Mitsubishi Electronics PCH42GK, PCH24GK OC277-51, Group Control with a Single Remote Controller

2. GROUP CONTROL WITH A SINGLE REMOTE CONTROLLER

A maximum of 50 units can be started in order according to the dip switch settings

2-1 How to wire

(1)	Connect the remote controller to the double terminal block
	on the indoor controller board of the master unit (No.0 unit).
	(See Figure 1.)
(2)	Connect the double terminal block of the master unit to the
	double terminal block of No.1 unit.
(3)	Connect the double terminal block of No.1 unit to the dou-
	ble terminal block of No.2 unit.
(4)	Continue the process until all the units are connected with
	two-wire cables. (See Figure 2.)
(5)	Remove the connector CN40 from the indoor controller
	board of each unit except the master unit. (See Figure 3.)

Figure 1

To remote controller

Master unit
electrical box	GR
	L1 L2
	3
	2
	1

To next		To next unit
unit
Next unit	L2 GR	The last unit
		dose not have
electrical box	L1
	3	this wire.
	2
	1

(6) Set the unit-address of each unit with SW2 on the indoor

controller board following the instructions below.

2-2 How to set unit-address

The unit-address also serves as a successive-start timer which starts each unit at intervals of 1 second. If two or more units have the same unit-address in a group control, operation stops due to system error. Be sure to set SW2 correctly following the instructions below.

(1)Each lever of SW2 shows the number as follows.

SW2-1 : 1 SW2-4 : 8

SW2-2 : 2 SW2-5 : 16

SW2-3 : 4 SW2-6 : 32

(2)Total number of levers turned to ON shows the address of the unit.

For example, to set No.3 unit, turn ON SW2-1 and SW2-2.

(3)In this way, set from the master unit to the last unit. Do not forget to set the master (No. 0) unit.

Figure 2
Master	No.1 unit	No.2 unit	Last unit
unit	2-wire cable

Figure 3

Indoor controller board ▼

Should be removed from all units other than unitNo.0:

(Master Unit).

CN40

CN40

SW2

SW2

ON

1

2

3

4

6 5

Setting examples

	Master (No. 0) unit		No. 1 unit		No. 2 unit		No. 4 unit		No. 8 unit		No. 16 unit		No. 32 unit
	ALL OFF		1 ON		2 ON			3 ON	4 ON			5 ON	6 ON
SW2
		6		6		6		6		6		6		6
		5		5		5		5		5		5		5
		4		4		4		4		4		4		4
		3		3		3		3		3		3		3
	1	2	1	2	1	2	1	2	1	2	1	2	1	2
Unit address & start		0		1		2		4		8		16		32
delay in seconds.

2-3 Unit control

The remote controller can control all units each unit turns ON or OFF individually to

ON/OFF, temperature, air flow, and swing louver. However, the thermostat in adjust to the room temperature.

OC277-51