NetCol5000-A 42 kW Air Cooled In-row Precision Air
Conditioner
User Manual
5 Operation and Maintenance
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
2. The comp driver is faulty.
3. The comp is faulty.
comp driver.
3. Maintain or replace the
comp.
1. The power supply voltage
is low.
2. The comp driver is faulty.
3. The comp is faulty.
4. The main power supply is
faulty or the cables to the
comp driver are loose or
damaged.
1. Check the power supply
voltage.
2. Maintain or replace the
comp driver.
3. Maintain or replace the
comp.
4. Reconnect the main
power supply or the
cables to the comp driver.
1. The comp is in lack of
oil.
2. The condenser fins are
blocked.
3. The outdoor units are
faulty.
4. The refrigerant is
overfilled.
5. The comp is faulty.
1. Fill oil to the comp.
2. Clean the condenser fins.
3. Maintain or replace the
outdoor units.
4. Decrease certain amount
of refrigerant.
5. Maintain or replace the
comp.
1. The comp is in lack of
oil.
2. The condenser fins are
blocked.
3. Outdoor fans run
abnormally.
4. The refrigerant is
overfilled.
5. The comp is faulty.
1. Fill oil to the comp.
2. Clean the condenser fins.
3. Maintain or replace
outdoor fans.
4. Decrease certain amount
of refrigerant.
5. Maintain or replace the
comp.
1. The comp is in lack of
oil.
2. The comp is faulty.
3. The comp driver is faulty.
1. Fill oil to the comp.
2. Maintain or replace the
comp.
3. Maintain or replace the
comp driver.
The fans in the comp driver
are faulty.
Check the fans in the comp
driver.
Comp
drive
module
overheat
1. The fans in the comp
driver are faulty.
2. Dirt exists in the air vents
of the fans in the comp
driver.
3. Comp drive heat sink is
dirty & heat ex effect
poor.
4. ECB cavity is
1. Check the fans in the
comp driver.
2. Clean the air vents of the
fans in the comp driver.
3. Clean the heat sink after
power-off.
4. Clean the cavity after
power-off.
5. Replace the drive
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