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
PAR
01
in kW
0 = 24; 1 = 30; 2 = 40
Hydraulic configuration
0 = rapid
1 = storage tank with ther-
mostat or heating only
PAR
02
2 = hot water tank with
sensor
3 = bithermic
4=instant with solar power
input
Gas Type Configuration
PAR
03
0 = G20; 1 = LPG
Combustion configuration
0 = sealed chamber with
combustion control
PAR
04
1 = open chamber with
smoke thermostat
2 = Low NOx
To enter "Parameter setting and display"refer to the indications
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
ALL
01
Smoke thermostat
Low water pressure
ALL
02
in system
High water pressure
ALL
03
in system
Domestic hot water
sensor fault (return
ALL
04
sensor fault for T
models)
ALL
05
Delivery sensor fault
ALL
06
No flame detection
Sensor or safety
ALL
07
thermostat inter-
venes
Fault in the flame
ALL
08
detection circuit
84
Setting for
Brava Slim
BF
25
30
40
0
1
2
0
0 or 1
0
Solution
- Contact the Technical Assis-
tance Centre
- Restore pressure
- Check for any leaks in the
system
- Empty the system via the
drain valve on the hydraulic
assembly and bring the pres-
sure to approximately 1.2 bar
- 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 impeller
is not blocked
- Check the integrity of the
electrode and check that it is
not grounded
- Check the integrity of the gas
valve and the card
Type
No.
Fault
No water circulating in
ALL
09
the system
ALL
10
Auxiliary sensor fault
Gas valve modulator
ALL
11
disconnected
Domestic hot water
ALL
12
sensor fault in tank
mode
Smoke probe inter-
ALL
13
vention
ALL
14
Smoke probe fault
Fan check cable dis-
ALL
15
connected
ALL
18
Condensate level fault
Maximum number of
ALL
28
consecutive resets
reached
Return sensor fault
ALL
30
(boiler sensor fault for
T models)
Fault due to low net-
ALL
37
work voltage
Incorrect network
ALL
40
frequency detected
Flame loss more than
ALL
41
6 consecutive times
ALL
42
Button fault
Open Therm communi-
ALL
43
cation fault
No flame valve opening
ALL
44
time sum anomaly
Lock for ∆T delivery/
ALL
56
return over max limit
(open vent)
Lock for flow temper-
ALL
57
ature (FT) check (open
vent)
Self-calibrating proce-
ALL
62
dure is required
Incorrect positioning of
ALL
72
the delivery sensor
Second delivery sensor
ALL
74
fault
EV2 SGV current max/
ALL
77
min absolute limits
error
EV2 SGV current upper
ALL
78
limit error
EN
Solution
- Check the rotation of the
pump rotor
- Check the electrical con-
nections
- Replace the pump
- Check PAR 02 "hydraulic
configuration"
- Check the electrical con-
nection
- Check the electrical con-
nection
- Set the parameter PAR 04
(Combustion configuration)
to 0
- Check the sensor is
working
- Replace the smoke probe
- Replace the smoke probe
- Check the electrical con-
nection 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
- Wait 1 hour and try un-
blocking the board again
- 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 ignition/detec-
tion electrode
- Check the gas supply
(open valve)
- Check mains gas pressure
- Check that buttons are
working
- Check the OT electric
connection
- 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
thermostat
- Contact the Technical
Assistance Centre
- Contact the Technical
Assistance Centre
- Contact the Technical
Assistance Centre
- Carry out the self-cali-
brating procedure (see the
specific section)
- Check delivery sensor
operation and position
- Check second delivery
sensor operation and
position
- Check gas valve and board
- Check gas valve and board