63
7.5
Unscheduled maintenance
If replacing the
electronic board
, the user MUST set the
parameters as indicated in the table.
Type No. Description
Setting for
Murelle
Revolution 25
PAR 01
Index showing boiler power in kW
5 = 25 (Murelle Revolution 25)
6 = 30 (Murelle Revolution 25 30)
5
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
0
PAR 03 Gas Type Configuration
0 = G20/G25; 1 = G31
0 or 1
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.
7.6
Malfunction codes and possible solutions
Boiler fault (gas side)
Type
No. Fault
Solution
ALL
01 Not used
-
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
- 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 gas availability and
pressure
- Check the integrity of the gas
valve and the card
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
Type
No. Fault
Solution
ALL
11
Gas valve
modulator
disconnected
- Check the electrical connection
ALL
12
Incorrect
configuration of
the open /sealed
chamber
- Set the parameter PAR 04
(Combustion configuration) to 0
ALL
13 Smoke probe
intervention
- Replace the smoke probe
- Contact the Technical
Assistance Centre
ALL
14 Smoke probe fault
- Replace the smoke probe
- Check the electrical connection
of the smoke probe, if the
problem is not resolved, contact
the 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 (SR)
fault
- 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
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
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
ALL
82
Block due to
numerous
combustion
control failures
- Check electrode
- Check outlets
ALL
84
Flow rate reduced
for (presumed) low
pressure on mains
gas
- Check gas flow rate
ALL
88
Internal error
(board component
protection)
- Check the board is working
- Replace board
