Huawei NetCol8000-A013 User Manual page 100

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