Mitsubishi Electric MN converter Operating Manual page 138

Trouble with Main Screen
Trouble
Cannot select function selection buttons.
A[**]appears in the unit address button
for an existing unit.
A[**]appears in the unit address button for
a unit that does not exist.
A[??]appears in the address button.
Address searching takes 3 minutes or
more per set. (G-50A connection)
Connecting information Trouble
Trouble
Cannot switch to connection information
screen.
The connection data display does not
appear when the operating system SC is
clicked.
Cause
Collecting data about individual units
using manual search. (Unit is
communicating.)
-No response from that unit.
-Attributes cannot be known due to
communication error.
Interference caused an non-existing unit
to appear.
There is a unit that is not compatible with
the Maintenance Tools.
The port required for communication is
being protected by the Firewall checking
function of Windows or anti-virus software.
When a Maintenance Tool is not ended
normally, G-50A will be in a data
resending state, and LAN communication
will increase.
The version of G-50A is old.
Cause
A unit other than an outdoor unit (OC) has
been selected.
An operating SC other than remote control
has been clicked.
137
Repair
Can be used when communication with all
the units selected by manual search have
completed communication.
Wait a moment and then click on the
address button for the same unit again.
Wait a moment and then click on the
address button for the same unit again.
The[**] display will disappear.
Refer to the explanation on terminology in
help.
If there is no explanation, the unit is not a
compatible type.
In this case, the communication
transmitted from G-50A may not partially
be received. Please remove the check
mark on the Firewall function of the
necessary port. (For detail, please refer to
"6. How to change setting of Firewall".) (If
the version of G-50A is more than 2.50,
only [IC] can be searched, even if it uses
FIREWALL. However, [OC] reference
cannot be performed. Moreover, since
other functions cannot operate normally,
please be sure to remove a check.)
In this case, please perform "Stop mail
communication" of 3.4 (2), and start a
Maintenance Tool again after waiting
about 15 minutes.
A recommendation version is 2.50 or
more.
Repair
Refer to 3.6.1
Click on remote control.
Monitoring of connection data cannot be
done from operating SC other than remote
control.