Mitsubishi Electric PU(H)Y-P250YGM-A Service Handbook page 36

1) Indoor/outdoor transmission line
Same as [4] 1.
2) MA remote controller wiring
[When 2 remote controllers are connected to the system]
When two remote controllers are connected to the system, connect terminals 1 and 2 of the terminal block (TB15)
on the indoor unit (IC) to the terminal block on the MA remote controllers (option).
Set the Main/Sub switch on the connected MA remote controllers (option) to SUB.(See the installation manual for the
MA remote controller for the setting method.)
3) Switch setting
Address setting is required as follows.
Pro
ce-
Unit or controller
du-
res
1 Indoor Main unit IC
unit
Sub unit
2 Outdoor unit
3 MA Main
remote remote
controller controller
Sub
remote
controller
Wiring method/address setting method
Address-
settin-
grange
01 to 50 Assign a sequential odd number
starting with "01" to the upper indoor
controller.
IC 01 to 50 Assign sequential numbers starting
with the address of the main unit in
the same group. (Main unit address
+1)
OC 51 to 100 Add 50 to the address assigned to
the indoor unit connected to the sys-
tem with one outdoor unit.
MA No set-
tings re-
quired.
MA Sub Settings to be made with the sub/
remote main switch
controller
Setting method
-
- 27 -
[ II Restrictions ]
Facto-
Notes ry set-
ting
00
00
Main