CPS SCH Series, Installation And Operation Manual

Page: 103 / 116

99
Table 6-6 Troubleshooting Fault Codes
FAULT CODES
Fault0130
(Bus over total voltage)
Recommended solutions:
1. Restart inverter by recycle both AC and DC
switches. Wait for 1 minute between OFF and
ON for all energy to discharge.
2. If inverter cannot clear fault, replace inverter.
Fault0110
(Bus imbalance)
Recommended solutions:
1. Raise limit of IDCmax (for example, 400mA) to
allow inverter more room to adjust in transient
condition to cope with imbalance of impedance
and voltage between Grid phases.
2. If after adjustment, alarm still occurs, replace
inverter.
Fault0100
(Grid relay fault)
Recommended solutions:
1. Restart inverter by recycle both AC and DC
switches. Wait for 1 minute between OFF and
ON for all energy to discharge.
2. If inverter cannot clear fault, replace inverter.
Fault0090
(Dynamic leakage current
high)
Check wires of PV and ground:
1. Turn OFF AC switch to disconnect inverter from
Grid.
2. Open fuse drawers to de-couple PV strings from
each other. Test strings with string test set.
3. Add one PV string at a time and start up inverter
to see if alarm occurs.
4. If there is no alarm, turn OFF AC switches to
disconnect from Grid and add in the next string.
Startup inverter again.
5. Continue until you can find the string that triggers
the alarm. Trace wirings of faulted string to find
any leakage to Earth Ground.
Fault0080
(Bus Hardware over current
fault)
Recommended solutions:
1. Restart inverter by recycling both AC and DC
switches. Wait for 1 minute between OFF and
ON for all energy to discharge.
2. If inverter cannot clear fault, replace inverter.