21
ENGLISH
Boiler faults list
ERROR
CODE
FAULT
RED
LED
GREEN
LED
RED & GREEN
LED
DESCRIPTION OF ALARM
TYPE
E010
flame lockout/ACF electronic fault
ON
definitive
E011
extraneous flame
flashing 0,2 sec. ON/
0,2 sec. OFF
transitional
E020
limit thermostat
flashing 0,5 sec. ON/
0,5 sec. OFF
definitive
E030
fan fault
ON
definitive
E040
water transducer – load system
ON
definitive
E041
water transducer – load system
flashing 0,5 sec. ON/
0,5 sec. OFF
transitional
E042
water pressure transducer fault
ON
definitive
E060
domestic hot water probe fault
flashing 0,5 sec. ON/
0,5 sec. OFF
transitional
E070
flow sensor fault
flow sensor overtemperature
flow/return sensor differential alarm
ON
transitional
definitive
definitive
E077
water thermostat main zone or zone 1 (when enabled)
ON
transitional
E080
return line probe fault
return line probe overtemperature
outlet/return line probe differential alarm
ON
transitional
definitive
definitive
E084
delivery line probe fault - zone 1
flashing 0,5 sec. ON/
3 sec. OFF
transitional
E086
delivery line probe fault - main zone
flashing 0,5 sec. ON/
3 sec. OFF
transitional
E090
flue gas probe fault
flue gas probe overtemperature
flashing 0,5 sec. ON/
0,5 sec. OFF
transitional
definitive
E091
clean primary heat exchanger
flashing 0,5 sec. ON/
0,5 sec. OFF
transitional
E099
reset attempts exhausted, boiler blocked
It is referred to the last fault occurred
definitive, not resettable
<0,6 bar
low pressure - check the system
flashing 0,5 sec. ON/
0,5 sec. OFF
signalisation
>3,0 bar
high pressure - check the system
flashing 0,5 sec. ON/
0,5 sec. OFF
signalisation
COM
lost communication with boiler board
ON
transitional
COMP
lost communication with main zone
flashing 0,5 sec. ON/
3 sec. OFF
transitional
COM1
lost communication with zone 1
flashing 0,5 sec. ON/
3 sec. OFF
transitional
FWER
FW version not compatible
flashing 0,5 sec. ON/
3 sec. OFF
definitive
OBCD
damaged clock
flashing 0,5 sec. ON/
0,5 sec. OFF
signalisation
OTER
OTBus configuration fault
flashing 0,5 sec. ON/
3 sec. OFF
List of combustion faults
ERROR
CODE
RED LED
GREEN LED
FAULT
DESCRIPTION OF ALARM TYPE
E021
ON
ion alarm
These are temporary alarms that if they occur 6 times in an hour they become definitive; the E097 alarm is displayed and
is followed by post-purging for 45 seconds at the fan's maximum speed.
It is not possible to release the alarm before the end of the post-purging unless the boiler's power supply is switched off.
E022
ON
ion alarm
E023
ON
ion alarm
E024
ON
ion alarm
E067
ON
ion alarm
E088
ON
ion alarm
E097
ON
ion alarm
E085
ON
incomplete combustion
These are temporary alarms that if they occur several times in an hour they become definitive; 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 alarm before the end of the post-purging unless the boiler's power supply is switched off.
E094
ON
incomplete combustion
E095
ON
incomplete combustion
E058
ON
mains voltage fault
These are temporary faults that restrict the ignition cycle.
E065
ON
current modulation alarm
E086
ON
flue gases obstruction alarm
Temporary fault signalled during pre-purging. Post-purging is maintained for 5 min at maximum fan speed.
Warning lights
BOILER STATUS
RED LED
GREEN LED
RED and GREEN
NOTES
Power-on
flashing 0.5 sec. on/0.5 sec. off
The red and green LEDs come on at the same time
Vent cycle
flashing 0.5 sec. on/1 sec. off
flashing 0.5 sec. on/1 sec. off
The red and green LEDs come sequentially one at a time
OFF status
flashing 0.3 sec. on/0.5 sec. off
No heat request (stby)
flashing 0.3 sec. on/0.5 sec. off
Transitional ignition/
overtemperature
flashing 0.3 sec. on/0.5 sec. off
Presence of flame
ON
Chimney sweep
ON
Only if the flame is present
Screed heating
flashing 1 sec. on/1 sec. off
flashing 1 sec. on/1 sec. off
The red and green LEDs come on alternately
