77
EN
Type
No.
Fault
Solution
AL
57
Lock for flow tem-
perature (FT) check
(open vent)
- Contact the Technical Assis-
tance Centre
AL
62
Self-calibrating
procedure is re-
quired
- Carry out the self-calibrating
procedure (see the specific
section)
AL
72
Incorrect position-
ing of the delivery
sensor
- Check delivery sensor opera-
tion and position
AL
77
EV2 SGV current
max/min absolute
limits error
- Check gas valve and board
AL
78
EV2 SGV current
upper limit error
- Check gas valve and board
AL
79
EV2 SGV current
lower limit error
- Check gas valve and board
AL
80
Fault on the valve
control logic line/
valve cable dam-
aged
- Check gas valve and board
AL
81
Block due combus-
tion during start-up
- Check for blockage in
chimney
- Check air diaphragm (for BF
models)
- Check gas calibration
- Bleed the air from the gas
circuit
AL
82
Block due to nu-
merous combustion
control failures
- Check electrode
- Check outlets
- Check air diaphragm (for BF
models)
- Check gas calibration
AL
83
Irregular combus-
tion (temporary
error)
- Check for blockage in
chimney
- Check air diaphragm (for BF
models)
- Check gas calibration
AL
84
Flow rate reduced
for (presumed) low
pressure on mains
gas
- Check gas flow rate
AL
88
Internal error
(board component
protection)
- Check the board is working
- Replace board
AL
89
Unstable combus-
tion feedback signal
error
- Check electrode
- Check outlets
- Check air diaphragm (for BF
models)
- Check gas calibration
AL
90
Combustion set
cannot 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
Type
No.
Fault
Solution
AL
92
System has reached
maximum air
correction error (at
the minimum flow
rate)
- Check electrode
- Check outlets
- Check air diaphragm (for BF
models)
- Check gas calibration
AL
93
Combustion set
cannot be reached
error
- Check electrode
- Check outlets
- Check air diaphragm (for BF
models)
- Check gas calibration
AL
95
Flame signal micro
interruptions error
- Check electrode
- Check board
- Check electric power supply
- Check gas calibration
AL
96
Block due to
clogging in smoke
outlet
- Check for blockage in
chimney
- Check the smoke outlet and
electrode position (not touch-
ing the burner)
AL
98
SW error, board
start-up
- Contact the Technical Assis-
tance Centre
AL
99
General board error - Contact the Technical Assis-
tance 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 ex-
changer is clean
- Check domestic hot water
circuit valve
8.6.1
Maintenance request
When it is time to perform maintenance on the boiler,
"SE"
shows on the display.
Contact the technical assistance service to organise the neces-
sary work.
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