95
EN
4.5
Unscheduled maintenance
If replacing the
electronic board
, the user MUST set the
parameters as indicated in the table.
Type
No.
Description
Setting
25/55
30/55
PAR
01
Index showing boiler power
in kW
0 = 25T; 1 = 25/55; 3 = 30/55
1
3
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
5 = open vent
6 = boiler with heat pump
2
PAR
03
Gas Type Configuration
0 = G20; 1 = G31; 2 = G230
0 or 1 or 2
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
burner
, and/or the
fan
are replaced, the user must still carry out
the entire phase of "Self-calibrating procedure" described in
the specific section.
4.6
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
ALL
79
EV2 SGV current lower
limit error
- Check gas valve and board
ALL
80
Fault on the valve
control logic line/valve
cable damaged
- Check gas valve and board
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