Mitsubishi Electronics Comprehensive Guide on CN51 Wiring and PAC-SA88HA-E Adapter for Mitsubishi Air Conditioners

6. MULTIPLE REMOTE CONTROL DISPLAY

You can control several units with a multiple remote control display, by wiring an optional multiple display adapter (PAC-SA88HA-E) with relays and lamps on the market.

How to wire

(1)Connect the multiple display adapter to the connector CN51 on the indoor controller board.

(2)Wire three of the five wires from the multiple display adapter as shown in the figure below.

<Wiring >			X2	GL
		GREEN
5
			X2
CN51		YELLOW	X1	RL	Power
			X1
					supply
1		ORANGE
connector(5P)		RED
		BROWN Electrical insulation is needed.
	Optional multiple display		Wiring at the actual place
	adapter

The maximum distance between indoor board and relay is 33ft.

<System>

Power3wires

supply3wires 3wires

2wires	No.1 unit	No.2 unit	No.3 unit
	Remote	Relay box
	controller	(Field supply)
	cable

Multiple remote contr	o	l
			Remote	Remote	Remote
ON-OFF display
(Field supply)			controller	controller	controller
(Operation check)

Indoor controller board

CN51

CN51

[Notes on Signs]

X1:Relay (for operation lamp) X2:Relay (for check lamp) RL:Operation Lamp GL:Check Lamp

[Field supplied parts]

Relays:12V DC with rated coil power consumption below 0.9W.

Lamps:Matching to power supply voltage.

<Wiring diagram>
	RL-1	X1-1			Multiple remote
Power	GL-1	X2-1	X1-1	1	controller adapter
supply
			X2-1	5	No.1 unit
	RL-2	X1-2
	GL-2	X2-2	X1-2	1
			X2-2		No.2 unit
				5
		X1-3
	RL-3
	GL-3	X2-3	X1-3	1	No.3 unit
			X2-3	5	connect to
					the connector CN51
Multiple Remote Control Display			Relay box

7. AUTO RESTART FUNCTION

By setting the dip switch SW1-8 to ON, the air conditioner can be started/stopped by power supply ON/OFF. If the air conditioner is OFF before the power failure, it will not start operation by power restore.

•This function is mainly to emergency performance when the power supply stops temporarily. Therefore, since the protec- tion function (for example, clank case heater and prevention from restarting in 3 minutes, etc.) of the device is not operat- ed, this function should not be used mostly.

8. TIMER OPERATION OR THE OPERATION BY AN EXTERNAL SIGNAL

<Wiring>		A : an optional timer adapter
A		B : a single-throw switch
		A
B		B
Brown		Brown
		Red
Red
	Orange Remote controller	Orange Remote controller

For remote control, connect the optional timer adapter (PAC-SA89TA-E)

OC277-54