Huawei NetCol5000-A050 User Manual page 221

NetCol5000-A050 In-row Air Cooled Smart Cooling
Product
User Manual
Alarm
ID
A183-0
1
A184-0
1
A185-0
1
Issue 08 (2021-09-17)
Alarm Name Alar
m
Seve
rity
Outdoor MAJ
temperature OR
sensor fault
Compressor WAR
preheating NIN
alarm G
Insufficient WAR
refrigerant NIN
alarm G
Copyright © Huawei Technologies Co., Ltd.
Possible Cause
1. The cables to
the temperature
sensor are loose or
damaged.
2. The
temperature
sensor is faulty.
The compressor is
preheated before
startup.
The compressor is
preheated after a
power failure.
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.
4. The expansion
valve is blocked or
stuck, or the
expansion valve
coil and cable
connections are
faulty.
9 Alarm Reference
Solution
1. Check the cables to
the temperature sensor.
2. Maintain or replace
the temperature sensor.
1. Start the equipment
after preheating is
complete, or set the
Compressor preheating
parameter to Off to
stop preheating.
2. Wait until
compressor preheating
is complete, or set the
Compressor preheating
parameter to Off to
stop preheating.
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.
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