MITSUBISHI ELECTRIC WT03939X20 - Manual (Page 139)

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Operation Monitor Trouble
Trouble Cause Repair
The monitor display screen on the
operation monitor has red characters. Because of the increased re-transmission
process work due to abundant
communication noise, data may not be
monitored fully within the rated cycle. Please take a countermeasure against the
communication noise source in this case.
All of the characters on the monitor
display for some units are red. There is no answer from the unit.(Cannot
communicate with the unit.) Error with unit.
Refer to the service handbook for that
unit.
The dial-up router is not connected. Or
connected but incorrectly. By referring to Instruction Manual of
Dial-up router, connect or set correctly.
The default gateway of G-50A is not set. Set correctly by using the G-50A initial
setting tool. (Refer to Instruction Manual
of G-50A initial setting tool.)
The incorrect display of the receiver
address is pointed out by SMTP. Set the correct mailing address.
The message of ” G-50A can't Connect to
SMTP Server !
or G-50A Date Setting is wrong !!
Continue ?” is displayed at remote monitor
setting.
The Monitor Finish Date is older than the
current date/time of G-50A. Set the monitor finish date correctly.
(However when connecting to G-50A in a
region with a time differential, set it by
considering the time in that place.)
A message of " Monitor data size is very
large!! Please, delete old monitor data!!" is
displayed during collecting data. The memory capacity to store data is
insufficient. Move to Offline Screen, and delete
unnecessary data.
Data becomes a red display and the "-"
display. Since data cannot receive normally.
- There is too much number of a monitor.
- Data transforms itself by a noise. - Reduce the number of a monitor.
- Cope with noise generating origin.
* Also when returning from a graph screen
to an operation screen, it may become a
red display and the "-" display, but it is
normal.
Malfunction Log Trouble
Trouble Cause Repair
Cannot clear malfunction log The unit is not compatible with malfunction
log clear. The malfunction log cannot be cleared.
There is an error code, but the contents of
the error are not displayed This is a newly added error code and is
not compatible with the Maintenance
Tools. Refer to the service handbook for that
unit.