Mitsubishi Electric Mr. Slim MSH09NW, Service Manual

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The P.C.board has the print “J1” and “J2”. Jumper wires are mounted to each “J1” and “J2”. Cut “J1” and “J2” according to
the number of indoor unit as shown in Table 1.
After modification, push the RESET button near the MIN-button on the remote controller.
NOTE : For remodeling, take out the
batteries at first.
After finish remodeling, put
back the batteries then
push the RESET-button.
Table.1
Note :
At power supply failure or installation, indoor unit deletes the memory about remote controller. When the
power supply is turned on and indoor unit receives the first signals from the remote controller, the remote
controller number is designated as the indoor unit number. Therefore at and after the second time indoor
unit accepts the remote controller of the initial setting number.
At setting-error, turn the power supply off to cancel the individual operation, and then turn the power supply
on to restart the setting.
5. P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATION
A maximum of 4 indoor units with wireless remote controllers can be used in a room.
In this case, to operate each indoor unit individually by each remote controller, P.C. boards of remote controller must be
modified according to the indoor unit number.
How to modify the remote controller P.C. board
Remove batteries before modification.
The board has a print as shown below :
No,1 unit
No,2 unit
No,3 unit
No,4 unit
1 unit operation
No modification
–
–
–
2 unit operation
Same as at left
Cut J1
–
–
3 unit operation
Same as at left
Same as at left
Cut J2
–
4 unit operation
Same as at left
Same as at left
Same as at left
Cut both J1 and J2
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