56
V01
Installation and Operating Instructions
11 Troubleshooting
When the PV system does not operate normally, we recommend the following
solutions for quick troubleshooting. If an error occurs, the red LED will light up. The
corresponding causes are described in Section 9.2 "Display Messages". The
corresponding corrective measures are as follows
：
Object
Error
code
Corrective measures
Presumable
Fault
38
•Check the PV array’s insulation to ground and make sure
that the insulation resistance to ground is greater than 1
MOhm. Otherwise, make a visual inspection of all PV cables
and modules.
• Make sure the grounding connection of the inverter is
reliable.
If this fault occurs often, contact the service.
36
• Make sure the grounding connection of the inverter is
reliable.
•Make a visual inspection of all PV cables and modules.
If this fault is still shown, contact the service.
6
• Check the open
-circuit voltages of the strings and make
sure it is below the maximum DC input voltage of the
inverter.
If the input voltage is within the permitted range and the
fault still occurs, it might be that the internal circuit has
broken. Contact the service.
37
• Check the open
-circuit voltages of the strings and make
sure it is below the maximum DC input voltage of the
inverter.
If the input voltage lies within the permitted range and the
fault still occurs, please call service.
41, 42
43, 44
45
• Disconnect the inverter from the grid and the PV array and
reconnect after 3 minutes.
If this fault is still being shown, contact the service.