FAULT DESCRIPTION
FAN (cycle start) (D)
FAN CYCLE IN PROGRESS
(high rpm) (D)
INSUFFICIENT SYSTEM
PRESSURE (D**)
INSUFFICIENT SYSTEM
PRESSURE (T**)
WATER PRESSURE
TRANSDUCER (D)
ELECTRONIC CARD (D)
DHW PROBE 1 (T) (°)
MINI-ACCUMULATION ALARM
(not displayed on this model)
PRIMARY PROBE SHORT
CIRCUIT/OPEN (D)
DELIVERY PROBE
OVERTEMPERATURE (T)
RETURN PROBE SHORT
CIRCUIT/OPEN (D)
SECOND HEATING SYSTEM
PROBE ABSENT
LOW TEMPERATURE
THERMOSTAT (T)
DELIVERY/RETURN
DIFFERENTIAL (T)
DELIVERY/RETURN
DIFFERENTIAL (D)
SYSTEM FAULT (D)
SYSTEM FAULT (T)
SYSTEM FAULT (D)
SYSTEM FAULT (T)
BOILER STOP SIGNAL SENT TO THE
OT DEVICES (not displayed on this model)
PRIMARY HEAT EXCHANGER
CLEANING (-)
CONNECTION FAILURE BETWEEN
INTERFACE AND MAIN CARD
CONNECTION FAILURE WITH
THE REMOTE CONTROL PANEL
The display of 43 and
indicates the activation of the automatic
venting cycle, lasting about 2 minutes. For further details, refer to
paragraph "Initial start-up".
(D) Definitive
(T) Temporary. In this operating status, the boiler attempts to resolve
the fault situation autonomously
(°) See the NOTE on the previous page
(**) If these two errors arise, check the pressure shown on the hydrom-
eter.
If the pressure is insufficient (< 0.4 bar - red field), perform the fill-
ing operations described in the "Filling and draining the systems"
chapter.
If the system pressure is sufficient (> 0.6 bar - light blue field), the
fault is due to a lack of circulating water. Contact the Technical
Assistance Centre.
(-) Contact the Technical Assistance Centre.
Icon
Alarm
RESET
code
icon
34
YES
NO
37
YES
YES
40
YES
NO
41
NO
YES
42
YES
YES
50-59
YES
YES
60
NO
YES
65
YES
YES
70
YES
YES
71
NO
NO
72
YES
YES
75
NO
YES
77
NO
YES
78
NO
YES
79
YES
NO
80
YES
YES
81
NO
YES
82
YES
YES
83
NO
YES
89
-
-
91 (-)
NO
YES
J0
-
-
J1
-
-
Q - Regular scheduled maintenance
OPERATIONS
Inspection of sealing components
Cleaning of the primary heat exchanger flue gases side
Cleaning of the combustion chamber,
fan and venturi tubes
Checking of the water and gas safety devices
Checking the gas output and make any adjustments
Checking the draught and flue gases pipe
Cleaning of the burner and checking its firing
Checking the hydraulic operations
Combustion analysis
Checking and lubricating the hydraulic unit components
Checking the system seals
Washing of the heat exchanger
Checking the efficiency of the electric
and electronic components
FAN EFFICIENCY (only for vacuum chamber versions)
Checking the condensate discharge system
CHECKING THE CONDENSATE
NEUTRALISER (if installed)
NOTE: the maintenance operations described above, must be car-
ried out every two years in accordance with regulations in
R - Cleaning
The only cleaning operations that we recommend are those involving
the external boiler panels, which should be cleaned using just a cloth
dampened with soap and water.
In the case of stubborn marks, dip the cloth in a mixture of 50% water
and methylated spirits, or use specific products.
Do not use fuels and/or sponges soaked in abrasive solutions
or powder detergents.
It is forbidden to carry out any cleaning operations before dis-
connecting the boiler from the mains electricity supply; to do
this, turn the main system switch to "off".
ENGLISH
1st
2nd
YEAR
YEAR
°
°
°
°
°
°
°
°
°
°
°
°
°
°
°
°
-
°
-
°
-
°
-
°
-
°
°
°
°
°
°
°
force.
27