Haier SYJS-0308 Service Manual page 65

6.1.3 Number setting dialing switch using method(wired remoted control type)
The dialing switch is on indoor unit PCB. The indoor unit number setting method is as follows:
stand for NO.1 indoor unit
Digit 1
0 0
1 0
0 1
1 1
0 0
1 0
7.1.4 Indoor unit NO. lock switch (for model AU422FIAHA,AU422FIAIA, AU422F I B H A)
We have "indoor unit NO. lock switch" on outdoor PCB to lock the indoor unit setting NO.
When the lock switch is at lock state, changing or setting indoor unit NO. is not allowed . When
the lock switch is at unlock state, the outdoor unit will searching for the new added indoor unit. If the
lock switch is always at unlock state, the outdoor unit will work normally and just have a longer
communication time with the indoor unit. When you want to change the indoor unit NO. setting or you
are installing the unit ,you must set the lock switch at unlock state .
Digit 2 Digit 3
0
0
0
0
1
1
Lock switch
Unlock state
stand for NO.2 indoor unit
Digit 4 Unit number stand for
Not used
Not used
Not used
Not used
Not used
Not used
lock state
OFF
1
2
3
4
5
6