Mitsubishi PKH-1.6GKLH Technical & Service Manual page 55

6. MULTIPLE REMOTE CONTROL DISPLAY
You can control several units with a multiple remote control display, by wir-
ing an optional multiple display adapter (PAC-SA88HA-E) with relays and
lamps on the market.
6-1 How to wire
(1) Connect the multiple display adapter to the connector CN1 on the
indoor controller board.
(2) Wire three of the five wires from the multiple display adapter as shown
in the figure below.
<Wiring >
GREEN
5
CN51
YELLOW
ORANGE
1
connector(5P)
RED
Electrical insulation is needed.
BROWN
Optional multiple display
adapter
The maximum distance between
indoor board and relay is 10m.
<System>
3wires
Power
3wires
supply
3wires
No.1 unit
2wires
Remote
controller
cable
Muitiple remote control
ON-OFF display Remote
controller
(Field supply)
(Operation check)
<Wiring diagram>
RL-1
Power
GL-1
supply
RL-2
GL-2
RL-3
GL-3
Multiple Remote Control Display
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  minutes, etc.) of the device is not oper-
ated, this function should not be used mostly.
8. TIMER OPERATION OR THE OPERATION BY AN EXTERNAL SIGNAL
<Wiring>
A
B
Brown
Red
Orange
For remote control, connect the optional timer adapter (PAC-SA89TA-E)
OC229A
GL
X2
X2
X1
RL
X1
Wiring at the actual place
No.2 unit No.3 unit
Relay box
(Field supply)
Remote Remote
controller controller
X1-1
X2-1
X1-2
X2-2
X1-3
X2-3
A
B
Brown
Red
Remote controller Remote controller
Orange
 
Indoor controller board
Power
supply
[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.
Multiple remote
controller adapter
1
X1-1
No.1 unit
X2-1
5
1
X1-2
No.2 unit
X2-2
5
1
No.3 unit
X1-3
connect to
X2-3
5
the connector CN51
Relay box
A : an optional timer adapter
B : a single-throw switch
NC51
CN51