Huawei NetCol5000-C030H90D0 User Manual page 143

NetCol5000-C(030, 032, 065) In-row Chilled Water
Smart Cooling Product
User Manual (2019)
Alar
m ID
A077
A079
Issue 03 (2020-08-30)
Alarm Alarm
Name Severi
ty
PSU 2
communicati
on failed
Indoor fan 1 MAJO
fault R
Indoor fan 2
fault
Indoor fan 3
fault
Indoor fan 4
fault
Indoor fan 5
fault
Indoor fan 6
fault
Indoor fan 7
fault
Indoor fan 8
fault
Indoor fan 9
fault
Indoor fan
10 fault
Drain MAJO
abnormal R
alarm
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Possible Cause
control board is
faulty.
1. The power supply
to the indoor fan is
abnormal.
2. The cable to the
indoor fan is not
connected properly.
3. The indoor fan is
faulty.
1. The drainage
filter is blocked.
2. The drainpipe is
blocked.
3. The condensate
pump is faulty.
4. The low liquid
level sensor is faulty.
Solution
1. Check the power
supply to the indoor
fan.
2. Check the cable
connection to the
indoor fan.
3. Maintain or replace
the indoor fan.
1. Clear the foreign
matter in the water pan
and filter.
2. Check that the
drainpipe is not blocked
or bent.
3. Check the cables to
the condensate pump,
clear the foreign matter
in the condensate
pump, or replace the
condensate pump.
4. Check the cables to
the low liquid level
sensor, clear the
obstacles, or replace the
low liquid level sensor.
135