Ariston ecoSYSTEM 27 RFFI User Manual - Page 6

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USEFUL INFORMATION

Turning Off the Heating

Installation without an external thermostat:

To turn off the heating, turn the "A" selector knob to "

provide domestic hot water.

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Installation with an external thermostat:

To turn off the heating, turn the "A" selector knob to "

provide hot water for domestic use. With an external thermostat, there are a

number of ways to turn off the heating. For additional information, please consult

the relative manual.

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DISPLAY: Viewing Normal Functions

When the system is operating, i.e. while the boiler is fulfiling its normal functions,the

left-hand display will show a series of letters indicating the following functions:

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Diagnostics Stage (precedes all other functions):

No Request for Heat

Heating, Burner Off

C. Heating, Burner On

Pump Overrun for Heating

Water for Domestic Use, Burner Off

d. Water for Domestic Use, Burner On

Pump Overrun for Water for Domestic Use

Storage Cylinder, Burner Off (SYSTEM version)

b. Storage Cylinder, Burner On (SYSTEM version)

: the flashing dot on the left-hand display always indicates "burner off"; the

OTE

still dot indicates "burner on".

The right-hand display (two-digit) shows:

- in heating mode: temperature of heating system flow;

- in domestic hot water mode: temperature domestic hot water.

Boiler Shutdown

The boiler is equipped with safety devices which intervene in certain situations

to shutdown the boiler. Some of these situations are signalled by the boiler and

can be corrected by the user.

Shutdown Due to Ignition Failure

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This anomaly is indicated by "A01" on the display. To reset the boiler, press and

then release the "H" 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

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Centre.

Shutdown Due to Overheating

This anomaly is indicated by "E03" on the display. The boiler has shutdown

because the safety thermostat detected that the boiler temperature has exceed-

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ed the maximum limit.

To reset this state, wait until the boiler has cooled and press the button "H".

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 "A21" on the display.

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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.

". The boiler will still

" The boiler will still