23
ENGLISH
Boiler faults list
ERROR
CODE
ERROR MESSAGE
RED LED
GREEN LED
RED and GREEN
DESCRIPTION OF TYPE
OF ALARM
E010
flame lockout/ACF electronic fault
ON
definitive
E011
extraneous flame
flashing
0.2 sec. on/0.2 off
transitional
E020
limit thermostat
flashing
0.5 sec. on/0.5 off
definitive
E030
fan fault
ON
definitive
E040
water transducer – load system
ON
definitive
E041
water transducer - press OK to fill the system
flashing
0.5 sec. on/0.5 off
transitional
E042
water pressure transducer fault
ON
definitive
E060
domestic hot water probe fault
flashing
0.5 sec. on/0.5 off
transitional
E070
fault flow sensor/overtemperature flow sensor
flow/return sensor differential alarm
ON
transitional/definitive
definitive
E077
main zone water thermostat
ON
transitional
E080
fault return line probe/return line probe overtemperature/
outlet/return line probe differential alarm
ON
transitional/
definitive
/
definitive
E090
fault flue gases probe
flue gases overtemperature probe
flashing
0.5 sec. on/0.5 off
transitional
definitive
E091
clean primary heat exchanger
flashing
0.5 sec. on/0.5 off
transitional
--
water pressure low press OK to charge
flashing
0.5 sec. on/0.5 off
transitional
--
water pressure high check system
flashing
0.5 sec. on/0.5 off
transitional
--
boiler board communication lost
ON
transitional
--
BUS 485 communication lost
ON
transitional
List of combustion faults
ERROR
CODE
ERROR MESSAGE
LED
RED
LED
GREEN
DESCRIPTION OF TYPE OF ALARM
E021
iono alarm
ON
These are temporary alarms that if they occur 6 times in an hour they
become definitive; 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 alarm before the end of the post-purging
unless the boiler’s power supply is switched off.
E022
iono alarm
ON
E023
iono alarm
ON
E024
iono alarm
ON
E067
iono alarm
ON
E088
iono alarm
ON
E097
iono alarm
ON
E085
incomplete combustion
ON
These are temporary alarms that if they occur 3 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
incomplete combustion
ON
E095
incomplete combustion
ON
E058
mains voltage fault
ON
These are temporary faults that restrict the ignition cycle.
E065
current modulation alarm
ON
E086
obstruction fumes alarm
ON
Temporary fault reported during the post ventilation. It is maintained a post
ventilation of 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 heater
flashing
1 sec. on/1 sec. off
flashing
1 sec. on/1 sec. off
The red and green LEDs come on alternately
Semi-automatic filling in progress
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
Semi-automatic filling finished
ON
The red and green LEDs are on and fixed and at the same
time for about 4 sec
