Biasi RIVA COMBI Service Manual page 40

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Third Part
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detection cable E and ignition cable F (Figure
2).
3) Remove the connector G (Figure 3).
4 Ignition and Control Sequence
NO
RIVA COMBI SERVICE MANUAL – REV A
(edition-0106)
H
G
H
Figure 3
Supply from the electronic control circuit
Ignition time
finished?
Full Sequence Ignition Device S4567A-1019
4) Pull the ignition device out, pulling it frontally
(follow the arrows on Figure 2).
5) With the help of a screwdriver open the four
clamps H (two on top and two on bottom of
the device) (Figure 3).
6) Re-assemble the device following the removal
procedures in the reverse order.
Shutdown
YES memorised?
Wait time starts
Presence
NO
of flame?
Waiting time
NO
finished?
Starts ignition sparks
Opens gas valve
Ignition time starts
Presence
NO
of flame?
Closes gas valve
Stops ignition sparks
YES
Memorizes shutdown
Shutdown indicator light on
Reset push button
NO
pressed?
YES
Presence of flame?
NO
Resets shutdown
YES
YES
YES
Stops ignition sparks
Gas valve open
YES
NO
8-2