Hisense AUD-18UX4SGKL Service Manual page 74

7.TROUBLE SHOOTING
The humidity
37
sensor fault
38 Indoor EE fault
The indoor DC
39
fan motor fault
The grill
40
protection
51 Drain protection
The grill
52
protection
The front panel
53 with wrong
position
55 Mode conflict
Anti-freeze
56
protection
Overload
57
protection
5. The outdoor control board is failure.
1.The cable of the humidity sensor connect
loose;
2.The humidity sensor is failure;
3. The indoor control board is failure.
1. EE components is failure;
2. The EE control circuit of the control board
is failure;
3. The EE components has been inserted
with opposite direction.
1. The cable of the DC fan motor connect
loose;
2. The indoor control board is failure;
3.The indoor fan motor is failure.
1.The grill has not been installed in right
place;
2.The protection switch is failure;
3.The indoor control board is failure.
1. The water level of the drain pan exceed
safe level;
2. The cable of the water level switch
connect loose;
3.The water level switch is failure;
4. The control board is failure.
1.The grill has not been installed in right
place;
2.The protection switch is failure;
3. The control board is failure.
1. The front panel has been blocked;
2. The cable of the switch and the motor
connect loose;
3. The switch is failure;
4. The panel motor is failure;
5. The indoor control board is failure.
1. The user set the conflicting mode for
more than two indoor units
1. The indoor unit can not blow air
normally;
2. The room temperature is too low in
cooling mode or the room temperature is
too high in heating;
3. The filter is dirty;
4. The duct resistance of the duct unit is too
high
5. The setting fan speed is too low
6.The indoor unit has been installed without
standard
1. Overload in cooling mode;
2. Overload in heating mode;
1. Reconnect the
humidity sensor;
2. Replace the humidity sensor;
3.Replace the indoor control board.
1. Replace the EE components;
2. Replace the control board;
3. Reinsert the EE components.
1. Reconnect the cable of the indoor
fan motor;
2. Replace the indoor control board;
3. Replace the indoor fan motor.
1. Adjust the grill and put it in right
place;
2. Replace the switch components;
3. Replace the indoor control board.
1. Check whether
something to block the drain hose or
the height of the drain hose is too
high;
1.2 Check the water pump and
replace the water pump if the water
pump is failure;
2. Reconnect the cable of the water
level switch refer to the wiring
diagram;
3. Replace the water level switch;
4. Replace the control board.
1. Adjust the grill and put it in right
place;
2. Replace the switch components;
3. Replace the indoor control board.
1. Reassembly the front panel;
2. Reconnect the cable of the switch
and the panel motor;
3. Replace the switch components;
4. Replace the panel motor;
5. Replace the indoor control board.
1. Reset the operate mode for the
indoor unit, for the one outdoor unit,
the user should avoid to set the
conflicting operate mode with the
indoor units
1. Check the indoor fan, indoor fan
motor and evaporator
normally;
2. Normally protection
3. Clean the filter;
4.Check the volume control valve,
duct length etc;
5. Set the speed with high speed;
6. Reinstall the indoor unit refer to the
user manual to change the distance
between the indoor unit and the wall
or ceiling.
1. Please refer to the Note 3;
2. Please refer to the Note 4
cable of the
there are
whether