Huawei NetCol8000-A045D User Manual page 236

NetCol8000-A(045, 055, 060, 090, 120) In-room Air
Cooled Smart Cooling Product
User Manual
Alarm ID Alarm Name
A044-01 Smoke sensor alarm
A046-01 Compressor 1
antifreeze protection
alarm
Compressor 2
antifreeze protection
alarm
Issue 05 (2020-10-10)
Alarm
Severity
Critical
Major
Copyright © Huawei Technologies Co., Ltd.
Possible Cause
● Smoke is generated
in the equipment
room.
● The cables to the
smoke sensor are
loose or damaged.
● The smoke sensor
is faulty.
● The refrigerant
leaks.
● The solenoid valve
is faulty.
● The value detected
by the pressure
sensor is different
from the actual
value.
● The filter dryer is
blocked.
● The expansion
valve is blocked or
stuck, or the
expansion valve coil
and cable
connections are
faulty.
● The indoor fan is
faulty.
● The ambient
temperature is
below the lower
threshold.
10 Alarm Reference
Solution
1. Expel smoke from
the equipment
room and reset the
smoke sensor.
2. Check the cables to
the smoke sensor.
3. Maintain or replace
the smoke sensor.
1. Identify and repair
the leaking point,
and refill
refrigerant after
maintenance.
2. Maintain or replace
the solenoid valve
coil or the solenoid
valve.
3. Calibrate or replace
the pressure sensor.
4. Maintain or replace
the filter dryer.
5. Maintain or replace
the expansion valve
or the coil, and
reconnect cables.
6. Maintain or replace
the indoor fan.
7. Measure the
ambient
temperature.
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