Control Panel Electronic P.c.b; Function; Info Modality; Function Modes Setting Modality - Biasi Activ A 25C Service Manual

10

Control panel electronic p.c.b.

10.1

Function

F
E
D
Fig. 10.1
A) C.h. temperature increase key
B) C.h. temperature reduce key
C) Reset/Stand---by/Winter/Summer key
D) D.h.w. temperature reduce key
E) D.h.w. temperature increase key
F) Display
The Control panel electronic p.c.b. can give to the ser-
vice 3 levels of informations:
Normally information (see the installation manual
f
chapter APPLIANCE DESCRIPTION section LCD
general features.

Info modality

f

Function modes setting modality

f
10.2
Info modality
The INFO mode allows the display of some information
on the boiler functioning status. In case of malfunction-
ing of the boiler, it may be useful to communicate such
information to the Authorised Service Centre Engineer
so that the causes can be understood.
In order to access the INFO mode, press keys A and C
(Fig. 10.1) at the same time until the letter di appears
on the display that alternates with a code (Fig. 10.2).
Fig. 10.2
To scroll the values press B (reduce) and A (increase).
keys (Fig. 10.1). In order to exit the INFO mode, hold
keys A and C (Fig. 10.1) pressed at the same time.
The following table gives details of each parameter and
the possible value that can be show.
A
Description
External temperature ˚C
B
(if fitted)
K value (external probe dia-
C gram) (the value is x 10)
Offset (Transaltion of K diagram
± 15˚C)
C.h. temperature ˚C (calcu-
lated by external sensor)
C.h. flow temperature ˚C
C.h. return temperature ˚C (if
fitted)
D.h.w. temperature ˚C
Flue temperature ˚C
Fan speedy (the value has to
be x 100 = 4400 rpm)
SW version BC (burner control) dc
SW version MB (main board)
Tab. 10.1
10.3
Function modes setting
It is possible to select the various boiler control function
modes hereafter named "parameters" by using the
keys of the control panel p.c.b.
During the function modes setting, the boiler does not
operate.
To get in function modes setting modality see section
9.4
10.4 Removal of the control panel electronic
p.c.b
Warning: isolate the boiler from the mains
electricity supply before removing any
covering or component.
1 Remove all the body panels (see section 2.2).
2 Gain access to the parts located inside
trol panel electronic p.c.b.
section 2.3 of this manual.
Remove all the wiring A connected to the Control
3
panel electronic p.c.b. (Fig. 10.3).
Parameter Value
d1 -- 5
d2 12
d3 -- 10
d4 66
d5 78
d6 44
d7 40
d8 67
d9 44
01
dd 03
modality
the Con-
as explained in the
25