Multitron - Operating Manual
Operation
20 August 2020
Page
87
of
158
7.3.3
Error, Warning, and Alarm Signs
Between the upper and the lower alphanumeric display area there is
a separate field with various signs associated with error, warning, and
alarm messages.
The big red general symbol for warnings lights up in connection with
error messages and alarms to emphasise the importance of the mes-
sage.
It always flashes up when the setpoints are changed to avoid mis-
takes. The warning symbol also lights up, if somebody tries to enter a
setpoint value or tapping the
ON/OFF
key without tapping the
SET
key first. In addition, it also appears if someone tries to enter an inva-
lid setpoint value.
The sign
ALARM
appears in connection with other signs like
ERROR
,
High
or
Low
and it indicates that there is a problem with the device.
In addition, there will be an acoustic alarm.
The sign
ERROR
indicates that an error occurred in the operation of
the device which provoked an error message.
In connection with the sign
ERROR
there are often messages on the
alphanumeric display which give some more detailed information on
what happened. For the according abbreviations (see chapter 8 "Rec-
tifying Faults", page 118).
The sign
EXTERN
lights up when the device is controlled externally
(e.g. by means of a bioprocess software).
The sign
RESTARTED
indicates that the device had been disconnected
from the power supply and did restart automatically on the basis of
the saved parameter setpoints.
