Hisense ADT-12UX4SSNL3 Technical & Service Manual page 130

T R O U B L E S H
T R O U B L E S H
1 4 .
1 4 .
Fault
Fault Description
code
AC voltage is
18
abnormal
Suction
19 temperature
sensor fault
The defrosting
22
sensor fault
45 IPM fault
IPM and control
board
46
communication
fault
Discharge
47 temperature too
high fault
the outdoor DC fan
48 motor fault
(upper fan motor)
the outdoor DC fan
49 motor fault
(down fan motor)
The unit turn off
due to the IPM
91
board over heating
fault
DC-� INVERTER AIR CONDITIONER TECHNICAL&SERVICE MANUAL
O O T I N G
O O T I N G
Possible Reason of Abnormality
1.The AC voltage>275V or <160V.
2.The AC voltage of sampling circuit on
the driver board is abnormally
1.The wiring of the suction temperature
sensor connect loose;
2. The suction temperature sensor is
failure;
3. The sampling circuit is abnormally.
1.The wiring of the defrosting sensor
connect loose;
2.The defrosting sensor is failure;
3.The sampling circuit is abnormally
There are many reasons for this failure,
If you need further analysis, fault code of
the driver board is needed by watching
the driver board fault led. Analysis can
be further to know why and how to
operate. Specific see table 5, table 6.
1.The cable between the control board
and the driver board connect loose;
2.The cable between the control board
and the driver board is failure;
3.The driver 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 ambient 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;
3. The down DC fan motor is failure;
4. The drive circuit of the down DC fan
motor is failure;
5. The outdoor fan has been blocked.
1.The outdoor ambient is too high;
2. The speed of the out fan motor is too
low if the fan motor is AC fan motor;
3.The outdoor unit has been installed
without standard;
4.The supply power is too low.
How to Deal With
1. Normally protection, please check the
supply power;
2. Replace the driver board.
1.Reconnect the wiring of the suction
temperature sensor;
2.Replace the suction temperature
sensor;
3.Replace the outdoor control board.
1. Reconnect the wiring of the defrosting
sensor;
2. Replace the defrosting sensor;
3. Replace the outdoor control board.
See attached "analysis of the driving
board fault".
1.Reconnect the cable between the
control board and the driver board;
2.Replace the communication cable
between the control board and the
driver board;
3.Replace the driver 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 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 driver 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 driver board of the fan
motor;
5. Check the outdoor fan and ensure the
outdoor fan can run normally.
1. Normally protection;
2. Check the fan capacitor, and replace
the fan capacitor if it is failure;
3. Reinstalled the outdoor unit refer
to the installation user manual;
4.Normally protection.
Remarks
128