Huawei LUNA2000-7-S1 User Manual page 110

LUNA2000-(7, 14, 21)-S1
User Manual
Alarm Alarm Name
ID
3066 Abnormal EN
Signal on
Battery
Expansion
Module
Issue 01 (2024-03-27)
Severity Possible Cause
Warning 1. The EN cable of the
battery expansion module
is connected to an incorrect
port.
2. The battery expansion
module is abnormal.
Copyright © Huawei Digital Power Technologies Co., Ltd.
7 ESS Maintenance
Suggestion
1. Turn off the inverter AC
output switch, inverter DC
input switch, and battery
DC switch, and wait for 5
minutes.
2. Check whether the EN
cable (terminal) is correctly
connected to the power
control module of
[Battery-1/2 Battery
expansion module-1/2/3].
Method for checking
terminal connections:
Connect battery expansion
modules to the power
control module one by one.
If all battery expansion
modules work properly, the
bottom terminals of one or
more battery expansion
modules are faulty. In this
case, exchange the
positions of the lowest
normal battery expansion
module and the battery
expansion module at the
bottom. If none of the
battery expansion modules
works properly, replace the
power control module.
Otherwise, replace the
faulty battery expansion
module/modules.
3. After checking that the
cables are correctly
connected, turn on the
battery DC switch, inverter
AC output switch, and
inverter DC input switch in
sequence.
4. If the alarm persists,
contact the vendor or
technical support.
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