38
Cause Remedy
Symbols and are shown, and
message code 0C, A0, CC, F10, F18,
F30, F38, F51, F59, F70, F78, F80, F88,
F90 or F98 is flashing.
Notify your heating contractor.
Note
The type of lock-out described here can-
not be reset by the system operator
.
No fuel. Open the gas shut-off valve.
If necessary
, check with your gas supply
utility.
The DHW is too hot
Cause Remedy
The control unit is set incorrectly. Check the DHW temperature and cor-
rect it if required (see page
28).
The DHW is being heated by the solar
thermal system.
Notify your heating contractor.
Symbols and are shown
Cause Remedy
Maintenance reminder
Symbols and are shown, is flash-
ing.
Notify your heating contractor to arrange
a boiler service.
Y
ou can deactivate the display for 24
hours by pressing OK.
Note
Please note that regular servicing in-
creases the service life of the product
and significantly reduces gas consump-
tion.
What to do if...
There is no hot water (cont.)
5837147
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