Huawei LUNA2000-200KWH-2H1 User Manual page 164

LUNA2000-200KWH-2H1 Smart String ESS
User Manual
Alarm Alarm
ID Name
3818 Air
Conditio
ner
Ambient
Temper
ature
Sensor
Fault
3819 Air
Conditio
ner
Evapora
tor
Frozen
3820 Frequen
t Air
Conditio
ner
System
High
Pressure
Alarm
Issue 03 (2023-03-30)
Alarm Possible Cause
Severit
y
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 Digital Power Technologies Co., Ltd.
Suggestion
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. Check whether the outdoor heat
exchanger is blocked by dirt. If yes,
clean it using a high-pressure water
gun.
2. Check whether the outdoor fan is
running properly. If not, replace it.
3. Check whether the air intake or
exhaust vent of the outdoor fan is
blocked. If yes, clean the air intake or
exhaust vent.
4. If the fault persists, contact your
technical support.
13 Alarm Reference
155