Huawei LUNA2000-2.0MWH Series User Manual page 191

LUNA2000-2.0MWH Series Smart String ESS
User Manual
Alarm Alarm
ID Name
3817 Air
Condition
er
Condenser
Temperatu
re Sensor
Fault
3818 Air
Condition
er
Ambient
Temperatu
re Sensor
Fault
3819 Air
Condition
er
Evaporato
r Frozen
3820 Frequent
Air
Condition
er System
High
Pressure
Alarm
Issue 08 (2022-11-15)
Severity Possible Cause
Minor Cause ID = 1–13
1. The cable of [HVAC-
No] is not connected
securely or correctly.
2. The sensor is
damaged, open-
circuited, or short-
circuited.
Minor Cause ID = 1–13
1. The cable of [HVAC-
No] is not connected
securely or correctly.
2. The sensor is
damaged, open-
circuited, or short-
circuited.
Minor Cause ID = 1–13
1. The air intake or
exhaust of [HVAC-No] is
blocked.
2. The indoor fan is
faulty.
3. The cooling system
cannot be shut down in
a timely manner.
4. The evaporator
temperature sensor is
faulty.
Major Cause ID = 1–13
1. The condenser of
[HVAC-No] is blocked or
has scale.
2. The condenser fan is
faulty.
3. The external air flow
experiences a shortcut
or is blocked.
Copyright © Huawei Technologies Co., Ltd.
10 Alarm Reference
Suggestion
1. Shut down the system at a
proper time and take safety
measures.
2. Check whether the cable is loose.
3. Replace the condenser
temperature sensor.
1. Shut down the system at a
proper time and take safety
measures.
2. Check whether the cable is loose.
3. Replace the environment
temperature sensor.
1. Check whether the air intake or
exhaust vent of the CMU cabin is
blocked. If yes, clean it.
2. If the fault persists, contact your
technical support.
1. Clean the outdoor heat
exchanger.
2. Repair or replace the outdoor
fan.
3. Check whether there are
obstacles in front of the air or
exhaust vent of the outdoor fan.
4. If the fault persists, contact your
dealer or technical support.
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