Huawei NetCol8000-A Series User Manual page 168

NetCol8000-A(050, 100) In-room Air Cooled Smart
Cooling Product
User Manual
Alar
m ID
a008
Issue 12 (2020-10-28)
Alarm Alar Occurren
Name m ce
Sever Condition
ity s
Comp Major The high
HP pressure
switch is
disconnect
ed when
the alarm
detection
delay
expires.
Copyright © Huawei Technologies Co., Ltd.
7 System Operation and Maintenance
Possible Causes
1. The power supply
to the outdoor unit
is lost, or phase is
open or error.
2. The on/off signal
cables of the
outdoor unit are
disconnected.
3. The condenser fins
are blocked.
4. The outdoor fan or
fan driver is
damaged.
5. The cables to the
high press switch
are loose or
damaged.
6. The high press
switch is faulty.
7. The solenoid valve
is faulty.
8. The refrigerant is
overfilled.
Solutions
1. Check the
power supply
of the
outdoor unit.
2. Check the
on/off signal
cables of the
outdoor unit.
3. Clean the
condenser
fins.
4. Maintain or
replace the
outdoor unit
or unit driver.
5. Check the
cables to the
high press
switch.
6. Maintain or
replace the
high press
switch.
7. Maintain or
replace the
solenoid coil
or the
solenoid
valve.
8. Decrease
certain
amount of
refrigerant.
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