E

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C

E

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ECONOMY/COMFORT MODE

The selector knob “E” allows the user to choose the economy mode (position “E”) or the comfort mode (position “C”).

The economy mode is the normal state for the operation of the boiler, since the domestic water is heated up only when a tap is turned on.

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C

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The comfort mode is a special operating state, because the water contained in the secondary exchanger and in the primary exchanger is kept in a pre-heated condition, thereby allowing a quicker delivery of Domestic Hot Water when required.

TURNING OFF THE CENTRAL HEATING

To turn off the Central Heating, rotate the “C” knob to the “0” position.

The boiler will stay in ‘summer’ mode, providing Domestic Hot Water on request.

TURNING OFF THE BOILER

To turn the boiler off, rotate the selector knob “A” to the “0” position (OFF); the display will go off. Close the gas cock located under the boiler and turn the electricity supply switch (located outside the boiler) to the OFF position.

3.USEFUL INFORMATION AND TROUBLESHOOTING

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BOILER SHUTDOWN SITUATIONS

The boiler is equipped with safety devices that intervene in certain situations and shut it off. Most of these situations are signalled by means of the L.E.D.s and in some circumstances the user may be able to remedy them.

SHUTDOWN DUE TO IGNITION FAILURE

This anomaly is indicated by “A 01” on the display. To reset the boiler, press and then release the “D” button.

At this point, the electronic ignition system will attempt to light the burner again.

Should the boiler fail to ignite a second time, check that the external gas cock is open. If the problem persists, contact an Authorised Service Centre.

SHUTDOWN DUE TO OVERHEATING

This anomaly is indicated by “A 03” on the display. The boiler has shutdown because the safety thermostat detected that the boiler temperature has exceeded the maximum limit.

To reset this state, wait until the boiler has cooled and press the button “D”.

If the safety thermostat operates on a frequent basis, contact one of our Authorised Service Centres.

SHUTDOWN DUE TO INSUFFICIENT WATER CIRCULATION

This anomaly is indicated by “E 02” on the display.

One of the possible causes of this shutdown situation could be the lack of water in the boiler or water circulation failure in the primary heating circuit.

Check the system pressure on the pressure gauge “K” and, if it is less than 0.5 bar, try bringing the system pressure up to a mean value

of 1.0 bar by opening the water inlet valve. Then reset by K turning the boiler off and then back on by pressing the button “D”.

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