Troubleshooting; Before Troubleshooting; Common Faults And Troubleshooting - Sungrow PVS-24MH User Manual

8 Troubleshooting

8.1 Before Troubleshooting

Please notice the following items before troubleshooting:

Disconnect the load-break 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 load-break switch is switched off.

The fuse holders are still live after fuses are removed.

8.2 Common Faults and Troubleshooting

Indicator Faults
Fault
Neither "RX" nor "TX"
lights up.
"RX"
flashes
"TX" does not light
up.
"POWER" does not
light up.
36
Possible cause
RS485
communication fault
and
Incorrect address
No 5V output
switching
supply board
Method of correction
Refer to "5.4.4 Communication
Connections"
communication connection.
Refer to "5.6 Communication
Settings" to reset the address.
Check voltage on monitoring
unit +5V plug, which shall be
on
about 5V; otherwise switching
power
power supply board is faulty
and please contact us for
repair.
to check the