External Cleaning; Operational Faults - Biasi Advance Plus 25C ERP User Manual And Installation Instructions

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 alternates between the letter Er and the
writing RESET (see "LCD general features"
to 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).
RESET
RESET
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 op-
eration 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 pan-
el 14 (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
Another possible signal occurs when the
d.h.w. exchanger cannot exchange all of the
power supplied by the boiler.
E.g.: d.h.w. exchanger clogged with lime
scale. This happens only when the boiler has
a request for d.h.w..
Code 01 appears on the LCD display that al-
ternates with the letter Li. The display back-
ground flashes (Fig. 3.5).
In this case and in case of persis-
tent lock-out call a competent
and responsible Service Engi-
neer.
sym-
- 19 -