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ENGLISH
Long period switching off
In case of absence for long periods of time, set the mode selector
(3-g.1a)to
(OFF).
Then,closethegastappresentonthesystem.Inthiscase,anti-
frostdeviceisdeactivated:emptythesystems,incaseofriskof
frost.
4A CONTROLS
Atthebeginningofthe heating season, and occasionally during
use,makesurethehydrometer-thermohydrometerindicatescold
systempressurevaluesbetween0.6and1.5bar:thisavoidssys-
temnoiselevelsduetothepresenceofair.Incaseofinsufcient
water circulation, the boiler will switch off. Under no circumstances,
waterpressuremustbebelow0.5bar(redeld).
Ifthisconditionischecked,itisnecessarytorestorewaterpres-
sure in the boiler proceeding as follows:
-setthemodeselector(3-g.1a)to
(OFF)
-turnonthellingtap(Lg.13)untilthepressurevalueisbe-
tween 1 and 1.5 bar.
Carefullyclosethe tap. Replace the mode selectorontheinitial
position. If pressure drop is frequent, contact the Technical Assis-
tance Service.
5A LIGHT SIGNALS AND FAULTS
Theoperatingstatusoftheboilerisshownonthedigitaldisplay,
belowisalistofthetypesofdisplays.
BOILER STATUS DISPLAY
Stand-by -
OFF status OFF
ACF module lockout alarm
A01
ACF electrical fault alarm
A01
Limit thermostat alarm
A02
Airpressureswitchalarm(C.S.I.models)
Fumes thermostat (C.A.I.models)
A03
H2O pressure switch alarm
A04
NTC domestic water fault A06
NTC heating fault
A07
Parasiteame
A11
Electric calibration min and max heating
ADJ
Transient awaiting ignition 88
°C
ashing
Airpressureswitchintervention(C.S.I.models)
Fumes thermostat intervention(C.A.I.models)
ashing
H2O pressure switch intervention
ashing
External probe present
Domestic water heat request 60
°C
Heating heat request 80
°C
Anti-freeze heat request
Flame present
To restore operation (deactivate alarms):
Faults A 01-02-03
Position the function selector to
(OFF),wait5-6secondsthen
set it to the required position
(summermode)or (winter
mode).Iftheresetattemptsdonotreactivatetheboiler,contactthe
Technical Assistance Centre.
Fault A 04
Inadditiontothefaultcode,thedigitaldisplayshowsthesymbol
.
Checkthepressurevalueindicatedbythewatergauge:
if it is less than 0.3 bar, position the function selector to (OFF)
andadjust the lling tap (Lg.13)until the pressure reaches a
value between 1 and 1.5 bar.
Then position the mode selector to the desired position (sum-
mer)or
(winter).
If pressure drops are frequent, request the intervention of the
Technical Assistance Service.
Fault A 06
Theboileroperatesnormallybutcannotreliablymaintainacon-
stant domestic hot water temperature, which remains set at around
50°C. Contact the Technical Assistance Centre.
Fault A 07
Contact the Technical Assistance Centre.