Toshiba MMU-AP0072H2UL Service Manual page 66

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. 2E
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 forgotten-OFF of the indoor unit can be protected.
• When inserting a card, start/stop operation from the remote controller is allowed.
• When taking out a card, the system stops if the indoor unit is operating and start/stop operation from the
remote controller is forbidden.
1. Control items
1) Outside contact ON : The start/stop operation from the remote controller is allowed.
2) Outside contact OFF : If the indoor unit is operating, it is stopped forcedly.
* 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 controller switch in the following procedure.
* Use the wired remote controller switch during stop of the system.
1
Push concurrently
2
Using the setup temp
3
Using the timer time
4
Push SET button.
5
Push button. (The status returns to the usual stop status.)
TEST
3. Wiring
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
CN73
EXCT
(2P plug: RED)
Indoor control P.C. board
(Status that card is inserted in the card switch box)
(Start/Stop prohibited to remote controller)
(Status that card is taken out from the card switch box)
CL
+ + buttons for 4 seconds or more.
SET
TEST
or button, specify the CODE No.
or button, set
Relay (procured locally)
CN61
1 1
T10
2 2
(YEL)
3 3
4 4
5 5
6 6
Relay (procured locally)
1 1
2 2
Relay coil signal
0001 0001 0001 0001 0001
to the setup data.
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.
66
2E 2E 2E 2E 2E
.
* In the figure, the contact indicates
a status that the card is taken out.