Type
No.
Fault
Gas valve modulator
ALL
11
disconnected
Incorrect configuration
ALL
12
of the open /sealed
chamber
Smoke probe
ALL
13
intervention
ALL
14
Smoke probe fault
Fan check cable
ALL
15
disconnected
ALL
18
Condensate level fault
Maximum number of
ALL
28
consecutive releases
Return sensor (SR)
ALL
30
fault
Fault due to low
ALL
37
network voltage
Incorrect network
ALL
40
frequency detected
Flame loss more than 6
ALL
41
consecutive times
ALL
42
Button fault
Open Therm
ALL
43
communication fault
No flame valve opening
ALL
44
time sum anomaly
Self-calibrating
ALL
62
procedure is required
HP high pressure time
ALL
70
max. interventions
Incorrect positioning of
ALL
72
the delivery sensor
EV current max/min
ALL
77
absolute limits error
EV current upper limit
ALL
78
error
EV current lower limit
ALL
79
error
Fault on the valve
ALL
80
control logic line
Block due combustion
ALL
81
during start-up
Block due to numerous
ALL
82
combustion control
failures
Solution
- Check the electrical
connection
- Set the parameter tS 0.4
(Combustion configuration)
to 0
- Check the sensor is
working
- Replace the smoke probe
- Replace the smoke probe
- Check the electrical
connection of the smoke
probe
- Contact the Technical
Assistance Centre
- Check the connection cable
between the fan and the
board
- Check for any clogging in
the pipe which takes the
condensate to the siphon
- Check that the siphon is
not clogged
- Contact the Technical
Assistance Centre
- Replace the return probe
- Check parameters
- Contact the Technical
Assistance Centre
- Check the voltage
- Contact your network
provider
- Contact your network
provider
- Check the detection
electrode
- Check the gas supply (open
valve)
- Check mains gas pressure
- Check that buttons are
working
- Check the electrical
connection of the remote
control
- Replace the board
- Carry out the self-
calibrating procedure (see
the specific section)
- Decrease setting PAR 46
- Contact the Technical
Assistance Centre
- Check that the delivery
sensor is attached to the
delivery pipe
- Check gas valve and board
- Check gas valve and board
- Check gas valve and board
- Check/replace the
connection cable to the gas
valve
- Check for blockage in
chimney or recirculation
- Bleed the air from the gas
circuit
- Check for any dirt on the
air evaporator
- Check electrode
- Check outlets
- Check air diaphragm
- Check gas calibration
- Check for any dirt on the
air evaporator
Type
No.
Fault
Irregular combustion
ALL
83
(temporary error)
Flow rate reduced
ALL
84
for (presumed) low
pressure on mains gas
Internal error (board
ALL
88
component protection)
Unstable combustion
ALL
89
feedback signal error
Combustion set cannot
ALL
90
be reached error
System has reached
maximum air
ALL
92
correction error (at the
minimum flow rate)
Combustion set cannot
ALL
93
be reached error
Flame signal micro
ALL
95
interruptions error
Block due to clogging
ALL
96
in smoke outlet
SW error, board start-
ALL
98
up
ALL
99
General board error
Frequent relief valve
ALL
-
intervention
Limited production of
ALL
-
domestic hot water
8.7.1
Maintenance request
When it is time to perform maintenance on the boiler, the
symbol shows on the display.
Contact the technical assistance service to organise the
necessary work.
Solution
- Check for blockage in
chimney
- Check for any dirt on the
air evaporator
- Check gas flow rate
- Replace the board
- Check electrode
- Check outlets
- Check air diaphragm
- Check gas calibration
- Check electrode
- Check outlets
- Check air diaphragm
- Check gas calibration
- Check electrode
- Check outlets
- Check air diaphragm
- Check gas calibration
- Check electrode
- Check outlets
- Check air diaphragm
- Check gas calibration
- Check electrode
- Check board
- Check electric power
supply
- Check gas calibration
- Check for blockage in
chimney
- Contact the Technical
Assistance Centre
- Contact the Technical
Assistance Centre
- Check circuit pressure
- Check expansion vessel
- Check the diverter valve
- Check that plate heat
exchanger is clean
- Check domestic hot water
circuit valve
c
47
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