External Cleaning; Operational Faults - Biasi Inovia 25S ERP User Manual And Installation Instructions

tion.
Please refer to the servicing information on
section "MAINTENANCE" on page 69.
3.5

External cleaning

Before carrying out any clean-
ing, disconnect the appliance
from the electrical mains, using
the fused spur isolation switch
fitted adjacent 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 precedes the letter E and the writing
RESET (see "LCD general features" on
page 9) appear on the LCD display, it in-
dicates that the safety lock-out has stopped
the boiler. The display background flashes
(Fig. 3.3).
Fig. 3.3
For the first lighting up and following main-
tenance 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.
USEFUL ADVICE
plugged drain pipe). It is advisable to check
the condensate drainage pipe and traps for
cleanness.
Press the reset key 14 on the boiler control
panel (Fig. 3.1) to reset its functioning.
Other operational faults signalled on the
LCD display
If the LCD display displays a code that pre-
cedes the letter E and 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 dur-
ing 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
described in the section "Refilling proce-
dure" on page 13 of this manual. Bleed
any air present in the radiators, if necessary.
The pressure has gone down
It is necessary to top up the appliance with
water again, so as to raise the pressure to
an adequate level as described in the sec-
tion "Refilling procedure" on page 13 of
this manual. If topping up with water has to
In this case and in case of per-
sistent lock-out call a compe-
tent and responsible Service
Engineer.
In order to reset good function-
ing of the boiler, call a compe-
tent and responsible Service
Engineer.
symbol, the
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