Technical data

7 181 465 346 GB (03.02)
36
Failure identification procedure
19. Check if the 20-pin connector lead
assembly is damaged.
B Power OFF the appliance.
B Disconnect the boiler electrical connection.
B Change the 20-pin connector lead assembly.
B Turn ON the appliance.
B Reconnect the boiler electrical connection.
B Press , restart the appliance.
EA?
B Power OFF the appliance.
↓20.
20. The PCB control board is damaged. B Make a note of the altered service settings (see
table 1, "First Service Level; Values that can be
modified" at page 8 and table 5, "Secondary
Service Level; Values that can be modified" at
page 11).
B Power OFF the appliance.
B Disconnect the boiler electrical connection.
B Change PCB control board.
B Reconnect the boiler electrical connection.
B Turn ON the appliance.
B Restore service settings previously noted down.
To return to normal function mode:
B Press buttons and simultaneously.
B Regulate the temperature control and the
temperature control on the previously set
positions.
1) See installation instructions
EA and flashing.
No flame ionisations signal
Check Action