45
User Manual V1.1-2022-07-20 09 Maintenance
No. Fault Cause Solutions
25 GFCI Chk Fail
The sampling of
the GFCI HCT is
abnormal.
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.
26 SPD Failure
The inverter is
struck by lightning.
3. Improve the lightning protection facilities
around the inverter.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.
27
DC Switch
Fail
The tripping times
of the DC trip
switch exceeds the
limit.
Please contact your dealer or after-sale service.
28
Ref-V Chek
Fail
The reference
circuit is faulty.
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.
29 HCT Chk Fail
The AC sensor
is abnormal in
sampling.
30 PID Error
1. The system
grounding is
abnormal.
2. The PID module
is abnormal.
1. Check whether the DC connecting and AC
connecting cables are abnormal.
2. Check whether the PID module is abnormal.
3. Contact your dealer or after-sales service.
31 CPLD Error
1. Temporary
abnormality
is caused by
environmental
factors.
2. Internal
components of
the inverter are
damaged.
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.
32 PV over Curr 1. The PV module
conguration is
not reasonable.
2. The hardware is
damaged.
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.
34
PV soft
OverCurr
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