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What to do if a fault occurs
The control unit has an advanced monitoring system that gives alarms if
anything unforeseen happens. Most alarms correct themselves. There is never a
risk of affecting something when you reset an alarm once or twice. In the event
of recurring alarms, contact your dealer/service technician.
Dimmed menu display
Possible cause 1: Blown fuse in the house’s fuse box/distribution box.
Action: 1. Check the fuses in the house’s fuse box.
2. Replace the fuse / reset the circuit breaker if necessary.
3. The heat pump automatically returns to operating mode
within 15 minutes after the fault has been rectifi ed.
Possible cause 2: Glass fuse in the control cabinet or in electric boiler
290 A/W has blown.
Action: 1. Contact your dealer.
Emergency operation
On the inside of the control cabinet (in case of electric cassette or mixed
additional heat) there is a switch that lights green during normal operation.
If a fault occurs in the control unit and heating production stops, emergency
operation can be activated manually using the switch, which then goes out.
Emergency operation can also be activated automatically (and then the switch
lights anyway).
Emergency operation is also available for the electric element in 290 A/W, see
the user guide for 290 A/W.
Additional heat takes over the heating production during emergency operation.
Heating can therefore be obtained until the dealer or authorised service techni-
cian has remedied the fault.
This function must not be confused with Alarm mode, which means that the
compressor stops, for safety, due to an active alarm. Heating production is still
controlled by the control unit.
Alarm cause
Date when
the alarm
occurred
Time when the alarm occurred
Example of an alarm:
When an alarm is triggered, an alarm window is displayed and a warning
signal sounds. The alarm window displays the alarm cause and the time and
date that the alarm occurred.
When you press the menu dial and Acknowledge is marked, the alarm
symbol disappears from the menu window and the alarm log, and the
warning signal is muted. The heat pump starts again within 15 minutes if
heating is required. If the fault has not been rectifi ed the lamp will remain
lit and the status lamp will stop fl ashing red and will light red continuously.
Should several alarms have occurred on the heat pump, view the alarm log
where all alarms are listed. For active alarms, the alarm symbol is lit.
What to do if a fault occurs
Alarm symbol
Note
If you have deactivated the alarm
buzzer under Advanced menu no
warning signal is heard.