42
09 Maintenance
User Manual V1.0-2022-05-10
No� Fault
Cause
Solutions
10
AFan Fail
A fault occurs in all
fans of the inverter. 1. Restart the inverter and check whether the
inverter can work normally.
2. Make sure that the fans are working properly and
not covered or blocked.
11
EFan Fail
A fault occurs on
the external fan of
the inverter.
12
IFan Fail
A fault occurs in
the internal fan of
the inverter.
1. Restart the inverter and check whether the
inverter can work normally.
2. A fault occurs in the internal fan, contact after-
sales service.
13
ARC Fault
The PV string
cables arc or are in
poor contact.
1. Check whether the PV terminals and cables are
connected properly.
2. Clear the error messages. Contact after-sales
service if the fault occurs frequently.
14
DC Bus High
Inverter internal
fault.
1. Make sure that the software version is the latest
one.
2. Restart the inverter to check whether the inverter
can work properly.
15
SPI Fail
16
Ref 1.5V Fail
17
AC HCT Fail
18
GFCI Fail
19
Relay Check
Fail
20
EEPROM
R/W Fail
