Haier AB072XCBAA, Service Manual, Page: 39 / 181

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sensor abnormal short circuit for more than
2m continuously
13 0D 31D Solenoid valve
abnormal Solenoid valve act
incorrectly 3 times
continuously ○
14 4C 15D Discharging temp.
sensor abnormal
Sensor broken down or
short circuit for more than
2m continuously ○
15 05 17D EEPROM abnormal EEPROM data missing Run as the
default
value
16 54 26D Pressure
abnormal(low
pressure)
Low pressure switch acts in
normal running
○
17 50 15D Compressor overheat the discharging
temperature is higher than
120degree
Resumable
if lower
than
100degree
18 0C 23D Abnormal mode Indoor operation mode is
different with the running
indoor unit. ○
19 4B 18D Outdoor coil
B(suction temp
sensor—for MRV II) Sensor broken down or
short circuit for more than
2m continuously
○
20 4D 15D Outdoor discharging
B(oil temp
sensor—for MRV II)
Sensor broken down or
short circuit for more than
2m continuously
○
21 32 07D Power module failure Power module overheat, or
over current, or short circuit
※
22 54 08D No load Sensor abnormal or the
compressor not start up
※
○
shows resumable fault,
※
shows it is not resumable fault.
Setting address method:
The address setting can be realized by setting indoor PCB.
If you use the group control function, there should be a master unit and 15 sets of slave units.
For the master unit, the SW5-3 should be at “ON”. For the slave units, the SW5-3 should be
at “OFF”.
Please refer the below table,
Indoor
unit
address
SW1-4 SW1-3 SW1-2 SW1-1
1 OFF OFF OFF OFF
2 OFF OFF OFF ON