Toshiba MMD-AP0481HF2UL Service Manual page 40

Leaving-ON prevention control
[Function]
• This function controls the indoor units individually. It is connected with cable to the control P.C. board of the
indoor unit.
• In a group control, it is connected with cable to the indoor unit (Control P.C. board), and the CODE No.
is set to the connected indoor unit.
• It is used when the start operation from outside if unnecessary but the stop operation is necessary.
• Using a card switch box, card lock, etc, the indoor unit can be protected if it is forgotten to be turned off.
• When inserting a card, start/stop operation from the remote control is allowed.
• When taking out a card, the system stops if the indoor unit is operating and start/stop operation from the
remote control is forbidden.
1. Control items
1) Outside contact ON : The start/stop operation from the remote control is allowed.
2) Outside contact OFF : If the indoor unit is operating, it is forced to stop.
* When the card switch box does not perform the above contact operation, convert it using a relay with b
contact.
2. Operation
Handle the wired remote control switch in the following procedure.
* Use the wired remote control switch when the system is being turned off.
1
Push concurrently
2
Using the temperature setup
3
Using the timer time
4
Push button.
5
Push button. (The status returns to the usual stop status.)
3. Wiring
CN073
T10
(YEL)
Indoor control P.C. board
Note) Determine the cable length between the indoor control P.C. board and the relay within 2m.
Power peak-cut from indoor unit
When the relay is turned on, a forced thermostat-OFF operation starts.
• Wiring example
CN073
EXCT
(2P plug: RED)
Indoor control P.C. board
(Status that card is inserted in the card switch box)
(Start/Stop prohibited to remote control)
(Status that card is taken out from the card switch box)
+ + buttons for 4 seconds or more.
/
/ button, set
Relay (procured locally)
1 1
2 2
3 3
4 4
5 5
6 6
Relay (procured locally)
1 1
2 2
Relay coil signal
button, specify the CODE No.
0001 0001 to the setup data.
0001 0001 0001
Power supply
Outside contact (Card switch box, etc: Procured locally)
Note) Determine the cable length between the indoor or
outdoor control P.C. board and the relay within 2m.
– 40 –
2E 2E 2E 2E 2E
.
* In the figure, the contact indicates
a status that the card is taken out.
2E