Hisense AMW2-18U4RJC Technical & Service Manual page 134

15. TROUBLESHOOTING
Fault
Fault Description
code
51 Drainage protection
Mode Conflict Fault
55
Communication
between Indoor
64
& Outdoor unit
Fault
Indoor unit zero
71
check fault
72 Indoor fan motor fault
Indoor EEPROM
73 Data
1 fault
Table 7 Limitation Code
Possible Reason of Abnormality
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.
The user set the conflicting mode for
more than two indoor units
1. The connection cable between
the indoor unit and the outdoor
unit connect wrong;
2. The communication cable
connect loose;
3.The communication cable
between the indoor unit and the
outdoor unit is failure or the
cable between the indoor control
board to terminal is failure or the
cable between the outdoor
control board to the terminal is
failure;
4. The indoor control board is
failure;
5. The outdoor control board is
failure.
1. The motor wire is loosen;
2. The motor connect is open;
3. The motor is failure;
4. Control board is failure.
5. Indoor fan is baffled.
1. The cable of the indoor fan
motor connect loose;
2. The cable of the indoor fan
motor is failure;
3. The indoor fan motor is failure;
4. The indoor control board is
failure.
1. Indoor EE components is failure;
2. The control circuit of the EE
components is failure;
3. The EE components has been
inserted with opposite
direction.
How to Deal With
1.1 Check whether there are
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.
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. Reconnect the connection
cable refer to the indoor and
outdoor wiring diagram;
2. Reconnect the
communication cable refer to
the indoor and outdoor wiring
diagram;
3. Replace the communication
cable refer to the indoor and
outdoor wiring diagram;
4. Replace the indoor control
board;
5. Replace the outdoor control
board.
1.Replace the motor wire and
make sure the wire connect
is well;
2. Replace the motor wire;
3. Change the motor;
4. Change the indoor control
board;
5. Check and elimination of
fan motor rotation.
1. Reconnect the cable of the
fan motor;
2. Replace the cable of the fan
motor;
3. Replace the fan motor;
4. Replace the indoor control
board;
5. Check the indoor fan and
ensure the indoor fan can
run normally.
1. Replace the EE components;
2. Replace the indoor control
board;
3. Reassembly the EE
components of the indoor
control board.
128
Remarks