Huawei LUNA2000-200KWH-2H1 - Page 44

Alarm
ID
Alarm
Name
Alarm
Severit
y
Possible Cause Suggestion
3838 T/H
Sensor
Commu
nication
Failure
Minor Cause ID = 1
T/H sensor-1
communication failed.
1. Check whether the communication
cable is correctly connected to the
device. If not, connect the cable
correctly.
2. Check whether the power supply of
the device is normal. If not, contact
your technical support.
3839 Air
Conditio
ner
Commu
nication
Failure
Minor Cause ID = 1
HVAC-1
communication failed.
Cause ID = 2
HVAC-2
communication failed.
1. Check whether the communication
cable is correctly connected to the
device. If not, reconnect the cable
properly.
2. Check whether the power cable of the
device is loose. If yes, connect it
securely.
3. If the fault persists, contact your
technical support.
3840 CO
Sensor
Commu
nication
Failure
Minor Cause ID = 1
CO sensor-1
communication failed.
Cause ID = 2
CO sensor-2
communication failed.
1. Check whether the communication
cable is correctly connected to the
device. If not, connect the cable
correctly.
2. Check whether the power supply of
the device is normal. If not, contact
your technical support.
3841 H
2
Sensor
Commu
nication
Failure
Minor Cause ID = 1
H
2
sensor-1
communication failed.
1. Check whether the communication
cable is correctly connected to the
device. If not, connect the cable
correctly.
2. Check whether the power supply of
the device is normal. If not, contact
your technical support.
3842 ESC
Commu
nication
Failure
Minor Cause ID = 1
ESC-1 communication
fails.
1. Check whether the communication
cable is correctly connected to the
device. If not, reconnect the cable
properly.
2. Check whether the power cable of the
device is loose. If yes, connect it
securely.
3. If the fault persists, contact your
technical support.
LUNA2000-200KWH-2H1 Smart String ESS
Maintenance Manual 3 Alarm Reference
Issue 02 (2023-02-28) Copyright © Huawei Digital Power Technologies Co., Ltd. 38