CPS SCA36KTL-DO/US-480 - Page 132

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Table 7-7 LCD Troubleshooting FAULT
Type
Error/State
Fault Description / Instruction
Fault
Fault0020
(Bus over
volt
Hardware)
1. Restart inverter by turning both AC and
DC switches OFF. Wait for 5 minutes for
all energy to discharge and turn both
switches ON
2. If inverter cannot clear fault, replace
inverter
Fault0060
(CPLD Fault)
1. Restart inverter by turning both AC and
DC switches OFF. Wait for 1 minute for
all energy to discharge and turn both
switches ON
2. If inverter cannot clear fault, replace
Control Board or inverter
Fault0080
(Bus Hardware
overcurrent
fault)
1. Restart inverter by turning both AC and
DC switches OFF. Wait for 1 minute for
all energy to discharge and turn both
switches ON
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 holders to isolate PV strings.
Test strings with meter
3. Add one PV string and start inverter to
see if alarm occurs.
4. If no alarm, turn OFF AC switches to
disconnect from grid and add in the next
string. Start inverter again.
5. Continue until the string that triggers the
alarm is identified. Trace back the faulted
string to find any leakage to Earth Ground.
Fault0100
(Grid relay
fault)
1. Restart inverter by turning both AC and
DC switches OFF. Wait for 5 minutes for
all energy to discharge and turn both
switches ON
2. If inverter cannot clear fault, replace
inverter
Fault0110
(Bus
imbalance)
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