Mitsubishi Electric PUHY-P-YJM-A Data Book page 92

1Address Setting
The need for address settings and the address setting range depend on the system configuration.
See "4. An Example of a System to which an MA Remote Controller is connected" for details.
Unit or controller
Indoor unit Main/Sub
MA remote controller
Outdoor unit
Centralized
controller
System remote
controller
Schedule timer
System (M-NET compatible)
controller ON/OFF remote
controller
Group remote
controller
LM adapter
Note 1: If an address is a duplicate of an indoor unit or outdoor unit of another refrigerant circuit system, set it to another address, which is within the setting range and is
not in use.
Note 2: To set the address of an outdoor unit to
Note 3: The outdoor units OC and OS of the same refrigerant circuit system are differentiated automatically.
The order of OC and OS becomes from the one with the highest capacity. (If the capacity is the same, the order is from the one with the lowest address.)
Note 4: Two control boards are installed on P750-F and P900-F indoor units. Be sure to assign an address to the No.1 and No. 2 control boards so that the No. 2
control board address equals the No.1 control board address plus 1.
✻ 1
P250, P500 P750
P300-F, P600-F P900-F
No.1=00 No.1=01
No.2=02
2Connection of the power jumper on the outdoor unit (Factory setting: Power jumper is connected to
CN41.)
Connection to the
System configuration
system controller
Single refrigerant
circuit system
3Setting the central control switch for outdoor units
System configuration
Without connection to the system controller
With connection to the system controller (Note 1)
(Note.1) When only the LM adapter is connected, leave DIP SW2-1 to OFF as it is.
(Note.2) Set SW2-1 on all outdoor units in the same refrigerant circuit to the same setting.
4Selecting the sensor for indoor temperature detection (Factory setting: SW1-1 is set to OFF.)
To use the built-in sensor on the remote controller, set the DIP SW1-1 to ON.
✻ Some models of remote controllers do not have a built-in temperature sensor.
Use the built-in temperature sensor on the indoor unit instead.
✻ When using the built-in sensor on the remote controller, install the remote controller where the room
temperature can be detected.
5Main/Sub setting on the MA remote controller "When the MA remote controller is used (Factory
setting: Main)"
The MA remote controller has a Main/Sub setting. To connect two controllers to a system, one of
them should be set to Sub.
6For the models which has more than one control board in an indoor unit, make SW1-1/SW3-8
settings of all control boards to be exactly the same.
Address setting
Mark
range
01 to 50 For the indoor units of the same group, set the lowest address for the indoor unit
IC
Note 1,4 to be used as the main, and set consecutive numbers for the addresses of indoor units.
An address does not need to be set. (However, when operation is to be performed with two remote
MA
controllers, the main/sub selector settings need to be set.)
Set an address equivalent to the lowest indoor unit address in the same refrigerant circuit
OC 51 to 100
system + 50. Set consecutive numbers for the addresses of outdoor units in the same
OS Note 2
refrigerant circuit system. OC and OS are differentiated automatically. (Note 3)
TR, SC 0, 201 to 250 Any address within the address range on the left.
SR, SC 201 to 250 Any address within the address range on the left.
ST, SC 201 to 250 Any address within the address range on the left.
AN, SC 201 to 250 Set an address that is the smallest group number you want to control + "200".
GR, SC 201 to 250 Set an address that is the smallest group number you want to control + "200".
SC 201 to 250 Any address within the address range on the left.
"100," set it as 50.
Power supply Group operation of the indoor units connected to
device different outdoor units
Setting procedure
Central controller switch settings (SW2-1) (Note 2)
Leave it to off. (Factory setting)
89
Address set at
time of shipment
Model
✻ 1
Main
00
000
201
202
201
247
Connection of the power
jumper on the outdoor unit
Leave the power jumper
on CN41 as it is.
ON