EN
4.5
Unscheduled maintenance
If replacing the electronic board , the user MUST set the
parameters as indicated in the table.
Type
No.
Description
Index showing boiler power in kW
0 = 25T
PAR
01
1 = 25/55
3 = 30/55
Hydraulic configuration
0 = rapid
1 = storage tank with thermostat or
heating only
PAR
02
2 = hot water tank with sensor
3 = bithermic
4=instant with solar power input
5 = open vent
6 = boiler with heat pump
Gas Type Configuration
PAR
03
0 = G20; 1 = G31
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 entire phase of "Self-calibrating procedure" described
in the specific section.
If the gas valve and/or the ignition/detection electrode , and/or the
, and/or the fan are replaced, the user must still carry out
burner
the entire phase of "Self-calibrating procedure" described in
the specific section.
4.6
Possible faults and solutions
LIST OF MALFUNCTION/FAULT ALARMS
Type
No.
Fault
Low water pressure
ALL
02
in system
High water
ALL
03
pressure in system
Domestic hot water
ALL
04
sensor fault
Delivery sensor
ALL
05
fault
ALL
06
No flame detection
Sensor or safety
ALL
07
thermostat
intervenes
Fault in the flame
ALL
08
detection circuit
No water
ALL
09
circulating in the
system
Setting
1 or 3
2
0 or 1
Solution
- Restore pressure
- Check for any leaks in the
system
- Empty the system via the
drain valve on the hydraulic
assembly and bring the
pressure to approximately
1.2 bar
- Check connections
- Replace the sensor
- Check connections
- Replace the sensor
- 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
thermostat 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 gas availability and
pressure
- Check the integrity of the gas
valve and the card
- Check the rotation of the
pump rotor
- Check the electrical
connections
- Replace the pump
Type
No.
Fault
Auxiliary sensor
ALL
10
fault
Gas valve modulator
ALL
11
disconnected
Incorrect
configuration of
ALL
12
the open /sealed
chamber
Smoke probe
ALL
13
intervention
ALL
14
Smoke probe fault
Fan check cable
ALL
15
disconnected
Condensate level
ALL
18
fault
Maximum number
ALL
28
of consecutive
resets reached
Return sensor (SR)
ALL
30
fault
Fault due to low
ALL
37
network voltage.
Incorrect network
ALL
40
frequency detected
Flame loss more
ALL
41
than 6 consecutive
times
ALL
42
Button fault
Open Therm
ALL
43
communication
fault
Self-calibrating
ALL
62
procedure is
required
Incorrect
ALL
72
positioning of the
delivery sensor
EV2 SGV current
ALL
77
max/min absolute
limits error
EV2 SGV current
ALL
78
upper limit error
EV2 SGV current
ALL
79
lower limit error
Fault on the valve
control logic
ALL
80
line/valve cable
damaged
Block due to
ALL
81
combustion during
start-up
Block due to
numerous
ALL
82
combustion control
failures
Solution
- Check PAR 02 "hydraulic
configuration"
- Check the electrical
connection
- Check the electrical
connection
- Set the parameter PAR 04
(Combustion configuration)
to 0
- Replace the smoke probe
- Contact the Technical
Assistance Centre
- Replace the smoke probe
- Check the electrical
connection of the smoke
probe, if the problem is
not resolved, contact the
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
- Contact the Technical
Assistance Centre
- Check with tester
- Contact network provider
(ENEL)
- Contact network provider
(ENEL)
- 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
- Carry out the self-calibrating
procedure (see the specific
section)
- Check that the delivery
sensor is attached to the
delivery pipe
- Contact the Technical
Assistance Centre
- Contact the Technical
Assistance Centre
- Contact the Technical
Assistance Centre
- Check the valve cable
- Contact the Technical
Assistance Centre
- Check for blockage in
chimney
- Bleed the air from the gas
circuit
- Check electrode
- Check outlets
95