20
EN
1.5
Fault / malfunction codes
If a fault/malfunction is detected during boiler operation, the
message "AL" will appear on the display followed by the fault
code (eg. "06" - no flame detected).
If the message "RESET" also appears, press and hold the button
o
R
for more than 3 seconds and check that the normal
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. 5
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
s
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
s
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. 6
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
Preparing for extended periods of disuse
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
s
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. 7
– 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
procedure described above cannot be easily carried
out.
