9
ENGLISH
4.3 Light signals and faults
Torestoreoperation(deactivatealarms):
BOILER STATUS
DISPLAY
TYPES OF
ALARMS
Off status(OFF) OFF None
Stand-by - Signal
ACF alarm lockout module
A01
Denitive lockout
ACF electronics fault alarm
Limit thermostat alarm
A02
Denitive lockout
Tacho fan alarm
A03
Denitive lockout
Water pressure switch alarm
A04
Denitive lockout
NTC domestic water fault (only when con-
nected to an external storage tank with
probe)
A06 Signal
NTC heating outlet fault
A07
Temporary stop
Heating outlet probe overtemperature
Temporary then
denitive
Outlet/return line probe differential alarm Denitive lockout
NTC heating return line fault
A08
Temporary stop
Heating return line probe overtemperature
Temporary then
denitive
Outlet/return line probe differential alarm Denitive lockout
Cleaning the primary heat exchanger
A09
Signal
NTC ue gases fault Temporary stop
Flue gases probe overtemperature Denitive lockout
False ame
A11
Temporary stop
Low temperature system thermostat alarm
A77
Temporary stop
Temporary pending ignition
80
°
C
ashing
Temporary stop
Water pressure switch intervention
ashing
Temporary stop
Calibration service
ADJ
Signal
Calibration installer
Chimney sweep
ACO
Signal
Vent cycle Signal
External probe presence Signal
Domestic water heat request 60
°
C
Signal
Heating heat request 80
°
C
Signal
Antifreeze heat request Signal
Flame present Signal
Faults A 01-02-03
Position the function selector to (OFF), wait 5-6 seconds then set it to
the required position (summer mode) or (winter mode).
If the reset attempts do not reactivate the boiler, contact the Technical As-
sistance Centre.
Fault A04
In addition to the fault code, the digital display shows the symbol .
Check the pressure value indicated by the water gauge:
if it is less than 0.3 bar, position the function selector to (OFF) and adjust
the lling tap until the pressure reaches a value between 1 and 1.5 bar.
Then position the mode selector to the desired position (summer) or
(winter). The boiler will perform one purge cycle lasting approximate-
ly 2 minutes. If pressure drops are frequent, request the intervention of the
Technical Assistance Service.
Fault A06
Contact the Technical Assistance Centre.
Fault A07
Contact the Technical Assistance Centre.
Fault A08
Contact the Technical Assistance Centre.
Fault A09
Position the function selector to (OFF), wait 5-6 seconds then set it to the
required position (summer mode) or (winter mode).
If the reset attempts do not reactivate the boiler, request the intervention of
the Technical Assistance Service.
Fault A09
The boiler is equipped with an auto-diagnostic system which, based on the
total number of hours in certain operating conditions, can signal the need to
clean the primary exchanger (ue gas meter >2,500).
Once the cleaning operation has been completed, using the special kit sup-
plied as an accessory, the total hour meter will need to be reset to zero as
follows:
- switch off the power supply
- remove the housing
- loosen the xing screw then turn the instrument panel
- loosen the xing screws on the cover (F) to access the terminal board (g. 16)
- while the boiler is powered up, using a small screwdriver included, press
the CO button (g. 26) for at least 4 seconds, to check the meter has
been reset, power down then power up the boiler; the meter reading is
shown on the monitor after the “-C-” sign.
Liveelectricalparts(230VAC).
Note: the meter resetting procedure should be carried out after each in-
depth cleaning of the primary exchanger or if this latter is replaced. To
check the status of the total hour meter, multiply the reading by 100 (e.g.
reading of 18 = 1800 total hours; reading of 1 = 100 total hours).
The boiler continues to operate normally even when the alarm is activated.
Fault A77
This is an automatic-reset fault, if the boiler does not restart, contact the
Technical Assistance Centre.
4.4Boilerconguration
There is a series of jumpers (JPX) available on the electronic board which
enable the boiler to be congured.
To access the board, proceed as follows:
- turn off the main switch on the system
- loosen the xing screws on the housing, move the base of the housing
forwards and then upwards to unhook it from the chassis
- undo the xing screws (E) from the instrument panel (g. 14)
- loosen the screws (F - g. 16) to remove the cover of the terminal board
(230V).
JUMPERJP7-g.37:
preselection of the most suitable heating temperature adjustment eld ac-
cording to the installation type.
Jumper not inserted - standard installation
Standard installation 40-80°C.
Jumperinserted-oorinstallation
Floor installation 20-45°C.
In the manufacturing phase, the boiler is congured for standard installations.
JP1
Calibration (see paragraph on “Adjustments”)
JP2 Reset heating timer
JP3 Calibration (see paragraph on “Adjustments”)
JP4 Do not use
JP5
Heating only function with a predisposition for external storage tank
with thermostat (JP8 inserted) or probe (JP8 not inserted)
JP6 Enable night-time compensation function and continuous pump (only
with external sensor connected)
JP7 Enable management of low temperature/standard installations (see
above)
JP8
Management of an external storage tank with thermostat enabled
(jumper inserted)/ management of an external storage tank with pro-
be (jumpers not inserted) g. 37.
The boiler foresees jumpers JP5 and JP8 inserted as standard (heating
only version arranged for storage tank with thermostat); if the use of an
exterior storage tank with probe is required, jumper JP8 must be removed.
4.5Settingthethermoregulation(graphs1-2-3)
The thermoregulation only operates with the external sensor connected;
once installed, connect the external sensor (accessory available on re-
quest) to the special terminals provided on the boiler terminal board (g. 5).
This enables the THERMOREGULATION function.
Selecting the compensation curve
The compensation curve for heating maintains a theoretical temperature of
20°C indoors, when the external temperature is between +20°C and -20°C.
The choice of the curve depends on the minimum external temperature
envisaged (and therefore on the geographical location), and on the delivery
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