Ariston microSYSTEM 21 RFFI Manuale d'uso - Pagina 10

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The centralised electronic control unit will

ignite the burner, without any manual

intervention but in response to the request

for heating. If, after approximately 10

seconds, the burner has not ignited, the

boiler safety devices will shut off the gas

and the red L.E.D. "F" illuminates. T o reset

the ignition system, the reset button "E"

must be pressed and released. 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.

Adjusting the heating

It is possible to set the temperature of the

heating system by adjusting the knob "G"

between 1 and 5 until the stop on the

"ECO" position. This will vary temperature

from approximately 40˚C to about 65˚C.

T o obtain a higher temperature it is

necessary to turn the Energy Saving System

(ESS) screw "H" clockwise with a small

coin. The knob is now free to turn to the

MAX

position,

which represents

a temperature of

about 80° C.