External Cleaning; Operational Faults - Biasi BASICA COND User Manual And Installation Instructions

• domestic hot water heat exchanger;
• condensing heat exchanger;
• burner;
• exhaust fume duct and flue;
• pressurisation of the expansion tank;
• filling up of the central heating circuit;
• bleeding of air from the central heating
system;
• general check of the appliance's opera-
tion.
Please refer to the servicing information on
section "MAINTENANCE" on page 74.
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 is not working and an error code
flashes on the display and the
shown, it is a volatile lockout. The boiler is
reactivated automatically once the fault has
been resolved (see "LCD general features"
on page 10); the boiler is in lockout mode.
The display background flashes (Fig. 3.3).
Fig. 3.3
- 18 -
USEFUL ADVICE
symbol is
RESET
bar
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 operational faults signalled on the
LCD display
If an error code, the
symbol are shown on the LCD dis-
play, the lockout is NOT volatile (Fig. 3.4).
Fig. 3.4
To restore operation, press the reset button
18 (Fig. 3.1) on the boiler control panel.
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 12 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 12 of
this manual. If topping up with water has to
be done very frequently, have the system
checked for leaks.
symbol and the
RESET
bar