Huawei NetCol5000-A User Manual page 157

NetCol5000-A 42 kW Air Cooled In-row Precision Air
Conditioner
User Manual
Alarm
Alarm
ID
open
a152 Outdoor
fan driver
fault
a153 Outdoor
fan Dr DC
bus
undervol
a154 Outdoor
fan Dr DC
bus
overvolt
a155 Inverter
power
module
overtemp
a156 Inverter
output U
overcurren
t
a157 Inverter
output V
overcurren
t
Inverter
a158
output W
overcurren
t
Issue 01 (2017-07-27)
Alarm
Impact
Severity
generated.
Warning The alarm
is
generated.
Major The alarm
is
generated.
Major The alarm
is
generated.
Major The alarm
is
generated.
Major The alarm
is
generated.
Major The alarm
is
generated.
The alarm
Major
is
generated.
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Copyright © Huawei Technologies Co., Ltd.
Possible Cause
the lower threshold.
1. A cable of the fan is loose
or disconnected.
2. The fan is blocked.
3. The fan is faulty.
1. A power grid input
cable is loose.
2. The power grid voltage is
below the lower
threshold.
The power grid voltage
exceeds the upper threshold.
1. The fan is faulty.
2. The ambient temperature
exceeds the upper
threshold.
1. The driver output cable is
grounded.
2. The driver output cable
is short-circuited.
3. The fan is faulty.
1. The driver output cable is
grounded.
2. The driver output cable
is short-circuited.
3. The fan is faulty.
1. The driver output cable is
grounded.
2. The driver output cable is
short-circuited.
5 Operation and Maintenance
Solution
voltage meets specifications.
1. Secure the cables
connected to fan
terminals.
2. Clear obstacles in the fan.
3. Replace the fan.
1. Secure the power grid
input cable.
2. Power off the driver and
verify that the supply
voltage meets
specifications.
Power off the driver and
verify that the supply voltage
meets specifications.
1. Replace the fan.
2. Power off and power on
after the ambient
temperature drops to a
proper level.
1. Cut off the three-phase
power supply and check
whether the driver output
cable is grounded. See
a145 handling methods.
2. Cut off the three-phase
power supply and check
whether the driver output
cable is faulty. See the
a145 handling methods.
3. Replace the fan.
1. Cut off the three-phase
power supply and check
whether the driver output
cable is grounded. See
a145 handling methods.
2. Cut off the three-phase
power supply and check
whether the driver output
cable is faulty. See the
a145 handling methods.
3. Replace the fan.
1. Cut off the three-phase
power supply and check
whether the driver output
cable is grounded. See
149