Huawei NetCol5000-A025 - Page 230

Al
ar
m
ID
Alarm
Name
Ala
rm
Sev
erit
y
Impact Possible Causes Solution
a2
9
5
Outdoo
r fan
fault
MA
JOR
Generates
an alarm
and shuts
down the
compressor.
1. The
overtemperature
feedback cable
to the outdoor
fan is loose.
2. The outdoor unit
is dirty or
blocked.
3. The outdoor fan
is faulty.
4. The outdoor fan
drive is faulty.
1. Secure the
overtemperature
feedback cable.
2. Clear obstacles
from the outdoor
fan to ensure that
it works properly.
3. Replace the
outdoor fan.
4. Replace the
outdoor fan drive.
a2
9
6
EEV
low
superhe
at
degree
alarm
CRI
TIC
AL
Generates
an alarm
and shuts
down the
compressor.
1. The electronic
expansion valve
(EEV) coil is
loose.
2. The EEV coil is
faulty.
3. The cables to
the electronic
expansion valve
coil are loose or
damaged.
4. The EEV is
faulty.
5. The
dehumidication
solenoid valve
coil is faulty.
1. Reinstall the EEV
coil.
2. Replace the EEV
coil.
3. Check and
maintain the
cables to the EEV
coil.
4. Replace the EEV.
5. Maintain or replace
the
dehumidication
solenoid valve coil.
a2
9
7
The
main
control
module
is
faulty
CRI
TIC
AL
Generates
an alarm
and shuts
down the
compressor.
The main control
module is faulty.
Replace the main
control module.
NetCol5000-A025 In-row Air Cooled Smart Cooling
Product
User Manual (300 mm Width) 6 System Operation and Maintenance
Issue 15 (2020-12-10) Copyright © Huawei Technologies Co., Ltd. 220