Haier HCFU-18CF03 Service Manual page 50

There is no lock function only in the wired controller. But when it is connected with a central
controller, if the central controller is set to "central", the buttons in the wired controller will be
invalid, or the buttons will be valid.
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 SW1-4
address
1 OFF
2 OFF
3 OFF
4 OFF
5 OFF
6 OFF
7 OFF
8 OFF
9 ON
10 ON
11 ON
12 ON
13 ON
14 ON
15 ON
16 ON
If you use central control type, SW1, SW2 will be used simultaneously.
Wiring request in central control type: port A-B is connected with indoor port CN16 A-B
through 2-core shield wire. Requirements:
1. Port A connects with port CN16 A of all indoor units.
2. Port B connects with port CN16 B of all indoor units.
50
Commercial Air Conditioner
SW1-3 SW1-2
OFF OFF
OFF OFF
OFF ON
OFF ON
ON OFF
ON OFF
ON ON
ON ON
OFF OFF
OFF OFF
OFF ON
OFF ON
ON OFF
ON OFF
ON ON
ON ON
SW1-1
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
Model: HCFU-18/28CF03
HCFU-18/28HF03