External Cleaning; Operational Faults - Biasi ADVANCE 25S User Manual

3.5

External cleaning

Before carrying out any cleaning,
disconnect the appliance from the
electrical mains, using the fused
spur isolation switch fitted adja-
cent to the appliance.
To clean the external panels, use a cloth
soaked in soapy water. Do not use solvents,
abrasive powders or sponges.
Do not carry out cleaning of the appliance
and/or its parts with readily flammable sub-
stances (for example petrol, alcohols, naph-
tha, etc.).
3.6

Operational faults

If the boiler does not function and a code that
alternates between the letter Er and the writ-
ing RESET (see "LCD general features" on
page 9) appear on the LCD display, it indi-
cates that the safety lock-out has stopped the
boiler. The display background flashes (Fig.
3.3).
RESET
RESET
Fig. 3.3
For the first lighting up and following mainte-
nance procedures for the gas supply, it may
be necessary to repeat the resetting operation
several times so as to remove the air present
in the pipe work.
Safety lock-out may occur even in case of a
blockage of the condensate drainage (e.g.
plugged drain pipe). It is advisable to check
USEFUL ADVICE
the condensate drainage pipe and traps for
cleanness.
Press the reset key on the boiler control panel
12 (Fig. 3.1) to reset its functioning.
Other operational faults signalled on the
LCD display
If the LCD display displays a code that alter-
nates between the letter Er and the
bol, the boiler has an anomaly that cannot be
reset.
The display background flashes (Fig. 3.4).
Fig. 3.4
Noise due to air bubbles are heard during
operation
You should check that the pressure on the
pressure gauge is not below the correct set-
ting.
If required, top up the system correctly, as de-
scribed in the section "Refilling procedure" on
page 12 of this manual. Bleed any air pre-
sent in the radiators, if necessary.
The pressure has gone down
It is necessary to top up the appliance with wa-
In this case and in case of persis-
tent lock-out call a competent and
responsible Service Engineer.
In order to reset good functioning
of the boiler, call a competent and
responsible Service Engineer.
sym-
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