Maintenance
43
User Manual V1.3-2022-11-18
No. Fault Cause Solutions
27 '&$UF)DXOW
1. The DC terminal
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connected.
2. The DC cable is
broken.
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whether the cables are connected properly.
28
$)&,6HOIWHVW
Fault
$)&,GHWHFWLRQLV
abnormal.
'LVFRQQHFWWKH$&RXWSXWVZLWFKDQG'&LQSXW
switch, then connect them 5 minutes later.
Contact the dealer or the after-sales service if
the problem persists.
29
Cavity
2YHUWHPSHUDWXUH
1. The inverter is
installed in a
place with poor
ventilation.
2. The ambient
temperature
H[FHHGV
3. $IDXOWRFFXUVLQ
the internal fan
of the inverter.
1. Check the ventilation and the ambient
temperature at the installation point.
2. If the ventilation is poor or the ambient
temperature is too high, improve the
ventilation and heat dissipation.
3. Contact the dealer or after-sales service
if both the ventilation and the ambient
temperature are normal.
30 %862YHUYROWDJH
1. The PV voltage
is too high.
2. The sampling
of the inverter
BUS voltage is
abnormal.
'LVFRQQHFWWKH$&RXWSXWVZLWFKDQG'&LQSXW
switch, then connect them 5 minutes later.
Contact the dealer or the after-sales service if
the problem persists.
31
PV Input
2YHUYROWDJH
The PV array
FRQࢉJXUDWLRQLV
not correct. Too
many PV panels are
connected in series
in the PV string.
Check the serial connection of the PV array.
0DNHVXUHWKDWWKHRSHQFLUFXLWYROWDJHRIWKH
PV string is not higher than the maximum
operating voltage of the inverter.
32
PV Continuous
Hardware
2YHUFXUUHQW
1. The PV
FRQࢉJXUDWLRQLV
not proper.
2. The hardware is
damaged.
'LVFRQQHFWWKH$&RXWSXWVZLWFKDQG'&LQSXW
switch, then connect them 5 minutes later.
Contact the dealer or the after-sales service if
the problem persists.
33
PV Continuous
Software
2YHUFXUUHQW
1. The PV
FRQࢉJXUDWLRQLV
not proper.
2. The hardware is
damaged.
'LVFRQQHFWWKH$&RXWSXWVZLWFKDQG'&LQSXW
switch, then connect them 5 minutes later.
Contact the dealer or the after-sales service if
the problem persists.
34
String1 PV String
Reversed
The PV string
is connected
reversely.
Check whether the PV1 and PV2 strings are
connected reversely.
35
String2 PV String
Reversed