M
■ Topping-up the system with water
The water pressure in the central heating circuit
must be checked during the entire period of
operation of the boiler. In this respect, the
reading on the pressure gauge M (see fig. 2),
located on the lower part of the boiler, must not
be less than 1 bar.
If there is insufficient water in the boiler, the
code H2O will flash on the display (see “Control
panel”).
To bring the system back up to pressure, open
the external filling loop valve (see fig. 3) and
use the pressure gauge M (see fig. 2) to check
that the system pressure reaches 1 bar and that
the code H2O lights up.
When the operation is complete, close the fill
valve.
Diagnostics – Error codes:
This paragraph contains a list of error codes that
the boiler may generate on the display 7 (see
“Control panel”) together with the relative
indications and the operations 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.
_E01
E01E01
E01_ 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 “Control panel”) on the control panel.
When the error code on the display disappears, the boiler will restart.
If the problem persists, Call the Service Centre.
_E02
E02E02
E02_ Safety Thermostat tripped
Code E02 lit continuously on the display. Call the Service Centre.
_E03
E03E03
E03_ Flue Gas Thermostat tripped
Code E03 lit continuously on the display. Call the Service Centre.
_h2o
h2oh2o
h2o_ 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 fig. 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”.
The boiler will restart automatically.
If the problem persists, Call the Service Centre.
Fig. 2
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