Ariston HS C 24 FF NG Manuel - Page 19

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Operation shutdown

This type of error is "non-volatile", which means that it is not

removed automatically.

On the display flash Err and the error code (es. Err/501), and

appears the symbol

In this case the boiler does not restart automatically, but it may

be reset by pressing the RESET button.

If the problem manifests itself again after several attempts to

reset the appliance, contact a qualified technician.

HS C

Important

If this shutdown occurs frequently, contact an authorised service centre

for assistance. For safety reasons, the boiler will allow a maximum of 5

reset operations to take place in 15 minutes (individual presses of the

RESET button). If the shutdown is occasional or an isolated event, this is

not Necessarily a problem.

Operation shutdown error table

Display Description

1 01

Overheating

1 03

1 04

1 05

Flow Check Failed

1 06

1 07

1 08

Filling Needed

3 05

PCB Fault

3 06

PCB Fault

3 07

PCB Fault

5 01

No flame detection

Anti-frost Device.

The anti-frost function acts on the central heating flow temperatu-

re probe, independently from other regulations, when the electrical

supply is turned on.

If the primary circuit temperature falls below 8°C the pump will

run for 2 minutes.

After the two minutes of circulation (fixed) the boiler will check

the following:

a) if the central heating flow temperature is > 8°C, the pump

stops;

b) if the central heating flow temperature is between 4 and 8°C,

the pump will run for another two minutes;

c) if the central heating flow temperature is < 4°C, the burner will

fire (heating position) at minimum power until the temperature

reaches 33°C, the burner will go out and the pump will conti-

nue to run for two minutes.

If the flow temperature remains between 4-8°C the pump will

continue to run for two minutes for a maximum of 10 times

unless a temperature above 8°C is detected in the central hea-

ting flow, after this the the burner will fire. If lockout is caused by

overheat the burner is kept OFF.

The anti-frost device activates only when (with the boiler opera-

ting correctly):

- the system pressure is correct;

- the boiler is electrically powered;

- there is a supply of gas.

Change of gas type

Our boilers are designed to function either with Natural

Gas (methane) or L.P.G. gas. If you need to change from

one gas to the other, one of our Authorised Service Cen-

tres must be contacted to convert the appliance.

Maintenance

Schedule an annual maintenance check-up for

the boiler with a competent person.

Correct maintenance always results in savings

in the cost of running the system.

Failure to arrange an annual service for the

appliance will invalidate the second year of the

manufacturers guarantee.

USER'S MANUAL