Abnormal external conditions
trigger the protection for the
inverter circuit inside the
SUN2000. The possible causes
are as follows:
Cause ID = 13
The grid voltage drops
dramatically or the power
grid is short-circuited,
which damages the internal
voltage detection circuit in
the SUN2000.
Cause ID = 14
The grid voltage drops
dramatically or the power
grid is short-circuited. As a
result, the inverter transient
output current exceeds the
upper threshold and
therefore the inverter
protection is triggered.
Cause ID = 16
The DC current in the
power grid exceeds the
upper threshold.
Cause ID = 20
The inverter output is
short-circuited. As a result,
the output current surges to
a value above the upper
limit, and the inverter
protection is triggered.
Cause ID = 13/14/16
1. The inverter detects its external working
conditions in real time. After the fault is
rectified, the SUN2000 automatically
recovers.
2. If the alarm occurs repeatedly, contact
Huawei technical support.
Cause ID = 20
1. Check the inverter output cable for
short-circuits.
2. If the alarm occurs repeatedly, contact
Huawei technical support.