Component
Alarm Name
Alarm
Severit
y
Possible Cause
Measures
Comp LP switch
Major
1. The refrigerant leaks.
2. The solenoid valve is
faulty.
3. The cables to the LP
Switch are loose or
damaged.
4. The LP Switch is
damaged.
5. The dryer filter is
blocked.
6. The expansion valve
is blocked.
7. The indoor fans are
faulty.
1. Check for any
leakages. Fill
refrigerant after
maintenance or
replacement.
2. Maintain or replace
the solenoid coil or
the solenoid valve.
3. Check the cables to
the LP Switch.
4. Calibrate or replace
the LP Switch.
5. Maintain or replace
the dryer filter.
6. Maintain or replace
the expansion valve.
7. Maintain or replace
the indoor fans.
Comp LP switch
lock
Critical
The comp suction LP
alarm is generated
frequently.
Reference to the
solutions for the comp
suction LP alarm.
Gas pipe temp.
sensor fault
Major
1. Cables to the
temperature sensor
are not properly
connected.
2. The temperature
sensor is faulty.
1. Check cables to the
temperature sensor.
2. Maintain or replace
the temperature
sensor.
Compressor
preheating alarm
Warnin
g
The compressor heating
belt is preheating the
compressor oil.
Wait until the
preheating is complete
or manually stop
preheating in the
Setting menu.
FusionModule800 Smart Small Data Center
User Manual
6 O&M
Issue 01 (2021-02-05)
Copyright © Huawei Technologies Co., Ltd.
390