Huawei NetCol5000-A User Manual page 168

NetCol5000-A(025, 035) In-row Air Cooled Smart
Cooling Product
User Manual (600 mm)
Alar Alarm
Alarm
m Severit
ID y
a008 Comp Major
HP
a009 Comp Critical
HP lock
Issue 13 (2019-01-15)
Default
Impact
Value
4.25 The alarm
MPa is
generated
, and the
compress
or shuts
down
forcibly.
4.25 The alarm
MPa is
generated
, and the
compress
or is
locked
and not
allowed
to be
started.
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Possible Cause
1. The power supply to the
outdoor unit is lost, or a
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
pressure switch are
loose or damaged.
6. The high pressure
switch is faulty.
7. The solenoid valve is
faulty.
8. The refrigerant is
overfilled.
The a008 comp HP alarm
is generated frequently.
Solution
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 pressure switch.
6. Maintain or replace the
high pressure switch.
7. Maintain or replace the
solenoid coil or the
solenoid valve.
8. Decrease certain
amount of refrigerant.
Reference to the solutions
for the a008 comp HP
alarm.
159