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Figure 3.4
If the boiler is turned off, have a qualified
technician empty the boiler (heating and
DHW circuit) and empty the heating system
and the DHW system.
3.4 Periodic maintenance
For efficient and regular boiler operation, it
is recommended that the boiler be serviced
and cleaned at least once a year by a tech-
nician from an authorised service centre.
During this check, the most important boil-
er components are inspected and cleaned.
This check may be performed within the
scope of a maintenance contract.
3.5 External cleaning
Before performing any cleaning
operation, disconnect the boiler
from the electric mains supply.
To clean, use a cloth soaked in soap and
water.
Do not use: Solvents, flammable substanc-
es or abrasive substances.
3.6 Operating anomalies
If the boiler is not working and an error code
flashes on the display and the
is shown, it is a volatile lockout. The boiler
is reactivated automatically once the fault
has been resolved (see "General LCD char-
acteristics" on page 7); the boiler is in
lockout mode (Figure 3.5).
- 14 -
USEFUL TIPS
RESET
bar
symbol
Figure 3.5
Each fault is classified accord-
ing to the level of priority. If
more than one faults are detect-
ed at the same time, the most
urgent error code is shown.
Frequent safety lockouts should
be reported to an authorised
service centre.
Other possible anomalies shown on the
LCD display
If an error code, the
symbol are shown on the LCD dis-
play, the lockout is NOT volatile (Figure 3.6).
Figure 3.6
To restore operation, press the reset button
18 (Figure 3.3) on the boiler control panel.
Air bubble noises
Check the pressure of the heating circuit
and fill it if necessary, see section "Filling
the heating circuit" on page 13.
Low system pressure
Add more water to the heating system.
To do this, refer to section "Filling the heat-
ing circuit" on page 13.
RESET
bar
symbol and the
RESET
bar
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