Riello Start Aqua Condens 25/60 BIS Installer And User Manual page 33

4.5 Display and fault codes
BOILER STATUS
Off status (OFF)
Stand-by
ACF alarm lockout module
ACF electronics fault alarm
Limit thermostat alarm
Tacho fan alarm
Water pressure switch alarm
NTC storage tank fault
NTC outlet fault temperature
Flue gases probe
Heating delivery
Outlet/return line probe
differential alarm
NTC heating
return line fault
Flue gases probe
HEATING RETURN LINE
Outlet/return line probe
differential alarm
Cleaning the primary
heat exchanger
NTC flue gases fault
Flue gases probe over-
temperature
Parasite flame
Low temperature system
thermostat alarm
Temporary, pending ignition
Water pressure switch
intervention
Calibration service
Calibration installer
Chimney sweep
Vent cycle
External probe presence
Domestic water heat request
Heating heat request
Antifreeze heat request
Flame present
To restore operation (reset alarms):
Faults A01-02-03
Turn the mode selector to
the selector to the required position.
If the reset attempts do not reactivate the boiler, request the
intervention of the Technical Assistance Centre.
Fault A04
In addition to the fault code, the digital display displays the symbol
.
Check the pressure value indicated by the water gauge:
if it is less than 0.3 bar, position the function selector on
adjust the filling tap until the pressure reaches a value between 1
and 1.5 bar. Then turn the function selector to the required position.
The boiler will carry out a venting cycle lasting about 2 minutes.
If pressure drops are frequent, request the intervention of the
Technical Assistance Centre.
Fault A06
The boiler functions normally but does not guarantee a constant
domestic hot water temperature, which remains set at around 50°C.
The intervention of the Technical Assistance Centre is required.
DISPLAY TYPE OF ALARM
OFF None
- Signal
Definitive lockout
A01
Definitive lockout
A02
Definitive lockout
A03
Definitive lockout
A04
Signal
A06
stop
switch-off
Temporary
A07
then final
Definitive lockout
stop
switch-off
Temporary
A08
then final
Definitive lockout
Signal
A09
Definitive lockout
stop
A11
switch-off
stop
A77
switch-off
80°C stop
flashing switch-off
stop
switch-off
flashing
Signal
ADJ
Signal
ACO
Signal
Signal
Signal
60°C
Signal
80°C
Signal
Signal
OFF, wait 5-6 seconds, then return
Fault A07-A08
Contact the Technical Assistance Centre.
Fault A09
Turn the mode selector to
the selector to the required position.
If the reset attempts do not reactivate the boiler, request the
intervention of the Technical Assistance Centre.
Fault A09
The boiler is equipped with an auto-diagnostic system which,
based on the total number of hours in certain operating conditions,
can signal the need to clean the primary exchanger (alarm code 09
and flue gas probe meter >2,500).
Once the cleaning operation has been completed, reset to zero the
total hour meter with special kit supplied as an accessory following
procedure indicated below:
- switch off the power supply
- remove the housing
- turn the instrument panel forward
- remove the cover of the electrical parts by means of the fixing
hooks
- while the boiler is being fed electrically, press the CO button for
at least 4 seconds to verify the successful reset of the meter.
Disconnect and connect again the power supply to the boiler the
meter value is displayed after the signal "- C -".
9
Live electrical parts (230 Vac).
NOTE: the meter resetting procedure should be carried out after
each in-depth cleaning of the primary exchanger or if this latter
is replaced. To check the status of the totalled hours, multiply the
value read by 100 (e.g. value read 18 = total hours 1800 - value
read 1= total hours 100).
The boiler continues to operate normally with the active alarm.
Fault A77
The fault is self-resetting, if the boiler does not restart contact the
Technical Assistance Centre.
4.6 Temporary switch-off
In the event of temporary absences (weekends, short trips, etc.)
set the mode selector to
9
In this way (leaving the electricity and fuel supplies enabled),
the boiler is protected by the following systems:
- antifreeze: when the boiler water temperature falls to 7°C, the
circulator is activated and, if necessary, also the burner (at the
minimum output) to bring the water temperature back within
the safety values (35°C). The
indicating that the anti-freeze function is active.
- circulator anti-blocking: an operation cycle is activated every 24 h.
4.7 Switching off for long periods
OFF and
If the boiler is not used for a long time, the following operations
must be carried out:
- set the mode selector to
- set the system's main switch to "off"
- close the fuel and water taps of the heating and domestic hot
water system.
9
In this case, the anti-freeze and anti-blocking systems are
deactivated.
9
Drain the heating and domestic water system if there is any
risk of freezing.
OFF, wait 5-6 seconds, then return
(OFF).
icon will flash on the display,
off (OFF)
ENGLISH
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