Huawei LUNA2000-2.0MWH Series - Page 196

Alarm
ID
Alarm
Name
Severity Possible Cause Suggestion
3838 T/H
Sensor
Communic
ation
Failure
Minor Cause ID = 1–5
T/H sensor
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 supply
of the device is normal. If not,
contact your technical support.
3839 Air
Condition
er
Communic
ation
Failure
Minor Cause ID = 1–13
[HVAC-No]
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 the cable securely.
3. If the fault persists, contact your
technical support.
3840 CO Sensor
Communic
ation
Failure
Minor Cause ID = 1–6
CO sensor
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 supply
of the device is normal. If not,
contact your technical support.
3842 ESC
Communic
ation
Failure
Minor Cause ID = 1–6
ESU 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 the cable securely.
3. If the fault persists, contact your
technical support.
3843 TCU
Communic
ation
Failure
Minor Cause ID = 1, 2
TCU communication
failed.
1. Turn o the TCU power switch.
2. Check whether the
communication cable is correctly
connected to the device. If not,
reconnect the cable properly.
3. Check whether the power supply
of the device is normal. If not,
contact your technical support.
3844 Rectier
Communic
ation
Failure
Minor Cause ID = 1
Rectier communication
failed.
LUNA2000-2.0MWH Series Smart String ESS
User Manual 10 Alarm Reference
Issue 08 (2022-11-15) Copyright © Huawei Technologies Co., Ltd. 186