Mitsubishi Electric G-50A Instruction Book page 4

2. Each group can be specified by its name.
(Alphanumerical characters can be used for the group name.)
3. Group names can be copied to the settings for the other groups.
4. The group configuration settings and the group names can be set as long as power is supplied to the central
controller, even if indoor units have not been connected.
5. When the system configuration was changed, the system configuration data on the central controller can be
erased all at once if necessary.
(2) Refrigerant system monitoring
The addresses of all the units (indoor, outdoor, etc.) in each refrigerant system can be displayed on this screen.
This information is useful for checking the address setting, transmission line connection, and power supply con-
nection.
(3) Interlocked operation setting
Make this setting to perform an interlocked operation of one or more of the indoor units and a ventilation unit. The
interlocked ventilation unit will go into operation when one of the indoor units that is interlocked with it goes into
operation.
(4) Malfunction log
1. The log of the central controller will be kept for the last 64 errors.
2. Information about the date/time of error occurrence, address of the error-source unit, error code, and the address
of the unit that detected the error will be displayed on the screen.
3. The log of the central controller and indoor units can be deleted all at once with the reset button.
[3] Miscellaneous
(1) Entire-system status lamp (Operation/Stop)
Displays the status of the entire system (Normal operation, all OFF, and malfunction status are indicated with a lit,
unlit, blinking lamp respectively).
(2) Collective ON/OFF switch
This switch turns all of the units in the system ON or OFF at once.
(3) Power supply wiring
Power to the central controller is supplied from the PAC-SC50KUA unit through the M-NET transmission line of DC
power line. The length of the DC power line between the PAC-SC50KUA power supply unit and the central control-
ler must not exceed 10 m.
The central controller can be connected to anywhere on the M-NET transmission line. (M-NET transmission line is
a central control line that is connected to the TB7 on the outdoor unit.)
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