Group Control Operation (Collective Operation And Control Of Multiple Refrigerant Systems (2 To 16)) - Mitsubishi MA Series Technical Manual

3. Group Control Operation
(Collective Operation and Control of Multiple Refrigerant Systems (2 to 16))
Multiple Mr.Slim air conditioners can be operated with the same settings (e.g., operation mode, preset temperature, etc.) by using one remote
controller. Each outdoor unit can be turned ON/OFF individually by the intake sensor.
Up to 16 refrigerant systems can be controlled as a group by one remote controller.
A refrigerant address must be set for each outdoor unit. Addresses "0" to "15" can be set with no duplicates. Address "0" must be set for one of
the outdoor units.
* In the case of simultaneous twin, triple and quad units, only one refrigerant system is used.
Slim Air Conditioner System
Outdoor unit
OC
Indoor unit IC
System diagram
Wired remote
(Wired remote
controller R
controller or
wireless remote
Outdoor unit
controller
OC
receiver)
Indoor unit IC
Wireless remote
controller re-
ceiver section R'
[Reference]
For two-remote controller control, refer to "2. Two-Remote Controller Operation". However, when using both wired and wireless remote controllers,
receivers must be connected to indoor units that are connected by crossover wiring.
Connect an indoor unit having the highest functions among the group to the outdoor unit assigned to refrigerant address "0". <Refer to the example
given below> If indoor units with vanes are used with those without vanes, connect the outdoor unit to a unit with vanes.
Function specifications <Example>
Item
Fan Number of fan speeds
Up/down Presence / absence
vane Swing function
Left / right swing louver Presence / absence
In the case of free component multi type systems consisting of simultaneous twin units, the indoor units should not be connected by crossover
wiring. (Prohibited)
Outdoor unit address setting
For group control, an address must be set for each outdoor unit.
To set addresses to outdoor units, use the DIP switch SW1 (3–6) provided on each outdoor control board (factory setting: all are set to "OFF").
Address setting by SW1 is as follows.
Function
1
Forced defrosting
2 Error history clear
SW1
3 Refrigerant address setting
Function
4
selection
5
6
* Checking the outdoor unit refrigerant addresses
To find the location of an outdoor unit with a specific refrigerant address, specify the address in self-diagnosis mode. The outdoor
unit will operate intermittently. (For details on using self-diagnosis mode.)
Group operation by multiple remote controllers
Up to two remote controllers can be connected to each group. For details, refer to "2. TWO-REMOTE CONTROLLER OPERATION".
62
Standard 1:1 2
OC-A
Indoor/outdoor
3(2)
connection cable
IC-A
Remote
controller
2
cable
R
OC-A
Indoor/outdoor
3(2)
connection cable
IC-A
Receiver
9
connection
cable
R'
* Numbers given in ( ) apply when power is supplied to the indoor and outdoor units separately.
4-way ceiling cassette
PLA-A.AA
4
Operation by switch
ON
Start
Clear
Used to set outdoor unit addresses
("0" to "15").
OC-B
3(2)
IC-B
Remote
2
controller
crossover
wiring
OC-B
3(2)
IC-B
Remote
2
controller
crossover
wiring
Ceiling
suspended
PCA-A.GA
4
OFF ON
<SW1>
1
OFF
2
OFF ON
0
3
Normal
1 4
5
2
6
Normal 3
4
5
6
OFF ON
1
2
8
3
4
5
6
Factory setting: All switches are set to OFF (i.e., refrigerant address "0").
Standard 1:1 + Simultaneous Twin
OC
OC-A
3(2)
3(2)
IC-B1
IC-A
2 2
R
OC-A OC
3(2)
3(2)
IC-A IC-B1
2
9
R'
Wall mounted
PKA-A.GA(L)
4
Refrigerant address No.
OFF ON OFF ON OFF ON OFF ON OFF ON
1 1 1 1 1
2 2 2 2 2
1 2 3 4 5
3 3 3 3 3
4 4 4 4 4
5 5 5 5 5
6 6 6 6 6
OFF ON OFF ON OFF ON OFF ON OFF ON
1 1 1 1 1
2 2 2 2 2
9 10 11 12 13
3 3 3 3 3
4 4 4 4 4
5 5 5 5 5
6 6 6 6 6
3(2)
IC-B2
3(2)
IC-B2
PKA-A.FA(L)
2
OFF ON OFF ON
1 1
2 2
6 7
3 3
4 4
5 5
6 6
OFF ON OFF ON
1 1
2 2
14 15
3 3
4 4
5 5
6 6