Sungrow SunBox PVS-8M, Руководство пользователя

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7 Troubleshooting
This chapter gives the basic troubleshooting methods for customer as a reference.
7.1 Before troubleshooting
Please notice the following items before troubleshooting:

Disconnect the DC switch before operation.

Please do not touch the bare metal parts of the copper bar under the protection
plate.

Pull the fuse holder for maintenance of the combining busbar and to disconnect
the input cable.

High voltage still exists after DC breaker is switched off.

The fuse holders are still live after fuses are removed.
7.2 Common faults and troubleshooting
Fault Possible cause Method of correction
On the monitoring
unit, neither “RX” nor
“TX” lights up.
RS485 communication
fault
Check communication line.
Refer to
“4.4 Communication
address settings”.
On the monitoring
unit, “RX” flashes and
“TX” does not light up.
Incorrect address
Use dip switch to set address
again.