42
EN
8.5
Unscheduled maintenance
If replacing the
electronic board
, the user MUST set the parameters
as indicated in the table and in the sequence shown.
Type
No.
Description
Setting
PAR
01
Index showing boiler power in kW
2 = 40
2
PAR
02
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
2
PAR
03
Gas Type Configuration
0 = G20; 1 = LPG
0 or 1
PAR
04
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.
8.6
Malfunction codes and possible solutions
LIST OF MALFUNCTION/FAULT ALARMS
Type
No.
Fault
Solution
ALL
01
Smoke thermostat
- Contact the Technical
Assistance Centre
ALL
02
Low water pressure in
system
- Restore pressure
- Check for any leaks in
the system
ALL
03
High water pressure in
system
- Empty the system via
the drain valve on the
hydraulic assembly and
bring the pressure to
approximately 1.2 bar
ALL
04
Domestic hot water
sensor fault (return
sensor fault for T models)
- Check connections
- Check the sensor is
working
ALL
05
Delivery sensor fault
- Check connections
- Check the sensor is
working
ALL
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
ALL
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
ALL
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
ALL
09
No water circulating in the
system
- Check the rotation of the
pump rotor
- Check the electrical
connections
- Replace the pump
ALL
10
Auxiliary sensor fault
- Check PAR 02 "hydraulic
configuration"
- Check the electrical
connection
ALL
11
Gas valve modulator
disconnected
- Check the electrical
connection
ALL
12
Domestic hot water
sensor fault in tank mode
- Set the parameter
PAR 04 (Combustion
configuration) to 0
ALL
13
Smoke probe intervention
- Check the sensor is
working
- Replace the smoke
probe
ALL
14
Smoke probe fault
- Replace the smoke
probe
- Check the electrical
connection of the smoke
probe
- Contact the Technical
Assistance Centre
ALL
15
Fan check cable
disconnected
- Check the connection
cable between the fan
and the board
ALL
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
ALL
28
Maximum number of
consecutive resets
reached
- Wait 1 hour and try
unblocking the board
again
- Contact the Technical
Assistance Centre
ALL
30
Return sensor fault (boiler
sensor fault for T models)
- Replace the return probe
- Check parameters
- Contact the Technical
Assistance Centre
ALL
37
Fault due to low network
voltage
- Check the voltage
- Contact your network
provider
ALL
40
Incorrect network
frequency detected
- Contact your network
provider
ALL
41
Flame loss more than 6
consecutive times
- Check the ignition/
detection electrode
- Check the gas supply
(open valve)
- Check mains gas
pressure
ALL
42
Button fault
- Check that buttons are
working
ALL
43
Open Therm
communication fault
- Check the OT electric
connection
ALL
44
Gas valve timeout fault
without flame
- Check gas valve and
board
ALL
56
Lock for
∆T
delivery/
return over max limit
(open vent)
- Contact the Technical
Assistance Centre
ALL
57
Lock for flow temperature
(FT) check (open vent)
- Contact the Technical
Assistance Centre
ALL
62
Self-calibrating procedure
is required
- Carry out the self-
calibrating procedure
(see the specific section)
ALL
72
Incorrect positioning of
the delivery sensor
- Check delivery sensor
operation and position
ALL
74
Second delivery sensor
fault
- Check second delivery
sensor operation and
position
ALL
77
EV2 SGV current max/min
absolute limits error
- Check gas valve and
board
ALL
78
EV2 SGV current upper
limit error
- Check gas valve and
board