14
CIAO GREEN C.S.I.
3a SWITCHING OFF
Temporary switch-off
In case of absence for short periods of time, set the mode selector (
¿
g. 32) to
(OFF).
In this way (leaving the electricity and fuel supplies enabled), the boiler is protected by:
Anti-frost device:
when the temperature of the water in the boiler falls below 5°C, the circulator and, if necessary, the burner are activated at minimum output
levels to bring the water temperature back to the values for safety (35°C). During the anti-frost cycle, the symbol
(
¿
g. 36) appears on the digital monitor.
Circulator anti-blocking function:
an operation cycle is activated every 24 hours.
Switching off for long periods
In case of absence for long periods of time, set the mode selector (
¿
g. 32) to
(OFF). Turn the main system switch OFF. Close the fuel and water taps of
the heating and domestic hot water system. In this case, anti-frost device is deactivated: drain the systems, in case of risk of frost.
4a LIGHT SIGNALS AND FAULTS
The operating status of the boiler is shown on the digital display, below is a list of the types of displays.
BOILER STATUS
DISPLAY
RED LED
YELLOW LED
GREEN LED
TYPES OF
ALARMS
Off status(OFF)
OFF
À
ashing 0.5 on/
3.5 off
None
Stand-by
-
À
ashing 0.5 on/
3.5 off
Signal
ACF alarm lockout module
A01
on
De
¿
nitive lockout
ACF electronics fault alarm
Limit thermostat alarm
A02
À
ashing 0.5 on/
0.5 off
De
¿
nitive lockout
Tacho fan alarm
A03
on
De
¿
nitive lockout
Water pressure switch alarm
A04
on
on
De
¿
nitive lockout
NTC domestic water fault
A06
À
ashing 0.5 on/
0.5 off
À
ashing 0.5 on/
0.5 off
Signal
NTC heating outlet fault
A07
on
Temporary stop
Heating outlet probe overtemperature
Temporary then
de
¿
nitive
Outlet/return line probe differential alarm
De
¿
nitive lockout
NTC heating return line fault
A08
on
Temporary stop
Heating return line probe overtemperature
Temporary then
de
¿
nitive
Outlet/return line probe differential alarm
De
¿
nitive lockout
Cleaning the primary heat exchanger
A09
À
ashing 0.5 on/
0.5 off
À
ashing 0.5 on/
0.5 off
Signal
NTC
À
ue gases fault
Temporary stop
Flue gases probe overtemperature
on
De
¿
nitive lockout
False
À
ame
A11
À
ashing 0.2 on/
0.2 off
Temporary stop
Low temperature system thermostat alarm
A77
on
Temporary stop
Temporary pending ignition
À
ashing 0.5 on/
0.5 off
Temporary stop
Water pressure switch intervention
À
ashing 0.5 on/
0.5 off
Temporary stop
Calibration service
ADJ
À
ashing 0.5 on/
0.5 off
À
ashing 0.5 on/0.5
off
À
ashing 0.5 on/
0.5 off
Signal
Calibration installer
Chimney sweep
ACO
À
ashing 0.5 on/0.5
off
Signal
Vent cycle
À
ashing 0.5 on/
1.0 off
À
ashing 0.5 on/1.0
off
À
ashing 0.5 on/
1.0 off
Signal
Preheating active function
on
Signal
Preheating heat request
À
ashing
Signal
External probe presence
Signal
Domestic water heat request
60
°C
Signal
Heating heat request
80
°C
Signal
Antifreeze heat request
Signal
Flame present
on
Signal
