Huawei NetCol8000-E220 User Manual page 166

NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual
Alar
m ID
A077
-20
A077
-20
A077
-20
A089
-01
A089
-01
Issue 06 (2020-08-19)
Alarm Alarm Name
Severit
y
MAJOR Exhaust fan 4
fault
MAJOR Exhaust fan 5
fault
MAJOR Exhaust fan 6
fault
MAJOR Compressor 1
drive speed
limit alarm
MAJOR Compressor 2
drive speed
limit alarm
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Probable Cause
1. The ground cable
to the fan is not
connected properly.
2. The fan is faulty.
1. The ground cable
to the fan is not
connected properly.
2. The fan is faulty.
1. The ground cable
to the fan is not
connected properly.
2. The fan is faulty.
1. The compressor
lacks oil.
2. The refrigerant
leaks.
1. The compressor
lacks oil.
2. The refrigerant
leaks.
Solution
1. Check the ground
cable connection to the
fan.
2. Maintain or replace
the fan.
1. Check the ground
cable connection to the
fan.
2. Maintain or replace
the fan.
1. Check the ground
cable connection to the
fan.
2. Maintain or replace
the fan.
1. Fill oil to the
compressor.
2. Identify and repair
the leaking point, and
refill refrigerant after
maintenance.
1. Fill oil to the
compressor.
2. Identify and repair
the leaking point, and
refill refrigerant after
maintenance.
157