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4.3 Maintenance
IMPORTANT
B
ALL MAINTENANCE WORK AND REPLACEMENTS MUST BE CARRIED
OUT BY SKILLED QUALIFIED PERSONNEL.
Before carrying out any operation inside the boiler, disconnect the power
and close the gas cock upstream. Otherwise there may be a danger of ex-
plosion, electric shock, suffocation or poisoning.
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
A
A
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).
OK
fig. 26 - Correct position of front panel
Periodical check
To ensure proper operation of the unit over time, have qualified personnel carry out a
yearly inspection, providing for the following checks:
•
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 end piece and ducts must be free of obstructions and leaks
•
The burner and exchanger must be clean and free of deposits. For cleaning do not
use chemical products or wire brushes.
•
The electrode must be properly positioned and free of scale.
•
The gas and water systems must be tight.
•
The water pressure in the system when 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 evacuation system must be efficient with no leakage or obstructions
•
The trap must be full of water.
•
Check the quality of the water in the system.
44
EN
B
A
NO
cod. 3541F554 - Rev. 00 - 11/2018
BLUEHELIX PRO C
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
Fault code Fault
Possible cause
No gas
Ignition/detection electrode
fault
A01
No burner ignition
Faulty gas valve
Insufficient gas supply pres-
sure
Trap blocked
Electrode fault
Flame present signal with
A02
burner off
Card fault
Heating sensor damaged
Overtemperature protection
A03
No water circulation in the sys-
intervention
tem
Air in the system
Fume extraction duct safety
Fault F07 generated 3 times in
A04
device intervention
the last 24 hours
Fault F15 generated for 1 hour
A05
Fan protection activated
(consecutive)
Ionisation electrode fault
Flame unstable
Gas valve Offset fault
No flame after ignition stage
A06
(6 times in 4 minutes)
air/fume ducts obstructed
Trap blocked
The fume probe detects an
F07
High fume temperature
excessive temperature
Sensor damaged
F10
Delivery sensor 1 fault
Wiring shorted
Wiring disconnected
Sensor damaged
F11
Return sensor fault
Wiring shorted
Wiring disconnected
Sensor damaged
F12
DHW sensor fault
Wiring shorted
Wiring disconnected
Probe damaged
F13
Fume probe fault
Wiring shorted
Wiring disconnected
Sensor damaged
F14
Delivery sensor 2 fault
Wiring shorted
Wiring disconnected
No 230V power supply
F15
Fan fault
Tachometric signal interrupted Check the 8-pin connector wiring
Fan damaged
F34
Supply voltage under 170V
Electric mains trouble
F35
Faulty mains frequency
Electric mains trouble
Pressure too low
Incorrect system water pres-
F37
Water pressure switch dam-
sure
aged or not connected
Probe damaged or wiring
shorted
F39
External probe fault
Probe disconnected after acti-
vating the sliding temperature
Heating sensor detached from
A41
Sensor positioning
pipe
Cure
Check the regular gas flow to the
boiler and that the air has been elimi-
nated 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
necessary
Check the gas supply pressure
Check the trap and clean it if neces-
sary
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
See fault F07
See fault F15
Check the position of the ionisation
electrode and replace it if necessary
Check the burner
Check the Offset adjustment at mini-
mum power
Remove the obstruction from the flue,
fume extraction ducts and air inlet
and terminals
Check the trap and clean it if neces-
sary
Check the exchanger
Check the wiring or replace the sen-
sor
Check the wiring or replace the sen-
sor
Check the wiring or replace the sen-
sor
Check the wiring or replace the fume
probe
Check the wiring or replace the sen-
sor
Check the 8-pin connector wiring
Check the fan
Check the electrical system
Check the electrical system
Fill the system
Check the sensor
Check the wiring or replace the sen-
sor
Reconnect the external probe or dis-
able the sliding temperature
Check the correct positioning and
operation of the heating sensor
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