Biasi RINNOVA ADAPTIVE M300V.2025 SM Service Manual page 25

Combi boiler
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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 "D" (Figure 9.11).
4 Delicately flex the hooks "E" in the directions indicated (Fig-
ure 9.11) in order to release the circuit from the box.
5 Remove all the wiring connected to the Main electronic con-
trol/ignition p.c.b.
6 Remove the Main electronic control/ignition p.c.b.
Figure 9 .11
7 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.:
8 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.
Warning: After cleaning or replacement as detailed
above, it is deemed necessary to undertake a com-
bustion analysis as detailed in section "11 .3 Adjust-
ment - Chimney Sweep Function" on page 31 .
MAIN ELECTRONIC CONTROL/IGNITION P.C.B.
E
D
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