11
Boiler faults list
ERROR
CODE
ERROR MESSAGE
DESCRIPTION OF TYPE
OF ALARM
E010
flame lockout/ACF electronic fault
definitive
E011
parasitic flame
transitional
E020
water high limit/thermal fuse
definitive
E030
fan fault
definitive
E040
low water cutoff - check system water pressure
definitive
E041
low water cutoff - check system water pressure
transitional
E042
low water cutoff fault
definitive
E060
domestic hot water sensor fault
transitional
E070
supply sensor fault
high limit supply sensor
supply/return sensor differential error
transitional
definitive
definitive
E077
external error contact
transitional
E080
fault return line sensor
return line sensor high limit
supply/return line sensor differential error
transitional
definitive
definitive
E090
fault flue gases sensor
flue gases high limit sensor
transitional
definitive
E091
clean primary heat exchanger
transitional
WAIT
COMM.
wait communication from the boiler board
transitional
COMM.
LOST
lost communication from the boiler board
transitional
List of combustion faults
ERROR
CODE
ERROR MESSAGE
DESCRIPTION OF TYPE OF ALARM
E021
iono alarm
These are temporary errors that if they occur 6 times in an hour they become a hard
lock-out; the alarm E097 is displayed and is followed by post-purging for 45 seconds
at the fan’s maximum speed.
It is not possible to release the error before the end of the post-purging unless the
boiler’s power supply is switched off.
E022
iono alarm
E023
iono alarm
E024
iono alarm
E067
iono alarm
E088
iono alarm
E097
iono alarm
E085
incomplete combustion
These are temporary errors that if they occur 3 times in an hour they become a hard
lock-out; the last error to occur is displayed and is followed by a post-purging of 5
minutes at the fan’s maximum speed.
It is not possible to release the error before the
end of the post-purging unless the boiler’s power supply is switched off.
E094
incomplete combustion
E095
incomplete combustion
E058
supply voltage fault
These are temporary faults that restrict the ignition cycle.
E065
current modulation error
E086
obstruction fumes error
Temporary fault reported during the post ventilation. It is maintained a post ventilation
of 5 min at maximum fan speed.
RESET
MENU
E020
OK
MODE
RESET
MENU
CONF.
OK
MODE
9
WARNING:
If in the “Start-up Phase” and the sliding message
““WAIT COMM.” persists, contact a qualified service agency.
9
NOTICE:
If communication between SC07 front control and
boiler is lost, “COMM.LOST” appears on the display: contact a
qualified service agency.
9
DANGER:
The boiler should only be serviced by a qualified technician, service agency, or gas utility. Attempting to repair the
boiler yourself may result in severe personal injury, death or substantial property damage.
