19 - IE
INSTALLERUSER
MAINTENANCE TECHNICIAN
2.4 DESCRIPTION OF FUNCTIONING
STATES.
Below nd 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) o.
F7
With Aqua Celeris active, the boiler starts when there is the necessity to pre-heat the water contained in the mini storage tank,
thus guaranteeing almost instantaneous distribution of domestic hot water.
F4
Postventilation in progress.
Fan in function aer a request for domestic hot water or central heating in order to evacuate residual ue gases.
F5
Postcirculation in progress.
Pump in function aer a request for domestic hot water or central heating in order 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 nished.
Wait for 1 hour to re-acquire 1 attempt.
(See Ignition block).
ERR xx
Anomaly present with relative error code.
e 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 ow temperature for central
heating is displayed.
In presence of the external probe (optional) replace the “SET” item.
e value that appears is the correction of the ow 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.
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