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8.5
Unscheduled maintenance
If replacing the electronic board , the user MUST set the parame-
ters as indicated in the table and in the sequence shown.
Type
No.
Description
Index showing boiler power
tS
0.1
in kW
0 = 24; 1 = 30
Hydraulic configuration
0 = rapid
1 = storage tank with thermo-
stat or heating only
tS
0.2
2 = hot water tank with
sensor
3 = bithermic
4=instant with solar power
input
Gas Type Configuration
tS
0.3
0 = G20; 1 = G31
Combustion configuration
0 = sealed chamber with
combustion control
tS
0.4
1 = open chamber with smoke
thermostat
2 = low NOx
To enter "Parameter setting and display"refer to the indica-
tions provided in the specific section.
Once the parameters in the table have been set, you must carry
out the "Automatic calibration procedure".
If the gas valve and/or the ignition/detection electrode and/or the
are replaced, the user must still carry out the entire phase
fan
of "Automatic calibration procedure" described in the specific
section.
8.6
Malfunction codes and possible solutions
LIST OF MALFUNCTION/FAULT ALARMS
Type
No.
Fault
AL
01
Smoke thermostat
Low water pressure
AL
02
in system
Domestic hot water
sensor fault (return
AL
04
sensor fault for T
models)
Delivery sensor
AL
05
fault
AL
06
No flame detection
Sensor or safety
AL
07
thermostat inter-
venes
Setting for
Brava
One BF
25
30
0
1
0
0 or 1
0
Solution
- Contact the Technical Assis-
tance Centre
- Restore pressure
- Check for any leaks in the
system
- Check connections
- Check the sensor is working
- Check connections
- Check the sensor is working
- Check the integrity of the
electrode and check that it is
not grounded
- Check gas availability and
pressure
- Check the integrity of the gas
valve and the card
- Check the sensor or thermo-
stat connections
- Deaerate the system
- Check the bleed valve
- Replace the sensor or the
thermostat
- Check that the pump impel-
ler is not blocked
Type
No.
Fault
Fault in the flame
AL
08
detection circuit
No water circulat-
AL
09
ing in the system
Auxiliary sensor
AL
10
fault
Gas valve modula-
AL
11
tor disconnected
Domestic hot water
AL
12
sensor fault in tank
mode
Smoke probe inter-
AL
13
vention
AL
14
Smoke probe fault
Fan check cable
AL
15
disconnected
Condensate level
AL
18
fault
Maximum number
AL
28
of consecutive
resets reached
Return sensor fault
AL
30
(boiler sensor fault
for T models)
Fault due to low
AL
37
network voltage
Incorrect network
AL
40
frequency detected
Flame loss more
AL
41
than 6 consecutive
times
AL
42
Button fault
Open Therm com-
AL
43
munication fault
No flame valve
AL
44
opening time sum
anomaly
Lock for ∆T deliv-
AL
56
ery/return over max
limit (open vent)
Solution
- Check the integrity of the
electrode and check that it is
not grounded
- Check the integrity of the gas
valve and the card
- Check the rotation of the
pump rotor
- Check the electrical connec-
tions
- Replace the pump
- Check the hydraulic configu-
ration using "tS 0.2"
- Check the electrical con-
nection
- Check the electrical con-
nection
- 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 connec-
tion of the smoke probe
- Contact the Technical Assis-
tance Centre
- Check the connection cable
between the fan and the
board
- Check for any clogging in the
pipe which takes the conden-
sate to the siphon
- Check that the siphon is not
clogged
- Wait 1 hour and try unblock-
ing the board again
- Contact the Technical Assis-
tance Centre
- Replace the return probe
- Check parameters
- Contact the Technical Assis-
tance Centre
- Check the voltage
- Contact your network
provider
- Contact your network
provider
- Check the ignition/detection
electrode
- Check the gas supply (open
valve)
- Check mains gas pressure
- Check that buttons are
working
- Check the OT electric con-
nection
- Check for the presence of
water hammer on the hot
water system and, if present,
mount a water hammer
arrestor
- Check for any abnormal
requests on the room ther-
mostat
- Contact the Technical Assis-
tance Centre
- Contact the Technical Assis-
tance Centre
83
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