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2.4 DESCRIPTION OF FUNCTIONING
STATES.
Below find a list of boiler functioning states
that appear on the multifunction display (24)
by means of the indicator (6) with a brief
description. Refer to the instruction book for a
complete explanation.
Display (6)
Description of functioning states
SUMMER
Summer functioning mode without request in progress.
Boiler in stand-by for domestic hot water request (*).
WINTER
Winter functioning mode without request in progress.
Boiler in stand-by for domestic hot water (*) or central heating request.
(*)
DHW ON
Domestic hot water mode in progress.
Boiler functioning, domestic hot water heating in progress.
CH ON
Central heating mode in progress.
Boiler functioning, central heating in progress.
F3
Anti-freeze mode in progress.
Boiler functioning to restore the minimum safety temperature against boiler freezing.
CAR OFF
Remote Control (Optional) off.
(*)
DHW OFF
With domestic hot water priority disabled (indicator 15 off), the boiler only functions in room central heating mode for 1 hour,
however keeping the domestic hot water at minimum temperature (10°C), after which the boiler goes back to the normal func-
tioning, previously set.
In the case of use with Super CAR in concomitance with the functioning period in reduced D.H.W. Timer mode, DHW OFF will
appear on the display and indicators 15 and 2 switch off (see Super CAR instructions manual).
F4
Postventilation in progress.
Fan operating after that the burner has been switched off to evacuate residual fumes.
F5
Postcirculation in progress.
Circulator operating after that the burner has been switched off to cool the primary circuit.
P33
With Remote Control (Optional) or environment thermostat (TA) (Optional) in block, the boiler functions all the same in central
heating mode. (Can be activated through the “Customisation” menu. It allows to activate the central heating even if the Remote
Control or TA are out of order).
STOP
Reset attempts finished.
Wait for 1 hour to re-acquire 1 attempt.
(See Ignition block).
ERR xx
Anomaly present with relative error code.
The boiler does not work. (see troubleshooting paragraph).
SET
During the rotation of the domestic hot water temperature selector switch (1 Fig. 2-1) view the state of the adjustment of the
domestic hot water temperature in progress.
During rotation of the central heating selector switch (3 Fig. 2-1) the adjustment status of the boiler flow temperature for central
heating is displayed.
In presence of the external probe (optional) replace the “SET” item.
The value that appears is the correction of the flow temperature with respect to the functioning curve set by the external probe. See
OFFSET on external probe graphics (Fig. 1-7).
F8
System deaeration in progress.
During this phase, which lasts 18 hours, the boiler pump is started at pre-established intervals, thus allowing deaeration of the
heating system.
(*) N.B.:
(when the boiler is connected to an external storage tank)
