19
TECHNICAL MANUAL FOR INSTALLATION, USE AND MAINTENANCE
MALFUNCTIONING SIGNAL
E1
Missing water in the radiators or water pressure lower than 0.5 bar; this value can be checked on the water
meter (11); no boiler electrical component is enabled; open the tap to increase the water pressure and
automatic operation will re-start.
E2
When it flashes, the burner has blocked. Also a figure may blink: it indicates the stored primary temperature
when the block occurred; if no figure blinks, the block occurred when sanitary water was being collected; if a
figure blinks, the block occurred during the operation of the heating system; this shows whether the block
occurred as a result of over temperature or missed flame detection (cold or hot condition). Press the reset
button (2) to try and restart the boiler.
E3
When it flashes, the heating probe is disabled or damaged. Reset or replace the probe to re-start the boiler.
E4
When it flashes the sanitary probe is disabled or damaged. The sanitary mode is possible but the hot water
temperature is lower. It keeps flashing until the probe is reset or replaced. The function detecting that the
probe is not working is enabled only when hot water is collected.
E5
When it flashes, the boiler is not working because of bad draught. In the ( PRGHO, the flashing stops after
10 minutes and the burners starts working again; after a few minutes it stops again if the problem has not
been solved. In ()(5 models, the flashing continues until the problem is solved.
The temperature values flash when the Pacc and Pmax values are being changed (call the technician) or if
the chimney sweep function is enabled.
(3) AND “+” of the sanitary (8); the message “of” will
appear on the display. In order to re-activate the function,
simply repeat the same operation and the message “on”
will appear.
The anti-freezing function does not grant a total
protection from freezing due to the fact that this is
subordinated to the correct functioning of the boiler. This
is not granted, for instance, when the electric or gas
supply is interrupted, when the flue gas exhaust pipes
are obstructed or when a failure of an internal
component occurs. Therefore the custom is that some
anti-freezing liquid is added to the equipment, as
suggested in the section “INSTALLATION” of the manual.
4
.6 MAINTENANCE.
NOTE !
Only skilled technicians can carry out activities
inside the boiler
Should a malfunctioning occur, shut down the device, call
the Service Centre and do not carry out any maintenance
operation: the hot surfaces inside the boiler may cause
BURNS and the energised components may cause SHOCKS
or SHORT CIRCUITS!
Call the authorised Service Centre for yearly compulsory
maintenance.
Before cleaning the shell, de-energise the electrical system
and use a wet cloth and soft detergent to remove the dust
and build-ups.
Keep the area where the boiler is installed always clean;
do not cover air intakes which allow combustion and/or
cooling air to enter the system.
NOTE !
Make sure that unauthorised people, children,
animals or anything else which may damage or be
damaged by the boiler, cannot easily access the boiler.
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