Joannes ELLEN MD 30 BI 100 Instrucciones De Uso página 28

Burner assembly removal and cleaning
To remove the burner assembly:
• Disconnect the power and turn off the gas ahead of the boiler;
• Undo the nut fixing the gas supply pipe ahead of the gas valve;
• Undo the two nuts fixing the combustion chamber door to the cast iron elements of
the boiler (fig. 22)
• Remove the burner assembly and combustion chamber door.
Then check and clean the main burners and pilot burner. Make sure to only use a non-
metallic brush or compressed air to clean the burners and electrodes; never use chemi-
cal products.
C
fig. 22 - Removing the burners
Pilot burner assembly
1
1
fig. 23 - Pilot burner
1 Ignition electrode
2 Detection electrode
28 EN
D
A
B
B
2
2
cod. 3540Z870 - 01/2011 (Rev. 00)
ELLEN MD 30 BI 100
4.4 Troubleshooting
Diagnostics
The boiler is equipped with an advanced self-diagnosis system. In case of a boiler fault,
the display will flash together with the fault symbol (detail 22 - fig. 1) indicating the fault
code.
There are faults that cause permanent shutdown (marked with the letter "A"): to restore
operation, press the RESET button (detail 8 - fig. 1) for 1 second or RESET on the op-
tional remote timer control if installed; if the boiler fails to start, it is necessary to firstly
eliminate the fault.
Faults marked with the letter "F" cause temporary shutdowns that are automatically reset
as soon as the value returns within the boiler's normal working range.
Table. 2 - List of faults
Fault
Fault Possible cause
code
No gas
Ignition/detection electrode
A01 No burner ignition
fault
Faulty gas valve
Ignition power too low
Electrode fault
Flame present signal
A02
with burner off
Card fault
Heating sensor damaged
Overtemperature protec-
A03 No water circulation in the
tion activation
system
Air in the system
Fume thermostat contact
Fume thermostat acti-
open
vated (after activation of
F04 the fume thermostat, Wiring disconnected
boiler operation is pre-
Flue obstructed or not cor-
vented for 20 minutes)
rectly sized
Low pressure in the gas sys-
tem
No flame after the igni-
A06
tion phase
Burner minimum pressure
setting
Sensor damaged
F10 Delivery sensor 1 fault Wiring shorted
Wiring disconnected
Sensor damaged
F11 DHW sensor fault Wiring shorted
Wiring disconnected
Sensor damaged
F14 Delivery sensor 2 fault Wiring shorted
Wiring disconnected
Supply voltage under
F34 Electric mains trouble
170V.
F35 Faulty mains frequency Electric mains trouble
System empty
Incorrect system water
F37
pressure
Sensor damaged
Probe damaged or wiring
shorted
F39 External probe fault
Probe disconnected after
activating the sliding tem-
perature
Incorrect system water
F40 Pressure too high
pressure
Delivery sensor discon-
A41 Sensor positioning
nected from the pipe
F42 Heating sensor fault Sensor damaged
No system H
Exchanger protection
F43
trips.
Air in the system
System water pressure
F47 Wiring disconnected
sensor fault
F50 Modureg fault Wiring disconnected
Cure
Check the regular gas flow to the boiler and
that the air has been eliminated from the
pipes
Check the wiring of the electrode and that it is
correctly positioned and free of any deposits
Check the gas valve and replace it if neces-
sary
Adjust the ignition power
Check the ionisation electrode wiring
Check the card
Check the correct positioning and operation
of the heating sensor
Check the circulating pump
Vent the system
Check the thermostat
Check the wiring
Replace the flue
Check the gas pressure
Check the pressures
Check the wiring or replace the sensor
Check the wiring or replace the sensor
Check the wiring or replace the sensor
Check the electrical system
Check the electrical system
Fill the system
Check the sensor
Check the wiring or replace the sensor
Reconnect the external probe or disable the
sliding temperature
Check the system
Check the safety valve
Check the expansion tank
Check the correct positioning and operation
of the heating sensor
Replace the sensor
O circulation
Check the circulating pump
2
Vent the system
Check the wiring
Check the wiring