NetCol8000-A013 In-room Air Cooled Smart Cooling
Product
User Manual (800 mm Width)
5 System Operation and Maintenance
Issue 05 (2019-12-20)
Copyright © Huawei Technologies Co., Ltd.
93
Alarm
ID
Alarm Name System
Action
Possible Causes
Solution
705
Outdoor Temp
Sensor Fault
The
compressor
shuts down.
(705 and 706
are triggered
at the same
time.)
1.
The temperature sensor
cable is not properly
connected.
2.
The temperature sensor is
faulty.
1.
Check the cable connection
to the temperature sensor.
2.
Maintain or replace the
temperature sensor.
706
Inverter Temp
Sensor Fault
The
compressor
shuts down.
(705 and 706
are triggered
at the same
time.)
1.
The temperature sensor
cable is not properly
connected.
2.
The temperature sensor is
faulty.
1.
Check the cable connection
to the temperature sensor.
2.
Maintain or replace the
temperature sensor.
707
OutUnit
Comm
Interrupt
Alarm
The
compressor
shuts down.
1.
The signal cables of the
indoor and outdoor units are
incorrectly connected.
2.
The signal cables of the
indoor and outdoor units are
not shielded.
3.
The connector of the signal
cable of the indoor or
outdoor unit is loose.
4.
The outdoor unit powers off.
1.
Connect the signal cables
according to the correct wire
sequence.
2.
Use shielded signal cables.
3.
Check and reconnect any
loose cable or connector.
4.
Power on the outdoor unit.
708
OutUnit
Comm Fail
The
compressor
shuts down.
The communication between
the main control board of the
outdoor unit and the
compressor drive board is
faulty.
1.
Check whether the power
supply to the compressor
drive board is normal.
2.
Replace the compressor
drive board if it is damaged.
709
OutUnit
Mainboard
Fault
--
The E square of the main
control board of the outdoor
unit is faulty.
Replace the main control board
of the outdoor unit.
710
OutUnit Power
Hardware
Fault
The
compressor
shuts down.
The compressor drive board
reports L0.
1.
Check the compressor
running status.
2.
Check the running status of
the outdoor unit on the LCD
of the indoor unit.
3.
Check the cables between
the compressor and the
compressor drive board.
4.
Replace the compressor
drive board or compressor.
711
Return Air
Temp/Humid
Invalid
The
compressor,
electric
heater, and
humidifier
1.
The T/H sensor cable is not
properly connected.
2.
The T/H sensor is faulty.
1.
Check the cable to the T/H
sensor.
2.
Maintain or replace the T/H
sensor.