09 Maintenance
User Manual V1.0-2023-10-30
75
No.
Fault
Cause
Solutions
1
Parallel
system
CAN com
-
munication
abnormal
The parallel commu-
nication cables’ con-
nection is abnormal,
or any inverter in the
parallel system is not
powered on.
Check if all inverters are powered on and if the parallel
communication cables are securely connected.
Multiple inverters parallel system
No. Fault
Cause
Solutions
50
External fan
abnormal
Possible cause
of external fan
abnormal:
1.The power
supply to the fan is
abnormal;
2.Mechanical failure
(blocked rotation);
3.Fan aging
damage.
Disconnect the AC output switch and DC input
switch, then connect them 5 minutes later.
Contact the dealer or the after-sales service if
the problem persists.
9.5 Routine Maintenance
Maintaining Item
Maintaining Method
Maintaining Period
System Clean
Check the heat sink, air intake, and air outlet
for foreign matter or dust.
Once 6-12 months
DC Switch
Turn the DC switch on and off ten
consecutive times to make sure that it is
working properly.
Once a year
Electrical Connection
Check whether the cables are securely
connected. Check whether the cables are
broken or whether there is any exposed
copper core.
Once 6-12 months
Sealing
Check whether all the terminals and ports
are properly sealed. Reseal the cable hole if
it is not sealed or too big.
Once a year