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34
EN
Type
No.
Fault
Solution
ALL
80
Fault on the valve
control logic line/valve
cable damaged
- Check gas valve and board
ALL
81
Block due combustion
during start-up
- Check for blockage in
chimney
- Check air diaphragm (for
BF models)
- Check gas calibration
- Bleed the air from the gas
circuit
ALL
82
Block due to nu-
merous combustion
control failures
- Check electrode
- Check outlets
- Check air diaphragm (for
BF models)
- Check gas calibration
ALL
83
Irregular combustion
(temporary error)
- Check for blockage in
chimney
- Check air diaphragm (for
BF models)
- Check gas calibration
ALL
84
Flow rate reduced for
(presumed) low pres-
sure on mains gas
- Check gas flow rate
ALL
88
Internal error (board
component protection)
- Check the board is
working
- Replace board
ALL
89
Unstable combustion
feedback signal error
- Check electrode
- Check outlets
- Check air diaphragm (for
BF models)
- Check gas calibration
ALL
90
Combustion set can-
not be reached error
- Check electrode
- Check outlets
- Check air diaphragm (for
BF models)
- Check gas calibration
ALL
91
Gas valve out of range - Recalibrate the gas valve
ALL
92
System has reached
maximum air cor-
rection error (at the
minimum flow rate)
- Check electrode
- Check outlets
- Check air diaphragm (for
BF models)
- Check gas calibration
Type
No.
Fault
Solution
ALL
93
Combustion set can-
not be reached error
- Check electrode
- Check outlets
- Check air diaphragm (for
BF models)
- Check gas calibration
ALL
95
Flame signal micro
interruptions error
- Check electrode
- Check board
- Check electric power
supply
- Check gas calibration
ALL
96
Block due to clogging
in smoke outlet
- Check for blockage in
chimney
- Check the smoke outlet
and electrode position (not
touching the burner)
ALL
98
SW error, board
start-up
- Contact the Technical
Assistance Centre
ALL
99
General board error
- Contact the Technical
Assistance Centre
-
-
Frequent relief valve
intervention
- Check circuit pressure
- Check expansion vessel
-
-
Limited production of
domestic hot water
- Check the diverter valve
- Check that plate heat
exchanger is clean
- Check domestic hot water
circuit valve
4.6.1
Maintenance request
When it is time to perform maintenance on the boiler, the
c
symbol shows on the display.
Contact the technical assistance service to organise the neces-
sary work.