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.
Type
No.
Description
Index showing boiler power
PAR
01
in kW
0 = 25T; 1 = 25/55; 3 = 30/55
Hydraulic configuration
0 = rapid
1 = storage tank with
thermostat or heating only
2 = hot water tank with
PAR
02
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; 2 = G230
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 "Automatic 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
burner
out the entire phase of "Automatic self-calibrating procedure"
described in the specific section.
4.6
Malfunction codes and possible solutions
LIST OF MALFUNCTION/FAULT ALARMS
Type
No.
Fault
ALL
01
Smoke thermostat
Low water pressure in
ALL
02
system
High water pressure in
ALL
03
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 intervenes
96
Setting
25/55
30/55
1
3
2
0 or 1 or 2
Solution
- Contact the Technical
Assistance Centre
- 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
- 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
thermostat connections
- Deaerate the system
- Check the bleed valve
- Replace the sensor or the
thermostat
- Check that the pump
impeller is not blocked
Type
No.
Fault
Fault in the flame
ALL
08
detection circuit
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
ALL
13
intervention
ALL
14
Smoke probe fault
Fan check cable
ALL
15
disconnected
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
ALL
37
network voltage
Incorrect network
ALL
40
frequency detected
Flame loss more than
ALL
41
6 consecutive times
ALL
42
Button fault
Open Therm
ALL
43
communication fault
No flame valve
ALL
44
opening time sum
anomaly
Lock for ∆T delivery/
ALL
56
return over max limit
(open vent)
Lock for flow
ALL
57
temperature (FT)
check (open vent)
Self-calibrating
ALL
62
procedure is required
Incorrect positioning
ALL
72
of the delivery sensor
EN
Solution
- Check the integrity of the
electrode and check that it
is not grounded
- Check the integrity of the
gas valve and the card
- Check the rotation of the
pump rotor
- Check the electrical
connections
- Replace the pump
- Check PAR 02 "hydraulic
configuration"
- Check the electrical
connection
- Check the electrical
connection
- 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
connection 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
unblocking 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/
detection 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-
calibrating procedure (see
the specific section)
- Check delivery sensor
operation and position