Operating manual 27.09.2011 CC Heating Thermostats - HUBER

Display Error Messages
Alarms and Warnings
If an error occurs, the unit will display an alarm or warning message in clear text on the
graphic display (60). Each error is allocated an error code.
Errors are separated into three categories:
Hard alarms (error codes -1 to -1023)
When a hard alarm occurs, temperature control is immediately stopped. The unit must
be turned off, using the main switch (36) and the error condition corrected. The unit
can then be turned on again. If an alarm occurs during the unit start up and self-test,
please contact Huber for advice.
Soft alarms (error codes -1024 to -2047)
These alarms also cause the temperature control to be immediately stopped. After
clearing the error condition temperature control can be restarted without cycling power
to the unit.
Warnings (error codes -2048 to -4095)
These warnings do not stop temperature control, and give important information about
the condition of the unit, its environment, or the application. If steps are not made to
correct the cause of the warning, there is the risk that an alarm condition may arise, for
example if a condition causes the unit to exceed an alarm limit, or temperature.
Once an alarm or warning is acknowledged a symbol will be shown in the upper left
corner of the graphic display. A STOP sign indicates the presence of an alarm message,
a warning triangle (black exclamation mark on a yellow triangle) indicates the presence
of a warning message. By lightly touching the symbol on the touch-screen, a list of the
stored messages will appear in place of the graphic display. The messages are stored
and displayed in time / date order. The rotary knob / key (61) and buttons can be used
to step through the messages in order, and display their corresponding text messages.
System Messages
These messages give the user more general information, such as the attempted entry of
an invalid input, or set-point. These messages do not generate an alarm. Each message
should be acknowledged when it occurs, so as not to cover up the normal display
screen. A message does not lead to an interruption of the operating mode which is
being performed at the time message is given out.
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