Repair work at the humidifying and dehumidifying system
9.1.8 Notifying and alarm system overview (auto diagnosis system)
The unit provides notification and alarm functions indicating messages in up to three steps:
1. Visual indication of notifying or error messages as blue notes on the screen of the controller MB1.
2. Visual indication of alarm messages as red notes with an alarm bell symbol. After a delay time, some
notes change their color from blue to red.
Additionally there is an audible alert, provided that the buzzer has not been deactivated in menu
“User level”.
3. Zero-voltage relay outputs (option) permit transmission of the alarm e.g., to a central monitoring system.
Event
Alarm
(red field)
Zero-voltage re-
lay alarm out-
In case of freshwater supply via wa-
ter pipe: the water tap is closed, or
the unit is defective.
In case of freshwater supply via
freshwater can (option): Water can
is empty. Humidification is switched
off. In case of refrigerating opera-
tion, the interior is strongly dehu-
midified. When the water supply is
functional again, the humidity sys-
tem restarts working, or the unit is
after 60 sec.
Temperature deviation of more than
+/- 2°C of the entered set-point
Humidity deviation of more than +/-
5 % r.H. of the entered set-point
after 16 min.
Exceeded temperature limit of the
safety controller
TEMPERATURE LIMIT
immediately
Humidity system switched off with
switch (4)
With option temperature safety device class 3.3
Exceeding the maximum or mini-
With option locking of the keyboard (BINDER Individual)
The indicated intervals refer to the time after occurrence of the error or indicated condition.
(blue field)
Service Manual KBF (E5.2) 04-2015 103
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