Riello Start Condens 25 IS, Installer And User Manual

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27
ENGLISH
• Close the fuel and water taps of the heating and domestic hot
water system.
9 In this case, the anti-freeze and circulator anti-locking systems
are deactivated.
• Drain the heating and domestic water system if there is any risk
of freezing.
6 - Display and fault codes
Boiler status Display Type of alarm
Off status(OFF) Off None
Stand-by - Signal
ACF alarm lockout module A01 Definitive lockout
ACF electronics fault alarm A01 Definitive lockout
Limit thermostat alarm
A02
Definitive lockout
Tacho fan alarm
A03
Definitive lockout
Water pressure switch
alarm
A04
Definitive lockout
Water tank fault
A06
Signal
NTC heating outlet fault
A07
Temporary stop
Heating outlet probe over-
temperature
A07
Temporary then
definitive
Outlet/return line probe
differential alarm
A07 Definitive lockout
NTC heating return line
fault
A08
Temporary stop
Heating return line probe
over-temperature
A08
Temporary then
definitive
Outlet/return line probe
differential alarm
A08
Definitive lockout
Cleaning the primary heat
exchanger
A09
Signal
NTC flue gases fault A09 Signal
Flue gases probe over-
temperature
A09
Definitive lockout
Parasite flame
A11
Temporary stop
Low temperature system
thermostat alarm
A77
Temporary stop
Temporary pending ignition 80°C flashing Temporary stop
Water pressure switch
intervention
flashing
Temporary stop
Calibration service
ADJ
Signal
Calibration installer
ADJ
Signal
Chimney sweep
ACO
Signal
Vent cycle Signal
External probe presence Signal
Domestic water heat
request
60 °C
Signal
Heating heat request
80 °C
Signal
Antifreeze heat request Signal
Flame present Signal
To restore operation (reset alarms):
Faults A01-02-03
Position the mode selector on (OFF), wait for 5-6 seconds and
then turn it to the required position.
If the reset attempts do not reactivate the boiler, request the inter-
vention of the Technical Assistance Centre.
Fault A 04
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 OFF and 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 Techni-
cal Assistance Centre.
Fault A 06
Contact the Technical Assistance Centre.
Fault A 07-A 08
Contact the Technical Assistance Centre.
Fault A 09
Position the mode selector on (OFF), wait for 5-6 seconds and
then turn it to the required position.
If the reset attempts do not reactivate the boiler, request the inter-
vention of the Technical Assistance Centre.
Fault A 09
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 after unscrewing its fixing screw
• Undo the fixing screws of the cover (F) to access the terminal
board
While electrically supplying the boiler, press the C button for at least
4 seconds to verify the meter has been reset and then disconnect
and reconnect power 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 A 77
The fault is self-resetting, if the boiler does not restart contact the
Technical Assistance Centre.
7 - Maintenance
Periodic maintenance is an "obligation" required by law and is es-
sential to the safety, efficiency and lifetime of the boiler.
It allows for the reduction of consumption, polluting emissions and
keeping the product reliable over time.
Before starting maintenance operations:
• Perform the analysis of the combustion products to check the boil-
er operation status then cut the electrical supply by turning off the
system's general switch
• Close the fuel and water taps of the heating and domestic hot
water system.