Huawei NetCol8000-E220 User Manual page 174

NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual
Alar
m ID
A185
-01
A185
-01
A193
-01
A208
-01
A208
-01
Issue 06 (2020-08-19)
Alarm Alarm Name
Severit
y
WARNI Compressor 1
NG Insufficient
refrigerant
alarm
WARNI Compressor 2
NG Insufficient
refrigerant
alarm
MAJOR Air-side diff
pressure
sensor fault
MAJOR Indoor fan 1
blocked alarm
MAJOR Indoor fan 2
blocked alarm
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Probable Cause
1. Refrigerant has
leaked.
2. Refrigerant is not
charged as required
in the user manual.
3. The displayed
values of the liquid
pipe temperature
sensor or the
condensing pressure
sensor on the LCD
are different from
the actual values.
1. Refrigerant has
leaked.
2. Refrigerant is not
charged as required
in the user manual.
3. The displayed
values of the liquid
pipe temperature
sensor or the
condensing pressure
sensor on the LCD
are different from
the actual values.
1. The differential
pressure sensor
cable is loose or
damaged.
2. The pressure tube
of the differential
pressure sensor is
reversely connected.
3. The differential
pressure sensor is
faulty.
1. The fan blade is
stuck.
2. The fan is faulty.
1. The fan blade is
stuck.
2. The fan is faulty.
Solution
1. Check the system for
leaking points. If so,
repair the pipe and add
refrigerant.
2. Add refrigerant as
required in the user
manual.
3. Calibrate or replace
the liquid pipe
temperature sensor or
the condensing
pressure sensor.
1. Check the system for
leaking points. If so,
repair the pipe and add
refrigerant.
2. Add refrigerant as
required in the user
manual.
3. Calibrate or replace
the liquid pipe
temperature sensor or
the condensing
pressure sensor.
1. Check the cable
connection to the
differential pressure
sensor.
2. Check the tube
connection to the
differential pressure
sensor.
3. Maintain or replace
the differential
pressure sensor.
1. Clear the blockage.
2. Maintain or replace
the fan.
1. Clear the blockage.
2. Maintain or replace
the fan.
165