Checks; Removal Of The Electronic Control P.c.b - Biasi Activ A 12OV Service Manual

PARAMETER DIGIT VALUES
Pr 09
Chimney sweep
function
C.h. reignition fre- Pr 10
quency
C.h. pump post ---cir- Pr 11
culation
Pr 12
Max. useful output in
c.h. mode
C.h. pump working Pr 13
type
Ignition power Pr 14
Pr 15
K value (external
probe diagram)
Pr 16
Not used
D.h.w. burner turn off Pr 17
function
NTC on the c.h. re- Pr 18
turn
00 = No chimney
sweep fun (factory
set)
01 = Low power
sweep---test
04 = C.h. power
sweep---test
07 = D.h.w. power
sweep---test
00 ÷ 99 (0÷600 sec.)
(factory set 30 = 3
minutes)
00 ÷ 99 (0÷600 sec.)
(factory set 10 = 1
minute)
00 ÷ 99 (0÷100%)
factory set:
99 = Activ A 12OV
99 = Activ A 15OV
99 = Activ A 20OV
99 = Activ A 25OV
00 = Depends on
room thermostat
(factory set)
04 = Always running
00 ÷ 99 (0÷100%)
factory set:
Natural gas (G20)
30 = Activ A 12OV
30 = Activ A 15OV
30 = Activ A 20OV
40 = Activ A 25OV
Propane (G31)
40 = Activ A 12OV
40 = Activ A 15OV
40 = Activ A 20OV
40 = Activ A 25OV
01 (=0,1)÷60 (=6,0)
K value
factory set:
00 = Off
00 = Burner off at
fixed d.h.w. = 65 ˚C
(factory set)
01 = Brurner off at
set point +5 ˚C
00 = Probe not pres-
ent
(factory set)
01 = Probe present
Main electronic control/ignition p.c.b.
PARAMETER
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
C.h. minimum set-
point
Tab. 6.1
6.5

Checks

Check that the fuses are complete
n
If the Main electronic control/ignition p.c.b. does not
supply any device (pump, fan, etc.) check that the
fuses 10 (Fig. 6.2) are complete.
If a fuse has blown replace it with one that has the same
characteristics after having identified the reason for fail-
ure.
Lock sequence
n
Start the boiler until the burner is ignited.
With the burner firing, interrupt the gas supply. The
Main electronic control/ignition p.c.b. must carry out
four complete ignition cycles and then, after about 4
minutes, goes to lock ---out state.
Switch off and on the electricity supply to the boiler, by
means of the fused spur isolation switch, the device
must not unlock and the burner must not turn on
6.6

Removal of the electronic control p.c.b

Warning: isolate the boiler from the mains
electricity supply before removing any
covering or component.
When replacing the Main electronic control/ignition
p.c.b. all parameters must be correctly checked /
adjusted accordingly with the values noted in table
in the installation manual see chapter COMMIS-
SIONING section: Setting record (for information on
parameters see also section 6.4).
1 Remove all the body panels (see section 2.2).
2 Gain access to the parts located inside
electronic p.c.b. box
2.4 of this manual.
3 Remove all the wiring connected to the Main elec-
tronic control/ignition p.c.b..
DIGIT VALUES
Pr 19
Pr 20
Pr 21
Pr 22
Pr 23
Pr 24
Pr 25
Pr 26
Pr 27 25 ÷ 45 (factory set
25 ˚C)
the Main
as explained in the section
15