18
EN
1.5
Fault / malfunction codes
If a fault/malfunction is detected during boiler operation, the
message
“ALL”
will appear on the display followed by the fault
code (eg.
“06”
- no flame detected).
If the message
d
also appears, press and hold the
button
y
for more than 3 seconds and check that the nor-
mal operating conditions are restored.
If this operation is not successful,
ONLY ONE MORE ATTEMPT
can be made, therefore:
– close the gas isolation valve
– set the main system switch to "OFF"
– contact the Qualified Technical Personnel.
OFF
Fig. 3
m
CAUTION
The table with the fault codes and the corresponding
description is provided in the specific section of the
INSTALLATION AND MAINTENANCE MANUAL.
2 SHUTDOWN
2.1
Temporary shutdown
If the user wishes to interrupt boiler operation, press and hold
the button
y
for at least one second, once if in "WINTER
mode"
n
or twice if in "SUMMER mode"
l
.
“- -”
will appear
on the display.
f
DANGER
The boiler will still be powered.
If the user is away temporarily, for a weekend, short trip etc
and if the outside temperature is at ZERO:
– press and hold the button
y
once if in "WINTER mode"
n
or twice if in "SUMMER mode"
l
to put the boiler into
stand-by
– set the main system switch to "OFF"
– close the gas valve.
OFF
Fig. 4
m
CAUTION
If the outside temperature might fall below ZERO,
since the appliance is equipped with an "antifreeze
function"
– ONLY PUT THE BOILER INTO STAND-BY
– leave the main system switch set to "ON" (boiler
is powered)
– leave the gas valve open.
2.2
Shutting down for long periods
If the boiler is to be left unused for a long period, the following
operations need to be carried out:
– press and hold the button
y
for at least 1 second, once if
in "WINTER mode"
n
or twice if in "SUMMER mode"
l
to
put the boiler into stand-by
“- -”
will appear on the display
– set the main system switch to "OFF"
OFF
Fig. 5
– close the gas valve
– close the heating and domestic hot water isolation valves
– drain the heating and domestic hot water system if there is
the risk of freezing.
m
CAUTION
Contact the Qualified Technical Personnel if the pro-
cedure described above cannot be easily carried out.
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