Installation guide

8
Error codes
No flame – F1
This signals automatic
irreversible blocking of
the automatic ignition
and closure of the
gas valve, i.e. LOSS
OF FLAME. This
blocking occurs always in the mode when
the gas valve is open and no feedback
signal about the presence of the fl ame is
sent. The boiler is switched off and cannot
be started.
This fault however may be caused by
intervention with the safety elements
– emergency thermostat and combustion
gas thermostat.
Press the RESET button (fi g. 1, position 6)
to unblock the fault. If the fault persists call
an authorised service.
Sensor error – F2
This signals a fault
of the heating water
sensor or a drop in
temperature of the
heating water below
3°C. The boiler is
switched off and cannot be started. Call
an authorised service.
Boiler overheated – F3
This signals a heating
water temperature
higher than 95°C. The
boiler is shut down
and restarts itself
automatically after
the water has cooled.
Sensor error – F4
This signals a fault of
the hot water sensor.
Heating of the hot
water tank is blocked,
whilst the mode
of heating into the
system is not affected by this fault.
Outdoor sensor error – F5
This signals a fault
of the outdoor
temperature sensor
when equithermal
boiler regulation
is set. The boiler
continues unlimited in its activity, but the
heating water temperature is regulated
according to the value set on the boiler
(see “Setting heating water temperature”,
page 5).
If the boiler is not in equithermal regulation
mode this fault does not occur.
Timer switch
The timer switch serves for setting
attenuation of heating the hot water in
the tank, i.e. during the interval of the set
attenuation the boiler does not heat the
water in the hot water tank to maintain
temperature. The length of the attenuation
interval is set by the cogs on the perimeter
of the clock rotor. The interval is set to
where the cogs face outwards – see
diagram. There may be more than one
interval, i.e. there may be a number of
attenuations per day.