Huawei LUNA2000-2.0MWH-1H0 - Cluster Controller Alarms

Alar
m ID
Alarm
Name
Severit
y
Possible Causes Troubleshooting Suggestions
3813 Air
Condition
er AC
Overvolta
ge
Major Cause ID=1-13
1. The input voltage is
higher than the
overvoltage threshold.
2. The overvoltage
threshold setting is
improper.
3. The voltage test device
is faulty.
1. Check the voltage of the input
power supply. If the voltage is too
high, check the power distribution
device.
2. Check whether the overvoltage
threshold is correctly set. If not,
adjust it to a proper range.
3. Replace the voltage test device on
the control board.
4. If the fault persists, contact your
dealer or Huawei technical support.
3814 Air
Condition
er AC
Undervol
tage
Major Cause ID=1-13
1. The input voltage is
lower than the
undervoltage
threshold.
2. The undervoltage
threshold setting is
improper.
3. The voltage test device
is faulty.
1. Check the voltage of the input
power supply. If the voltage is too
low, check the power distribution
device.
2. Check whether the undervoltage
threshold is correctly set. If not,
adjust it to a proper value.
3. Replace the voltage test device on
the control board.
4. If the fault persists, contact your
dealer or Huawei technical support.
3815 Air
Condition
er AC
Power
Failure
Major Cause ID=1
1. The power supply
device is faulty or
disconnected.
2. The power supply
circuit is disconnected.
1. Check the voltage of the input
power supply and the power supply
device.
2. Check whether the power supply
circuit is abnormal.
3. If the fault persists, contact your
dealer or Huawei technical support.
3816 Air
Condition
er
Evaporat
or
Temperat
ure
Sensor
Fault
Minor Cause ID=1-13
1. The cable is not
connected securely or
correctly.
2. The sensor is
damaged, open-
circuited, or short-
circuited.
1. Check whether the cables are
securely and correctly connected
based on the circuit diagram.
2. Replace the temperature sensor.
3. If the fault persists, contact your
dealer or Huawei technical support.
LUNA2000-2.0MWH-1H0, 2H0 Smart String ESS
User Manual 10 Alarm Reference
Issue 02 (2021-11-15) Copyright © Huawei Technologies Co., Ltd. 137