Goodwe XS Series User Manual page 51

User Manual V1.1-2023-12-30
No. Fault
Low
Insulation
18
Res.(Earth
fault alarm)
Abnormal
19
Ground
Anti Reverse
20
power Failure
Internal
21
Comm Loss
Cause
1. The PV string is short-
circuited to PE.
2. The PV system is in a
moist environment and
the cable is not well
insulated to the ground.
1. The PE cable of
the inverter is not
connected well.
2. The L cable and N cable
are connected reversely
when output of the PV
string is grounded.
Abnormal fluctuation of
load
1. Frame format error
2. Parity checking error
3. Can bus offline
4. Hardware CRC error
5. Send (receive) control
bit is receive (send).
6. Transmit to the unit that
is not allowed.
Solutions
1. Check whether the resistance of the
PV string to PE exceeds 50kΩ. If no,
check the short circuit point.
2. Check whether the PE cable is
connected correctly.
3. If the resistance is lower on rainy
days, please reset the ISO.
Inverters for the Australian and New
Zealand markets can also be alerted
in the following ways in the event of
insulation impedance failure:
1. The inverter is equipped with
the buzzer: the buzzer sounds
continuously for 1 minute in case of
failure; If the fault is not resolved, the
buzzer sounds every 30 minutes.
2. Add the inverter to the monitoring
platform, and set the alarm reminder,
the alarm information can be sent to
the customer by emails.
1. Check whether the PE cable of the
inverter is connected properly.
2. Check whether the L cable and N
cable are connected reversely if
output of the PV string is grounded.
1. If the exception is caused by an
external fault, the inverter will recover
automatically after solving the
problem.
2. If the problem occurs frequently and
the PV station cannot work properly,
contact the dealer or the after-sales
service.
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.
47
Maintenance