Huawei NetCol5000-A035 User Manual page 172

NetCol5000-A(025, 035) In-row Air Cooled Smart
Cooling Product
User Manual (600 mm Width)
Al
ar
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ID
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Issue 17 (2020-10-22)
Alar Alar Defau
m m lt
Seve Value
rity
Retur Majo N/A
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T/H
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Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Impac Possible Cause
t
The 1. The cables to the
alarm T/H sensor are
is loose or
genera damaged.
ted.
2. The DIP switch
of the T/H
sensor is set
incorrectly.
3. The T/H sensor
is faulty.
4. The
communication
port of the
control board is
faulty.
The 1. The power
alarm supply to the
is outdoor unit is
genera lost, or a phase
ted, is open or error.
and
2. The on/off signal
the
cables of the
compr
outdoor unit are
essor
disconnected.
shuts
3. The condenser
down
fins are blocked.
forcibl
4. The outdoor fan
y.
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.
Solution
1. Check the
cables to the
T/H sensor.
2. Set the DIP
switch of the
T/H sensor
correctly.
3. Maintain or
replace the T/H
sensor.
4. Maintain or
replace the
control board.
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.
162