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Figure 9 .19
21 By using buttons "D" or "E" (Figure 9.5) it is possible to modify
the value of parameter A21 (Figure 9.20).
00 = Room thermostat
01 = Remote control
Figure 9 .20
22 Press "A" (Figure 9.5) to confirm the value entered and return
to the list of parameters (Figure 9.19).
23 Press "A" and hold until the LCD display shows the code
A38, indicating entry into "parameter A38" (Figure 9.21).
Figure 9 .21
24 By using buttons "D" or "E" (Figure 9.5) it is possible to modify
the value of parameter A38 (Figure 9.22).
60 = Default
10 = Correct
Figure 9 .22
25 Press "A" or "B" (Figure 9.5) to confirm the value entered and
return to the list of parameters (Figure 9.21).
26 Press "F" (Figure 9.5) to exit "programming mode".
Important: at the end of the setting operation it is important
to fill/update the table in the installation manual see chapter
COMMISSIONING section: Setting record .
9 .5 Checks
Check that the fuses are complete
If the Main electronic control/ignition p.c.b. does not supply any
device (pump, fan, etc.) check that the fuses 16 (Figure 9.2) are
complete.
If a fuse has blown replace it with one that has the same charac-
teristics after having identified the reason for failure.
Lock sequence
- 24 -
MAIN ELECTRONIC CONTROL/IGNITION P.C.B.
RESET
bar
RESET
bar
RESET
bar
RESET
bar
Start the boiler until the burner is ignited.
With the burner firing, interrupt the gas supply. The Main elec-
tronic 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.
9 .6 Removal of the electronic control p .c .b
Warning: isolate the boiler from the mains electrici-
ty supply before removing any covering or compo-
nent .
When replacing the Main electronic control/ignition p .c .b .
all parameters must be correctly checked / adjusted accord-
ingly with the values noted in table in the installation manual
see chapter COMMISSIONING section: Setting record (for
information on parameters see also section "9 .4 Setting the
boiler control function modes" on page 22) .
1 Remove all the body panels (see section "2.2 Case panels"
on page 5).
2 Gain access to the parts located inside the Main electronic
p.c.b. box as explained in the section "2.4 Main electronic
p.c.b. box" on page 6 of this manual.
3 Unscrew the screws "1" (Figure 9.23).
4 Remove all the wiring connected to the Main electronic con-
trol/ignition p.c.b.
5 Remove the Main electronic control/ignition p.c.b.
Figure 9 .23
6 Re-assemble the Main electronic control/ignition p.c.b. fol-
lowing the removal procedures in the reverse order.
Important
When re-assembling the Main electronic control/ignition p.c.b.:
7 It is not necessary to utilise static protections but it is advis-
able to ensure that the p.c.b. is handled with care and held at
the edges and with clean dry hands.
Attention
After installing the Main electronic control/ignition p.c.b. properly
set the parameters.
1
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