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Page 26 of 33
No.
Text
Type
Action
Description
5
DATABASE
I
--
The control unit has been reset to the factory setting
and requires a renewed default setting. This occurs,
for example, if software is updated with a new pro-
gram that differs significantly from the old one.
- Make the desired settings via the menu system
10 T1 OPEN
C
STOP
Central heating temperature sensor disabled
- Check connection. Replace sensor if necessary
11 T1 SHORT
C
STOP
Central heating temperature sensor disabled
- Check connection. Replace sensor if necessary
12 T2 OPEN
C
STOP
Domestic water temperature sensor disabled
- Check connection. Replace sensor if necessary
13 T2 SHORT
C
STOP
Domestic water temperature sensor disabled
- Check connection. Replace sensor if necessary
14 T3 OPEN
W
7°C presumed
Outside temperature sensor disabled
- Check connection. Replace sensor if necessary
15 T3 SHORT
W
7°C presumed
Outside temperature sensor disabled
- Check connection. Replace sensor if necessary
16 T4 OPEN
W
Deactivate room
control
Brine temperature sensor disabled
- Check connection. Replace sensor if necessary
17 T4 SHORT
W
Deactivate room
control
Brine temperature sensor disabled
- Check connection. Replace sensor if necessary
32 LOW PRS
C
Stop compressor
auxiliary heating
takes over heat-
ing
Low pressure alarm. The heat pump will start auto-
matically two minutes after the alarm has
disappeared.
33 HIGH PRS
W
Stop compressor
auxiliary heating
takes over heat-
ing
High pressure alarm. The heat pump will start auto-
matically 2 minutes after the alarm has disappeared.
See also Alarm 34.
34 RESTART
C
Stop compressor
auxiliary heating
takes over heat-
ing
Safety shut-off from compressor high pressure. After
three high-pressure alarms (code 33) within 12 hours,
alarm 34 is triggered. Alarm 34 includes manual re-
set. The compressor will not restart until you have
acknowledged Alarm 34 in the Alarm Menu.
34 RESTART
W
Aux heating
takes over after 5
mins.
Safety shut-off from compressor high pressure and
low pressure
- Compressor restarts when user acknowledges the
alarm
50 FROST
W
Circulation
pumps are start-
ed.
Temperature for domestic water, central heating or
room sensor has fallen below 2°C for more than two
hours. Frost protection function is active
53 LÆK
W
Aux. heatin takes
over after 5 mins.
Ground pipe environmental pressure switch
- Check system for leaks
54 OVERHEAT
C
STOP
Forward or domestic water overheated to 90°C or
more
- Check relays and contacts to compressor and auxil-
iary heating
70 LEGIO
I
--
The Legionella function has not been performed with-
in the deadline in two successive weeks.
- Insufficient heat energy supplied from brine or auxil-
iary loop
Table 1: List of Alarms
