Ferroli BLUEHELIX TECH A, Instructions For Use, Installation And Maintenance

Page: 40 / 88

BLUEHELIX TECH A
40 EN
4.3 Maintenance
Opening the front panel
To open the boiler casing:
1.
Partially undo the screws A (see fig. 25).
2. Pull the panel B outwards and release it from the upper fastenings.
B
Before carrying out any operation inside the boiler, disconnect the power and
close the gas cock upstream
fig. 25 - Front panel opening
B
On this unit, the casing also acts as a sealed chamber. After any opera-
tion involving opening the boiler, carefully check the correct refitting of
the front panel and its seal.
Proceed in reverse order to refit the front panel. Make sure it is correctly hooked to the
upper fastenings and is correctly positioned at the sides. When tightened, the head of
screw "A" must not be below the lower fold (see fig. 26).
fig. 26 - Correct position of front panel
Periodical check
To ensure correct operation of the unit over time, have qualified personnel carry out a
yearly check, providing for the following:
•
The control and safety devices (gas valve, flow meter, thermostats, etc.) must func-
tion correctly.
• The fume exhaust circuit must be perfectly efficient.
• The sealed chamber must be tight.
• The air/fume terminal and ducts must be free of obstructions and leaks
• The burner and exchanger must be clean and free of deposits. Do not use chemical
products or wire brushes to clean.
• The electrode must be properly positioned and free of scale.
• The gas and water systems must be tight.
• The water pressure with system cold must be approx. 1 bar; otherwise bring it to that
value.
• The circulating pump must not be blocked.
• The expansion tank must be filled.
• The gas flow and pressure must match that given in the respective tables.
• The condensate removal system must be efficient, with no leaks or obstructions.
• The trap must be full of water.
4.4 Troubleshooting
Diagnostics
In case of operation faults or problems, the display flashes and the fault identification
code appears.
There are faults that cause permanent shutdown (marked with the letter “
A ”): to restore
operation just press the reset button (detail 6 -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 of faults
Table. 8 - List of faults
A
A
B
A
OK NO
Fault code Fault Possible cause Cure
A01 No burner ignition
No gas
Check the regular gas flow to the
boiler and that the air has been elimi-
nated from the pipes
Ignition/detection elec-
trode fault
Check the wiring of the electrode and
that it is correctly positioned and free
of any deposits
Faulty gas valve
Check the gas valve and replace it if
necessary
Insufficient gas supply
pressure
Check the gas supply pressure
Trap blocked
Check the trap and clean it if neces-
sary
A02
Flame present signal
with burner off
Electrode fault Check the ionisation electrode wiring
Card fault Check the card
A03
Overtemperature protec-
tion activation
Heating sensor damaged
Check the correct positioning and
operation of the heating sensor
No water circulation in
the system
Check the circulating pump
Air in the system Vent the system
A04
Fume extraction duct
safety device activation Fault F07 generated 3
times in the last 24 hours See fault F07
A05 Fan protection activated
Fault F15 generated for 1
hour (consecutive)
See fault F15
A06
No flame after ignition
stage (6 times in 4 min-
utes)
Ionisation electrode fault Check the position of the ionisation
electrode and replace it if necessary
Flame unstable Check the burner
Gas valve Offset fault Check the Offset adjustment at mini-
mum power
air/fume ducts obstructed
Remove the obstruction from the flue,
fume extraction ducts and air inlet and
terminals
Trap blocked
Check the trap and clean it if neces-
sary
F07 High fume temperature
The fume probe detects
an excessive tempera-
ture
Check the exchanger
F10 Delivery sensor 1 fault
Sensor damaged
Check the wiring or replace the sen-
sor
Wiring shorted
Wiring disconnected
F11 Return sensor fault
Sensor damaged
Check the wiring or replace the sen-
sor
Wiring shorted
Wiring disconnected
F12 DHW sensor fault
Sensor damaged
Check the wiring or replace the sen-
sor
Wiring shorted
Wiring disconnected
F13 Fume probe fault
Probe damaged
Check the wiring or replace the fume
probe
Wiring shorted
Wiring disconnected
F14 Delivery sensor 2 fault
Sensor damaged
Check the wiring or replace the sen-
sor
Wiring shorted
Wiring disconnected
F15 Fan fault
No 230V power supply Check the 8-pin connector wiring
Tachometric signal inter-
rupted
Check the 8-pin connector wiring
Fan damaged Check the fan
F34
Supply voltage under
170V
Electric mains trouble Check the electrical system
F35 Faulty mains frequency Electric mains trouble Check the electrical system
F37
Incorrect system water
pressure
Pressure too low Fill the system
Water pressure switch
damaged or not con-
nected
Check the sensor
F39 External probe fault
Probe damaged or wiring
shorted Check the wiring or replace the sen-
sor
Probe disconnected after
activating the sliding tem-
perature
Reconnect the external probe or disa-
ble the sliding temperature
A41 Sensor positioning
Delivery sensor discon-
nected from pipe Check the correct positioning and
operation of the heating sensor
cod. 3541C617 - Rev. 02 - 07/2014