Huawei NetCol8000-A045D User Manual page 248

NetCol8000-A(045, 055, 060, 090, 120) In-room Air
Cooled Smart Cooling Product
User Manual
Alarm ID Alarm Name
A185-01 Compressor 1
insufficient refrigerant
alarm
Compressor 2
insufficient refrigerant
alarm
A193-01 Air-side diff pressure
sensor fault
A208-01 Indoor fan 1 blocked
alarm
Indoor fan 2 blocked
alarm
A220-01 Wizard startup is in
progress
Issue 05 (2020-10-10)
Alarm
Severity
Warning
Major
Major
Warning
Copyright © Huawei Technologies Co., Ltd.
Possible Cause
● Refrigerant has
leaked.
● Refrigerant is not
charged as required
in the user manual.
● The displayed
values of the liquid
pipe temperature
sensor or the
condensing
pressure sensor on
the LCD are
different from the
actual values.
● The expansion
valve is blocked or
stuck, or the
expansion valve coil
and cable
connections are
faulty.
● The cable to the
differential pressure
sensor is loose or
damaged.
● The pressure tube
of the differential
pressure sensor is
reversely
connected.
● The fan blade is
stuck.
● The fan is faulty.
Wizard startup is in
progress.
10 Alarm Reference
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.
4. Maintain or replace
the expansion valve
or the coil, and
reconnect cables.
1. Check the cable
connection to the
differential pressure
sensor.
2. Check the tube
connection to the
differential pressure
sensor.
1. Clear the blockage.
2. Maintain or replace
the fan.
Wait until wizard
startup is complete or
clear the alarm
manually to exit
wizard startup.
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