Unigas TN90, Manual Of Installation - Use - Maintenance

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M12927CA
17
ERROR MESSAGES
The upper display shows the OVER-RANGE and UNDERRANGE conditions with the following indications:
Over-range:
Under-range
The sensor break will be signalled as an out of range:
Note: When an over-range or an under-range is detected, the alarms operate as in presence of the maximum or the
minimum measurable value respectively.
To check the out of span Error condition, proceed as follows:
1. Check the input signal source and the connecting line.
2. Make sure that the input signal is in accordance with the instrument configuration. Otherwise, modify the input
configuration.
3. If no error is detected, send the instrument to your supplier to be checked.
List of possible errors
ErAT Fast Auto-tune cannot start. The measure value is tooclose to the set point. Push the button in order to delete the
error message.
ouLd Overload on the out 4. The messages shows that a short circuit is present on the Out 4 when it is used as output
or as a transmitter power suply. When the short circuit disappears the output restart to operate..
NoAt Auto-tune not finished within 12 hours.
ErEP Possible problem of the instrument memory. The messages disappears automatically. When the error continues,
send the instrument to your supplier.
RonE Possible problem of the firmware memory. When this error is detected, send the instrument to your supplier.
Errt Possible problem of the calibration memory. When this error is detected, send the instrument to your supplier.
FACTORY RESET
Sometime, e.g. when you re-configure an instrument previously used for other works or from other people or when you
have made too many errors during configuration and you decided to re-configure the instrument, it is possible to restore
the factory configuration. This action allows to put the instrument in a defined condition (the same it was at the first power
ON).
The default data are those typical values loaded in the instrument prior to ship it from factory. To load the factory default
parameter set, proceed as follows:
1. Press the button for more than 5 seconds. The upper display will show PASS while the lower display
shows 0;
2. Using and buttons set the value -481;
3. Push button;
4. The instrument will turn OFF all LEDs for a few seconds, then the upper display will show dFLt (default) and
then all LEDs are turned ON for 2 seconds. At this point the instrument restarts as for a new power ON.
The procedure is complete.
Note: The complete list of the default parameters is available in Chapter "Configuration".