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Appendix
A Troubleshooting, maintenance message
A.1 Troubleshooting
Symptom
Display remains dark
No changes in the
display can be made
via the control ele-
ments
Display: F. Boiler
fault, the specific fault
code (e.g. F.33) with
the specific boiler is
shown in the display
Display: You do not
understand the set
language
A.2 Maintenance messages
#
Code/mean-
Description
ing
1
Water defi-
The water pressure is
ciency: Fol-
too low in the heating
low the in-
installation.
structions
in the heat
gen.
0020323648_01 Operating and installation instructions
Possible cause
The batteries are flat
Software error
Software error
Boiler fault
Incorrect language set 1.
Maintenance work
Refer to the operat-
ing instructions for the
relevant heat gener-
ator for information on
filling with water
Measure
1.
Change all the batteries. (→ Page 19)
2.
If the fault persists, inform the competent
person.
1.
Press and hold the button on the top right
of the control for longer than five seconds
in order to force a restart.
2.
Switch the mains switch on the heat gen-
erator that feeds the control off and back
on again.
3.
If the fault persists, inform the competent
person.
1.
Press and hold the button on the top right
of the control for longer than five seconds
in order to force a restart.
2.
Switch off the mains switch on all heat
generators for approx. 1 minute and then
switch them on again.
3.
If the fault message persists, inform the
competent person.
1.
Reset the boiler by first selecting Reset
and then Yes.
2.
If the fault message persists, inform the
competent person.
Press
twice.
2.
Select the last menu item (
TINGS) and confirm by pressing
3.
Under
SETTINGS, select the second
menu item and confirm by pressing
4.
Select the language that you understand
and confirm by pressing
Interval
See the operating
instructions for the
heat generator
SET-
.
.
.
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