Troubleshooting - AEG PRotEct PV 4600 Operating Instructions Manual

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8. tRoUbleshooting

tRoublEshooting youR PV-inVERtER
fault
mEssagE
Isolation Fault
Ground I Fault
Grid Fault
Impedance Fault
No Utility
The PV-Inverter requires little maintenance. When unexpected situation
occurs, please refer to the following table. If the table is insufficient,
please call your local dealer.
The following table lists common fault messages that display, if the fault
LED is lit, and their solutions.
diagnosis and solution
1. Check the impedance between PV (+) & PV (-) and ground. The
impedance should be larger than 8 Mohm.
2. If the check fails, or the impedance is below 8 Mohm, please
call the service.
1. This is caused by too high ground current.
2. Unplug the PV panels from the DC-input, check the AC peri-
pheral system.
3. After the cause is cleared, plug PV panels in again and check
the status of inverter.
4. If above actions cannot clear Ground I fault, please call service.
1. Wait for 1 minute for grid to come back to normal.
2. Make sure Grid voltage and Frequency meet the specifications.
3. If not, please call service.
1. Grid impedance higher than the permissible value.
2. Observe the faulty condition for 1 minute.
3. If it does not restore to normal, check the wires between
inverter and grid. If necessary, replace with wires with bigger
cross-section.
4. Adjust impedance parameter using the Protect PV EZ control.
5. If above actions are vain, please call service.
1. Grid is not connected.
2. Check grid connection, wires and plugs.
3. Check grid usability