Hisense AUD-18UX4SGKL Service Manual page 71
Dc inverter air conditioner
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Also See for AUD-18UX4SGKL:
- Service manual (116 pages) ,
- User and installation instructions manual (49 pages) ,
- Technical & service manual (136 pages)
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7.TROUBLE SHOOTING
fault
45
the drive fault
the
communication
between
46
outdoor control
board and the
drive board has
in trouble
discharge
47
temperature
too high fault
the outdoor DC
48
fan motor fault
1(up fan motor)
the outdoor DC
fan motor fault
49
2(down
motor)
2.The
low-pressure
sensor is failure
3.The
sampling
low-pressure pressure sensor is
failure.
1.The wiring of the drive board
connect loose;
2. The wiring of the drive board
connect wrong;
3.The supply power is abnormal;
4. The drive board is failure.
5.The connection
compressor connect loose;
6.The connection
compressor connect wrong.
7.The compressor is failure;
1.The cable between the control
board and the drive board connect
the
loose;
2.The cable between the control
board and the drive board is failure;
3.The drive board is failure
4.The control board is failure
1. The refrigerant of the unit is not
enough;
2.The refrigerant of the unit is not
enough due to add the length of the
installation pipe
3.Throttling service is failure;
4.The
outdoor
temperature is too high
1.The wiring of the up DC fan motor
connect loose;
2. The cord of the up DC fan motor
is failure;
3.The up DC fan motor is failure;
4. The drive circuit of the up DC fan
motor is failure;
5. The outdoor fan has been
blocked.
1.The wiring of the down DC fan
motor connect loose;
2.The cord of the down DC fan
motor is failure;
fan
3. The down DC fan motor is
failure;
4. The drive circuit of the down DC
pressure
2.Replace the low-pressure pressure
sensor;
circuit
of
the
3.Replace the outdoor control board.
1.Reconnect the wiring of the drive
board;
2.Reconnect the wiring of the drive
board;
3.Normally protection;
4.Replace the drive board.
5.Reconnect
compressor;
6.Reconnect
compressor refer to the outdoor
wiring diagram, please note the U
port
cable
of
the
connect with RED color cable. The V
port
cable
of
the
connect with White color cable, the W
port
connect with BLUE color cable.
7.Check the coil resistance of the
compressor between the terminal U,
V, W, the value is 0.95Ω，if it is not
meet
compressor is failure and you should
replace the compressor.
1.Reconnect the cable between the
control board and the drive board;
2.Replace the communication cable
between the control board and the
drive board;
3.Replace the drive board;
4.Replace the control board.
1.Check the welding point to confirm
whether the unit has exist leakage
point, and then add some refrigerant.
2.Add some refrigerant refer to the
installation user manual;
3.Replace the throttling service(such
ambient
as capillary, expansion valve)
4. Normally protection.
1.Reconnect the wiring of the up DC
fan motor;
2.Replace the up DC fan motor;
3. Replace the up DC fan motor;
4.Replace the drive board of the fan
motor;
5. Check the outdoor fan and ensure
the outdoor fan can run normally.
1. Reconnect the wiring of the down
DC fan motor;
2. Replace the down DC fan motor;
3.Replace the down DC fan motor;
4.Replace the drive board of the fan
motor;
5. Check the outdoor fan and ensure
the
wiring
the
wiring
of
the
drive
board
of
the
drive
board
of
the
drive
board
the
value,
it
means
of
the
of
the
should
should
should
the
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