Huawei NetCol8000-A013 User Manual page 113

NetCol8000-A013 In-room Air Cooled Smart Cooling
Product
User Manual (600 mm Width)
Alarm Alarm Name
ID
714 Power Overvolt
Alarm
715 Power Overfreq
Alarm
716 Power Underfreq
Alarm
717 Group Unit Qty
Mismatch Alarm
Issue 04 (2022-11-25)
System
Action
The system
shuts down all
components.
The system
shuts down all
components.
The system
shuts down all
components.
--
Copyright © Huawei Digital Power Technologies Co., Ltd.
5 System Operation and Maintenance
Possible Causes
1. The power supply
voltage of the
indoor unit is too
high.
2. The power supply
voltage of the
outdoor unit is too
high.
The power supply
frequency of the
indoor unit is too high.
1. The power supply
frequency of the
indoor unit is too
low.
2. The power supply
frequency of the
outdoor unit is too
low.
3. The main control
board of the indoor
unit is faulty.
4. The main control
board of the
outdoor unit is
faulty.
1. One slave unit in
the teamwork group
powers off.
2. The teamwork
connection fails.
3. The number of units
is incorrectly set for
the teamwork
master unit.
Solution
1. Decrease the power
supply voltage of
the indoor unit.
2. Decrease the power
supply voltage of
the outdoor unit.
Decrease the power
supply frequency of the
indoor unit.
1. Spot-check the
power supply
frequency of the
indoor unit and
increase the power
supply frequency.
2. Spot-check the
power supply
frequency of the
outdoor unit and
increase the power
supply frequency.
3. Replace the main
control board of the
indoor unit.
4. Replace the main
control board of the
outdoor unit.
1. Check the slave unit
that has powered
off and power it on.
2. Check and re-detect
the teamwork
connection.
3. Check the number
of units and set it
correctly.
106