Haier AB242ACBEA Service Manual page 77

Commercial air conditioning 24 28 universal outdoor unit air conditioning
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13
13(0DH)
14
76(4CH)
15
05(05H)
16
84(54H)
17
80 (50H)
18
12 ( 0CH)
19
75 (4BH)
20
77 ( 4DH)
○ 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 "1". For the slave units, the SW5-3 should be at
"0".
Please refer the below table,
Indoor
unit
SW1-4
address
1
OFF
2
OFF
3
OFF
4
OFF
5
OFF
6
OFF
7
OFF
31D
Solenoid
abnormal
15D
Discharging
sensor abnormal
17D
EEPROM abnormal
26D
Pressure
abnormal(low
pressure)
15D
Compressor overheat
23D
Abnormal mode
18D
Outdoor
B(suction
sensor—for MRV II)
15D
Outdoor discharging
B(oil
sensor—for MRV II)
SW1-3
SW1-2
OFF
OFF
OFF
OFF
OFF
ON
OFF
ON
ON
OFF
ON
OFF
ON
ON
2m continuously
valve
Solenoid
incorrectly
continuously
temp.
Sensor broken down or
short circuit for more than
2m continuously
EEPROM data missing
Low pressure switch acts in
normal running
the
temperature is higher than
120degree
Indoor operation mode is
different with the running
indoor unit.
coil
Sensor broken down or
temp
short circuit for more than
2m continuously
Sensor broken down or
temp
short circuit for more than
2m continuously
SW1-1
OFF
ON
OFF
ON
OFF
ON
OFF
valve
act
3
times
Run as the
default
value
discharging
Resumable
if
than
100degree
lower

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