Huawei NetCol8000-E220 User Manual page 156

NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual
Alar
m ID
A046
-01
A046
-01
Issue 06 (2020-08-19)
Alarm Alarm Name
Severit
y
MAJOR Compressor 1
antifreeze
protection
alarm
MAJOR Compressor 2
antifreeze
protection
alarm
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Probable Cause
1. The refrigerant
leaks.
2. The pressure
displayed is
different from the
actual pressure.
3. The filter dryer is
blocked.
4. The expansion
valve is blocked or
stuck, or the
expansion valve coil
and cable
connections are
faulty.
5. The indoor fan is
faulty.
6. The ambient
temperature is
below the lower
threshold.
1. The refrigerant
leaks.
2. The pressure
displayed is
different from the
actual pressure.
3. The filter dryer is
blocked.
4. The expansion
valve is blocked or
stuck, or the
expansion valve coil
and cable
connections are
faulty.
5. The indoor fan is
faulty.
6. The ambient
temperature is
below the lower
threshold.
Solution
1. Identify and repair
the leaking point, and
refill refrigerant after
maintenance.
2. Calibrate or replace
the pressure sensor.
3. Maintain or replace
the filter dryer.
4. Maintain or replace
the expansion valve or
the coil, and reconnect
cables.
5. Maintain or replace
the indoor fan.
6. Measure the
ambient temperature.
1. Identify and repair
the leaking point, and
refill refrigerant after
maintenance.
2. Calibrate or replace
the pressure sensor.
3. Maintain or replace
the filter dryer.
4. Maintain or replace
the expansion valve or
the coil, and reconnect
cables.
5. Maintain or replace
the indoor fan.
6. Measure the
ambient temperature.
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