6-5. Applied Control of Indoor Unit
Control system using Remote location ON/OFF control box (TCB-IFCB-4E2)
Wiring and setting
• In the case of group control, the control system functions as long as it is connected to one of the indoor units
(control P.C. board) in the group. If it is desired to access the operation and trouble statuses of other units,
relevant signals must be brought to it from those units individually.
Control items
(1) Start / Stop input signal Start / stop of unit
(2) In-operation signal Output present while unit in normal operation
(3) Check code Output present while alarm (e.g. serial communication trouble or operation of
protective device for indoor / outdoor unit) being activated
Wiring diagram of control system using Remote location ON/OFF control box (TCB-IFCB-4E2)
Input IFCB-4E2: No-voltage ON / OFF serial signal
Output No-voltage contact (in-operation and check code indication)
Contact capacity: Max. AC 240 V, 0.5 A
1
2
3
4
5
6
CN61
T10
(Yellow)
1
2
3
4
1
2
3
4
5
6
CN13
CN06
Start/Stop input
ON side
Start signal input
Indoor control P.C. board TCB-IFCB-4E2
COM (GND)
Remote controller disabling / ending input
In-operation signal output
COM (+12V)
Check code output
OFF side
Stop signal input
COM
In-operation signal output
Check code output
Power supply 220-240V
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