Huawei NetCol8000-A013 User Manual page 102

NetCol8000-A013 In-room Air Cooled Smart Cooling
Product
User Manual (600 mm Width)
Alarm Alarm Name
ID
301 EEV Low
Superheat Degree
Alarm
302 EEV Low
Superheat Lock
Alarm
303 EEV Drive Alarm
304 EEV Drive Lock
Alarm
Issue 02 (2020-11-09)
System Possible Causes
Action
The 1. The EEV is faulty or
compressor
shuts down.
2. The cables to the
3. The EEV coil is
4. The plug of the EEV
5. The plug of the EEV
6. The outdoor
The The EEV Low
compressor Superheat Alarm is
shuts down. triggered multiple
(The alarm times within a
needs to be specified period of
manually time.
cleared.)
The 1. The EEV is not
compressor
shuts down.
2. The EEV coil is
3. The EEV drive circuit
The The EEV Drive Alarm is
compressor triggered multiple
shuts down. times within a
specified period of
time.
Copyright © Huawei Technologies Co., Ltd.
5 System Operation and Maintenance
its step is incorrect.
EEV are not properly
connected.
loose.
is loose.
is short-circuited.
temperature sensor
displays an incorrect
temperature or is
faulty.
connected.
short-circuited.
of the indoor unit
main control board
is faulty.
Solution
1. Check and replace
the EEV.
2. Check and replace
the EEV body.
3. Secure the EEV coil.
4. Secure the plug.
5. Eliminate the short-
circuit fault.
6. Adjust or replace
the outdoor
temperature sensor.
Refer to the solution to
the EEV Low Superheat
Alarm.
1. Check the cables to
the EEV.
2. Check whether the
EEV coil is short-
circuited.
3. Replace the main
control board of the
indoor unit.
Refer to the solution to
the EEV Drive Alarm.
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