Huawei SUN2000 Series User Manual page 107

SUN2000-(196KTL-H0, 200KTL-H2, 215KTL-H0)
Series
User Manual
Alarm Alarm Name
ID
2088 Abnormal DC
protection unit
2093 Abnormal DC
Switches
Issue 07 (2021-07-08)
Alarm Cause
Severity
Major ● Cause ID = 1
The fuse is not in
position or is blown.
● Cause ID = 2
The two relays on the
breaking board are
open-circuited.
● Cause ID = 3
DC switch contact
sticking.
Minor Cause ID=1
The DC switch is not in
the ON position, or the
DC switch reset button is
not pressed down to the
bottom.
Copyright © Huawei Technologies Co., Ltd.
8 Maintenance
Troubleshooting Suggestions
● Cause ID = 1/2
Turn off the AC output
switch and DC input switch,
and then turn them on
after 5 minutes. Wait for
the inverter to connect to
the power grid. If the alarm
persists after 5 minutes,
contact your dealer or
Huawei technical support.
● Cause ID = 3
If the PV indicator (LED1) is
off, contact your dealer or
Huawei technical support to
replace the device. If the PV
indicator (LED1) is on, wait
until the PV string current
decreases to below 0.5 A.
Then turn off the AC output
switch and then the DC
input switch. After 5
minutes, turn on the AC
output switch and the DC
input switch. Wait until the
inverter connects to the
power grid. If the fault
persists 5 minutes later,
contact your dealer or
Huawei technical support.
Check whether all DC switches
are in the ON position. If not,
turn the switches to the ON
position (you can rotate the
switches with force to ensure
that they are in position). If
the switches still cannot be
turned to the ON position,
press the reset buttons of all
DC switches inwards until they
cannot be moved further, and
then turn on the DC switches
again.
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