Toshiba MMU-AP0091H service manual Leaving-ON prevention control, Demand control from indoor unit

nLeaving-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 item code - 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. (Status that card is inserted in the card switch box)

2)Outside contact OFF : If the indoor unit is operating, it is stopped forcedly. (Start/Stop prohibited to remote controller)

(Status that card is taken out from the card switch box)

∗When the card switch box does not perform the above contact operation, convert it using a relay with b contact.

(2)Operation

1

2

3

4

5

Handle the wired remote controller switch in the following procedure.

∗Use the wired remote controller switch during stop of the system.

Push concurrently SET		+ CL	+ TEST buttons for 4 seconds or more.
Using the setup temp			or	button, specify the item code - .
Using the timer time		or		button, set ￿￿￿￿ to the setup data.
Push SET	button.
Push TEST	button. (The status returns to the usual stop status.)

(3) Wiring				Relay (procured locally)
	CN61
	T10	1	1
		2	2
	(YEL)
		3	3				* In the figure, the contact indicates
		4	4
							a status that the card is taken out.
		5	5
		6	6
Indoor control P.C. board
					Power supply
						Outside contact (Card switch box, etc: Procured locally)

Note) Determine the cable length between the indoor control P.C. board and the relay within 2m.

nDemand control from indoor unit

When the relay is turned on, a forced thermostat-OFF operation starts.

• Wiring example

CN73
	1	1
EXCT	2	2

(2P plug: RED)

Relay (procured locally)

Note) Determine the cable length between the indoor or outdoor control P.C. board and the relay within 2m.

Relay coil signal

Indoor control P.C. board

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