11
To bring the system back up to pressure, open the external
fi
lling tap
R
(
fi
g. 2) and use the pressure gauge
M
(
fi
g. 2) to check that the system pressure reaches 1-1,5 bar and that the code H2O lights up.
When the operation is complete, close the
fi
ll tap.
2.7 Diagnostics – Error codes
The paragraph contains a list of error codes that the boiler may generate on the display
8
(see
fi
g. 1) together
with the relative indications and the operation that the user can carry out to reset the boiler.
If the problem re-occurs after the following actions have been taken, call an authorised Service
Centre.
Ionisation Block
Code
E01
lit continuously on the display.
●
Check that the gas valve on the boiler and gas meter are open and that there is gas in the mains supply
(or in the tank).
●
Switch off then switch on the appliance using switch 1 (see
fi
g. 1) on the control panel.
●
When the error code on the display disappears, the boiler will restart.
If the problem persists,
Call the Service Centre.
Safety Thermostat Tripped
Code
E02
lit continuously on the display.
Call the Service Centre.
Flue Gas Thermostat Tripped
Code
E03
lit continuously on the display.
Call the Service Centre.
Water Pressure Switch Tripped
Code
H2O
lit continuously on the display.
●
Check the water pressure in the central heating circuit. The reading on the pressure gauge
M
(see
fi
g. 2),
located on the lower part of the boiler, must not be less than 1 bar .
●
If the pressure is less than 1 bar, top-up the system as described in paragraph “Filling the System With
Water”.
●
The boiler will restart automatically.
If the problem persists,
Call the Service Centre.
Heating Sensor Malfunction
Code
E05
lit continuously on the display.
Call the Service Centre.
D.H.W Sensor Malfunction
Code
E06
lit continuously on the display.
Call the Service Centre.
Electric Fan Mulfunction
Code
E16
lit continuously on the display.
Call the Service Centre.
Parameter Programming Request
Code
E22
lit continuously on the display.
Call the Service Centre.
Flame Detection Mulfunction
Code
E35
lit continuously on the display.
Call the Service Centre.
N.B.
If the boiler is to be left unused for a long period of time,
the user must do one of the following:
●
If the boiler is to be left unused at summer period (such as summer holiday):
Make the boiler safe by disconnecting all the power supplies (electricity, gas and water).
●
If the boiler is to be left unused at winter period:
Leave the boiler in standby, leaving the electricity and gas supplies connected and, consequently the anti-
freeze function.
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