22
Operating instructions 0020262548_01
Setting level
Values
Unit
Increment, select
Default setting
Min.
Max.
Everything
Yes
,
No
No
Installer level
→
Enter code
000
999
1
000
B
Troubleshooting
Symptom
Possible cause
Measure
Display remains dark
Software error
1.
Switch off the mains switch on all heat generators for ap-
prox. 1 minute and then switch them on again.
2.
If the fault persists, inform the competent person.
No changes in the display when
the rotary knob is turned
Software error
1.
Switch off the mains switch on all heat generators for ap-
prox. 1 minute and then switch them on again.
2.
If the fault persists, inform the competent person.
No changes in the display
when the selection buttons are
pressed
Software error
1.
Switch off the mains switch on all heat generators for ap-
prox. 1 minute and then switch them on again.
2.
If the fault persists, inform the competent person.
Display view:
Button lock act-
ive To unlock, press OK for
3 seconds
, it is not possible to
change the settings or values
Button lock is active
1.
If you would like to change any of the values, follow the in-
structions on the display.
2.
Also read through the
Button lock
Activate (
function.
Display view:
Restricted opera-
tion/ comfort protection
, insuf-
ficient heating up of the heating
and the domestic hot water
Heat pump does not work
1.
Inform the competent person.
2.
Select the setting for limp home mode until the competent
person arrives.
3.
To do this, read through the Implementing the setting when
the heat pump fails (
Page 17) function.
Display view:
Fault F. Fault:
Heat generator 1
, the specific
fault code (e.g. F.33) and the
specific heat generator appear
behind F. in the display
Heat generator faults
1.
Carry out a
Reset
fault message (
2.
If the fault persists, inform the competent person.
C
Maintenance messages
The maintenance message
Service heat pump 1
is an example of a maintenance message that may appear for heat pumps
1 to 7.
The maintenance message
Service heat generator 1
is an example of a maintenance message that may appear for heat
generators 1 to 7.
#
Code/meaning
Description
Maintenance work
Interval
1
Service heat
pump 1
The heat pump requires main-
tenance work.
Refer to the operating instruc-
tions of the relevant heat pump
for information on the mainten-
ance work required
See the operating instructions
for the heat pump
2
Service heat
generator 1
The heat generator requires
maintenance work.
Refer to the operating instruc-
tions of the relevant heat gener-
ator for information on the main-
tenance work required
See the operating instructions
for the heat generator
3
Service ventila-
tion unit
The ventilation unit requires
maintenance work.
Refer to the operating instruc-
tions of the ventilation unit for
information on the maintenance
work required
See the operating instructions
for the ventilation unit
4
Low water pres-
sure
The water pressure is too low in
the heating installation.
Refer to the operating instruc-
tions for the relevant heat gen-
erator for information on filling
with water
See the operating instructions
for the heat generator
5
Service date
Next service on
The competent person has
entered a date on which main-
tenance is due for the heating
installation.
Inform the competent person if
maintenance work is required
Date entered in the control
