AEG PV 2000 operating instructions Trouble shooting, Display

26

8. Trouble shooting

System Fault

In most situations, the Protect PV inverter requires very little service. However, if Protect PV is not able to work perfectly, please refer to the following instructions before calling your local AEG PS dealer.

•Should any problems arise, the red (Fault) LED on the front panel turns on and the LCD displays the relevant information. Please refer to the following table for a list of potential problems and their solutions.

DISPLAY	Possible actions
	1.	Check the impedance is between PV (+) & PV (-) and the PV-
Isolation Fault		Inverter is earthed. The impedance must be greater than 8M
	2.	If the problem persists please call service
	1.	The ground current is too high.
	2.	Unplug the inputs from the PV generator and check the
Ground I Fault		peripheral AC system
	3.	After the cause is cleared, re-plug the PV panel and check
		PV-Inverter status.
	4.	If the problem persists please call service.
	1.	Wait for 5 minutes, if the grid returns to normal, PV-Inverter
Grid Fault		automatically restarts.
	2.	Make sure grid voltage and frequency meet the specifications
	3.	If the problem persists please call service
	1.	Grid impedance higher than the permissible value.
	2.	Wait for 5 minutes, see if it works again.
Impedance Fault	3.	Check the wires between the PV-Inverter and grid. Replace with
		larger wires if necessary.
	4.	Adjust impedance parameter by Protect PV Data program.
	5.	If the problem persists please call service
	1.	Grid is not connected.
No Utility	2. Check grid connection cables.
	3.	Check grid usability.