Hisense AUD-18UX4SGKL Service Manual page 70

7.TROUBLE SHOOTING
the sensor
the expansion
27
valve A （ thick
tube） fault
the sensor
the expansion
28
valve B （ thick
tube） fault
the sensor
the expansion
29
valve C （ thick
tube） fault
the sensor
the expansion
30
valve D （ thick
tube） fault
The discharge
31 pressure is too
high
The suction
32 pressure is too
low fault
the current
41
sensor fault
the voltage
42
sensor fault
high-pressure
43 pressure sensor
fault
low-pressure
44
pressure sensor
3.The sampling
abnormally
1. The wiring of the sensor for the
expansion valve
of
connect loose;
2.The sensor of the expansion
valve A（thick tube）is failure;
3.The sampling
abnormally
1. The wiring of the sensor for the
expansion valve
of
connect loose;
2.The sensor of the expansion
valve B（thick tube）is failure;
3. The sampling
abnormally
1. The wiring of the sensor for the
expansion valve
of
connect loose;
2.The sensor of the expansion
valve C（thick tube）is failure;
3.The sampling
abnormally
1. The wiring of the sensor for the
expansion valve
of
connect loose;
2.The sensor of the expansion
valve D（thick tube）is failure;
3.The sampling
abnormally
1. Overload in cooling;
2. Overload in heating
1.The refrigerate is not enough for
the unit;
2.The expansion valve is failure in
heating mode;
3.The outdoor
temperature is too low in heating
mode
1.The wiring of the current sensor
connect wrong or loose;
2.The current sensor is failure;
3. The sampling circuit of the
current sensor is failure.
1.The wiring of the voltage sensor
connect wrong or loose;
2. The voltage sensor is failure;
3. The sampling circuit of the
voltage sensor is failure.
1.The wiring of the high-pressure
pressure sensor connect loose;
2.The high-pressure
sensor is failure
3.The sampling
high-pressure pressure sensor is
failure.
1.The wiring of the low-pressure
pressure sensor connect loose;
circuit is
A(thick tube)
1. Reconnect the wiring of the sensor
for the expansion valve A(thick tube);
2.
expansion valve A(thick tube);
3. Replace the outdoor control board.
circuit is
B(thick tube)
1. Reconnect the wiring of the sensor
for the expansion valve B(thick tube);
2.
expansion valve B(thick tube);
3. Replace the outdoor control board.
circuit is
C(thick tube)
1. Reconnect the wiring of the sensor
for the expansion valve C(thick tube);
2.
expansion valve C(thick tube);
3.Replace the outdoor control board.
circuit is
1. Reconnect the wiring of the sensor
D(thick tube)
for
tube);
2.
expansion valve D(thick tube);
3. Replace the outdoor control board
circuit is
components.
1. Please refer to the Note 3;
2. Please refer to the Note 4.
1.Check the welding point to confirm
whether it exist the leakage point,
and then add some refrigerate;
2. Replace the expansion valve;
ambient
3.The unit should operate within
allowable temperature range.
1.Reconnect the wiring of the current
sensor;
2.Replace the current sensor;
3.Replace the outdoor control board.
1. Reconnect the wiring of the current
sensor;
2. Replace the voltage sensor;
3. Replace the outdoor control board.
1.Reconnect
pressure high-pressure pressure sensor;
2.Replace the high-pressure pressure
circuit of the sensor;
3.Replace the outdoor control board.
1.Reconnect
low-pressure pressure sensor;
Replace the sensor
Replace the sensor
Replace the sensor
the expansion valve
Replace the sensor
the wiring
the wiring
for the
for the
for the
D(thick
for the
of the
of the