Mitsubishi Electric PAC-SF44SRA Installation Manual page 3

(2) When connecting to indoor and outdoor transmission line
Up to three system controllers can be connected to the M-NET transmission line's indoor and outdoor transmission line.
A power supply unit is not required in this case, but the short-circuit connector of one of the connected outdoor units must be
connected to CN40.
When the system remote controller is connected to the indoor and outdoor transmission line, the number of indoor units
NOTE :
that can be connected in that refrigerant system will be reduced by two.
When connecting the system controller to the indoor and outdoor transmission line, operations from the
system controller will be disabled if the outdoor unit's power is turned OFF, etc.
CAUTION
Interchange
short-circuit
SW2-1[ON]
connector from CN40
ON
CN41 to CN40.
OFF
[051]
1 2 3 4 5 6 7 8 9 10
TB7 TB3
* Outdoor unit
: SW position
Leave as is
SW2-1[ON]
CN41
ON
OFF
[052]
1 2 3 4 5 6 7 8 9 10
TB7 TB3
ON/OFF
Schedule Timer
remote controller
PAC-YT34STA
PAC-YT40ANRA
[201] [202]
(3) Setting the various M-NET addresses
The need for address settings and the address setting range will differ according to the system configuration. (The address can-
not be set in duplicate).
System controller Address setting range
ON/OFF remote controller
System remote controller
Schedule timer
(4) Setting the system controller address
Rotary switch
SW 2
10
Example: Address of 201
Remote controller main unit
(5) When using with master system controller
When connecting multiple system controllers, the system controller with many functions is designated as the "master", and the
system controllers with few functions are designated as the "slaves". The "master/slave" functions of the system controller used
together are as follows.
The functions have a priority in order of G50A (MJ-103MTRA) > PAC-SF44SRA > PAC-YT34STA > PAC-YT40ANRA > PAC-SC30GRA > LMAP02-E.
System remote controller (44SRA)/Schedule timer (34STA)
Master side
Slave side
* The switch is set to "Master" as the factory setting.
[001] [002]
[101] [102]
Group 1 Group 2
[005]
System
[105]
Remote Controller
PAC-SF44SRA
Group 4
[203]
Setting method
201 to 250 Set to the minimum group No. to be controlled + "200"
201 to 250 Random within address range shown on left
201 to 250 Random within address range shown on left
When setting the address, prepare a precision screwdriver
[( ), 2.0mm (w)], and keep the applied load to less than
19.6N.
CAUTION
SW 1
Setting with other methods could damage the rotary switch.
¥ The address No. that can be set on the remote controller is
NOTE :
within the range of 201-250.
1
The 100 digit is fixed at "2".
¥ If an address other than those listed above is set, an address
setting error occurs and "AdE" is displayed.
SW3-1: OFF
SW3-1: ON
[003] [004] [009]
[103]
Group 3
[006] [007] [008]
[106] [107] [108]
Group 5 Group 6 Group 7
Default address setting
201
201
202
ON/OFF remote controller (40ANRA)
SW4-1: OFF
SW4-1: ON
!