98
EN
4.5
Unscheduled maintenance
If replacing the
electronic board
, the user MUST set the
parameters as indicated in the table and in the sequence shown.
m
CAUTION
The Technical Assistance Centre must set tS 6.5 to
53%.
Type
No.
Description
Setting for
Brava One
25 BF
tS
0.1
Index showing boiler power in kW
4 = 25 (aluminium)
4
tS
0.2
Hydraulic configuration
0 = rapid
1 = storage tank with thermostat or
heating only
2 = hot water tank with sensor
3 = bithermic
4=instant with solar power input
0
tS
0.3
Gas Type Configuration
0 = G20; 1 = G31
0 or 1
tS
0.4
Combustion configuration
0 = sealed chamber with combustion
control
1 = open chamber with smoke
thermostat
2 = low NOx
0
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
fan
are replaced, the user must still carry out the entire phase
of "Automatic calibration procedure" described in the specific
section.
4.6
Malfunction codes and possible solutions
LIST OF MALFUNCTION/FAULT ALARMS
Type No. Fault
Solution
AL
01 Smoke thermostat
- Contact the Technical
Assistance Centre
AL
02 Low water pressure in
system
- Restore pressure
- Check for any leaks in the
system
AL
04
Domestic hot water
sensor fault (return
sensor fault for T
models)
- Check connections
- Check the sensor is
working
AL
05 Delivery sensor fault
- Check connections
- Check the sensor is
working
AL
06 No flame detection
- 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
AL
07 Sensor or safety
thermostat intervenes
- Check the sensor or
thermostat connections
- Deaerate the system
- Check the bleed valve
- Replace the sensor or the
thermostat
- Check that the pump
impeller is not blocked
AL
08 Fault in the flame
detection circuit
- 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
Solution
AL
09 No water circulating in
the system
- Check the rotation of the
pump rotor
- Check the electrical
connections
- Replace the pump
AL
10 Auxiliary sensor fault
- Check the hydraulic
configuration using "tS 0.2"
- Check the electrical
connection
AL
11 Gas valve modulator
disconnected
- Check the electrical
connection
AL
12
Domestic hot water
sensor fault in tank
mode
- Set the parameter tS 0.4
(Combustion configuration)
to 0
AL
13 Smoke probe
intervention
- Check the sensor is
working
- Replace the smoke probe
AL
14 Smoke probe fault
- Replace the smoke probe
- Check the electrical
connection of the smoke
probe
- Contact the Technical
Assistance Centre
AL
15 Fan check cable
disconnected
- Check the connection cable
between the fan and the
board
AL
18 Condensate level fault
- Check for any clogging in
the pipe which takes the
condensate to the siphon
- Check that the siphon is not
clogged
AL
28
Maximum number of
consecutive resets
reached
- Wait 1 hour and try
unblocking the board again
- Contact the Technical
Assistance Centre
AL
30
Return sensor fault
(boiler sensor fault for
T models)
- Replace the return probe
- Check parameters
- Contact the Technical
Assistance Centre
AL
37 Fault due to low
network voltage
- Check the voltage
- Contact your network
provider
AL
40 Incorrect network
frequency detected
- Contact your network
provider
AL
41 Flame loss more than 6
consecutive times
- Check the ignition/detection
electrode
- Check the gas supply (open
valve)
- Check mains gas pressure
AL
42 Button fault
- Check that buttons are
working
AL
43 Open Therm
communication fault
- Check the OT electric
connection
AL
44 No flame valve opening
time sum anomaly
- 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
AL
56
Lock for
∆T
delivery/
return over max limit
(open vent)
- Contact the Technical
Assistance Centre
AL
57
Lock for flow
temperature (FT) check
(open vent)
- Contact the Technical
Assistance Centre
AL
62 Self-calibrating
procedure is required
- Carry out the self-
calibrating procedure (see
the specific section)
AL
72 Incorrect positioning of
the delivery sensor
- Check delivery sensor
operation and position
AL
74 Second delivery sensor
fault
- Check second delivery
sensor operation and
position
Содержание Brava One 25 BF
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