Johnson Controls CICM008B21S, Service Manual

Page: 111 / 152

SM-18003
5-13
EXTERNAL INPUT/OUTPUT AND FUNCTION SETTING
NOTES:
1. Wired Controller is required for this function.
2. Refer to Table 5.1 for details of the required components.
3. If multiple indoor units are connected to the same communication cable for wired controller, input the
signal to any of these indoor units.
4. When the communication cable is not used in the twin, triple and quad combinations for simultaneous
operation, set this function only to the main indoor unit.
Indoor Unit PCB
Wiring Diagram Example
(Example: Remote Cooling/Heating Change is set to terminals 1 and 2 of CN3.)
CN3
X1
3P Connector
3
2
1
2
1
COOL HEAT
X1
Power
Source
Signal to terminals 1 & 2 of CN3 Heat
Cool
Heat
Cool
Operation Mode of Unit
Control by Wired Controller (Cool)
Time Chart
(Example: Remote Cooling/Heating Change is set to terminals 1 and 2 of CN3.)
Control by Wired Controller (Heat)
5.4.1.5 Remote Cooling/Heating Change [ Input Setting: Code (07) ]
The cooling or heating operation mode can be changed by giving a contact signal from the outside to the
unit. Set this function to CN3 with a wired controller according to Section 5.4.2.1 “Function Selection Item.”
This function detects ON to OFF transition and OFF to ON transition. Of the commands by this signal and
a wired controller, the command given later is preferentially executed. An example of basic wiring and time
chart is shown below.