74
8.5
Unscheduled maintenance
If replacing the
electronic board
, the user MUST set the parame-
ters as indicated in the table and in the sequence shown.
Setting for
MURELLE.HT
PAR 01
PAR 02
Index showing
boiler power
in kW and type
of boiler
Hydraulic
configuration
and system
type
MURELLE.HT 25 (Methane)
2
1
MURELLE.HT 30 (Methane)
3
1
MURELLE.HT 35 (Methane)
4
1
MURELLE.HT 25 (GPL)
6
1
MURELLE.HT 30 (GPL)
7
1
MURELLE.HT 35 (GPL)
8
1
MURELLE.HT 25 (I2E)
10
1
MURELLE.HT 30 (I2E)
11
1
MURELLE.HT 35 (I2E)
12
1
To enter "
" 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 "
cific section.
refill the boiler as described in section "
" "
" described in the specific section.
8.6
Malfunction codes and possible solutions
LIST OF MALFUNCTION/FAULT ALARMS
Type
No.
Fault
Solution
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 1
fault
- Check PAR 02 "hydraulic
configuration"
- 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 fault
- Check the fan rpm
- Check the electronic circuit
board
ALL
19
External sensor
fault
- Check the sensor connection
- Check the sensor is working
ALL
20
Boiler configuration
failure (PAR 01
and PAR 02 not
configured)
- Configure the boiler (see the
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
31
PT1000 sensor fault
- Replace the sensor
- Contact the Technical
Assistance Centre
ALL
32
Auxiliary sensor 2
fault
- Check PAR 02 "hydraulic
configuration"
- Check the electrical
connection
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
43
Open Therm
communication fault
- Check the OT electric
connection
ALL
46
Mix zone thermostat
intervention fault
- Check the mixer valve is
working
- Check the thermostat is
working
ALL
47
Mix zone sensor
fault
- Check the sensor connection
- Check the sensor is working
Summary of Contents for 8115101
Page 6: ...6 ...