Controlling A Group - Samsung IDH1800E Service Manual

4-4-31. Controlling a Group

* You should adjust the option switches in the electrical component box or on the PCB of the wired remote controller.
* Before setting up the option switches, always make sure that you have turned off the main power.
* After adjusting the options, you should supply the power. Otherwise, the options will not be applied.
With Wired Remote Controller
A user can operate up to sixteen air conditioners by using the wired remote controller In this case, the air conditioner can
be controlled by only one wired remote controller connected to the indoor unit and cannot be controlled by the others.
1. Connect the R1, R2 and R3 terminals in the wired remote
controller to the R1, R2 and R3 terminals in any indoor unit
"A" each.
2. Connect the R1 and R3 terminals in the indoor unit "A" to the
R1 and R3 terminals in another indoor unit "B".
Caution :
When connecting the cables, you must keep these :
• The R1 terminals must be connected to the R1s.
• The R3 terminals must be connected to the R3s.
• Do not connect the R2 terminals to anywhere.
If you connect R2 terminals, the PCB will be damaged.
3. Connect the R1 and R3 terminals of "B" to any indoor unit
"C" and connect the others as the same way.
4. Remove the CN20 connectors on the sub PCBs except the unit
connected with remote controller(Adress "0").
Number of
Switch No.
indoor unit(s)
0 One
1 Two
2 Three
3 Four
4 Five
5 Six
6 Seven
7 Eight
5. Remove the CN20 connectors on the sub PCBs except the unit
connected with remote controller(Adress "0").
6. Adjust the DIP switch No. 2 in the wired remote controller to
"ON" position.
Note : You cannot install the centralized controller when the wired
remote controller for a group has already been installed.
Samsung Electronics
Number of
Switch No.
indoor unit(s)
8 Nine
9 Ten
A Eleven
B Twelve
C Thirteen
D Fourteen
E Fifteen
F Sixteen
Installation
Unit A
Unit B
CN20
Connector
Unit C
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