBT is
damaged.
1. Please checkthe rectifier fan;
2. Clean the obstacles onthe air
duct of the rear panelof the UPS;
3. Check the loads;
4. If all of above do not work, please
contact the supplier.
8
Battery relay
short circuit
Relay RL1/RL3hardware
damaged
Please contact the supplier
9
Bus relay soft-
starting fail
1. City electricity abnormal
2. Bus soft-staringcircuit
abnormal
Please checkthe city electricity
power, if no abnormal, please
contact the supplier.
17
Inv soft-starting
fail
1. Some hardware of the
inverter is damaged;
2. The control panel fails.
Please contact the supplier.
18
Inv output over
voltage
1. Some hardware of the
inverter is damaged;
2. The control panel fail.
Please contact the supplier.
19
Inv output under
voltage
1. Some hardware of the
inverter is damaged;
2. The control panel fails.
Please contact the supplier.
20
Inv short circuit
1. Some hardware of the
inverter is damaged.
2. Output short circuit
1. Checkif the short circuit existson
the outputof UPS.
2. Checkif the load is short circuit.
3. If no abnormal,please contact
the supplier.
