Huawei NetCol8000-A045D - Page 258

Alarm ID Alarm Name Alarm
Severity
Possible Cause Solution
A28D-01 Compressor 1 low
suction pressure alarm
Compressor 2 low
suction pressure alarm
Major ● The refrigerant
leaks.
● The solenoid valve
is faulty.
● The pressure
displayed is
dierent from the
actual pressure.
● The
lter 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.
1. Identify and repair
the leaking point,
and rell
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
lter 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.
NetCol8000-A(045, 055, 060, 090, 120) In-room Air
Cooled Smart Cooling Product
User Manual 10 Alarm Reference
Issue 05 (2020-10-10) Copyright © Huawei Technologies Co., Ltd. 248