Alarms
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17 Alarms
17.1 Alarms
This section includes:
• Alarm log ( Chapter 16.10).
• Delete alarm log
• Alarm history (Chapter 16.10).
17.2 Control unit and room sensor alarm
lamp
The status lamp on the control unit is used to show ON/
OFF status for the heat pump but also to show possible
alarms. The status lamp is therefore also called alarm
lamp.
In the event of an alarm the alarm lamp flashes red
(control unit) until the warning cause has disappeared.
The alarm lamp is not used for warning alarms.
The room sensor alarm lamp can be blocked.
The alarm lamp of the CANbus sensor shows the same
information as the alarm lamp of the control unit.
Other room sensors flash with low-frequency red light in
the event of alarms; the lamp is otherwise off.
17.3 Alarm display
When an alarm/warning occurs, the display shows
information about what has happened. At the same time,
information is saved in the alarm log and alarm history.
17.4 Alarm buzzer at alarm
When there is an alarm, the alarm buzzer on the heat
pump and the CANbus-connected room sensor sounds
for a second per set alarm interval. The alarm buzzer can
be blocked for a certain part of the day or completely.
In the event of a warning alarm, the alarm buzzer does
not sound.
17.5 Acknowledgement of alarms
Acknowledgement means that you have to press to
make the alarm window disappear. What happens after
acknowledgement is described in the respective alarm
description.
In most cases, warnings do not have to be
acknowledged. The alarm window disappears by itself
once the warning cause has disappeared. It is, however,
possible to acknowledge the warning.
17.6 Alarm timer, alarm mode
In the event of an alarm that stops the compressor the
control unit starts a timer at 1h. If the fault does not
recur additional heat may start when the timer has
counted down.
Behaviour Function
The lamp lights
green continu-
ously.
The heat pump is running.
The lamp
flashes red
There is an alarm which has not
been acknowledged
The lamp lights
red continu-
ously.
The alarm has been acknowl-
edged but the alarm cause
remains
Lamp flashes
green slowly
The heat pump is in stand-by
mode
1)
1) Stand-by means that the heat pump is running but no
heating or hot water demand exists.
Tab. 186 Alarm lamp control unit
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