Riello Family PRO 42 IS, Installation & Operating Instructions For Contractors

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List of combustion faults
ERROR
CODE
DISPLAYED
COLOUR
ERROR MESSAGE ERROR TYPE DESCRIPTION OF ERROR TYPE
E021 red iono error temporary
These are temporary errors that if they occur
several times in an hour they become a hard
lockout; the error 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 red iono error temporary
E023 red iono error temporary
E024 red iono error temporary
E067 red iono error temporary
E088 red iono error temporary
E097 red iono error final
E085 red ACC monitor error
temporary
➞
final (see condition in
the beside column)
These are temporary errors 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 reset the error before the
end of the post-purging unless the boiler’s
power supply is switched off.
E094 red
ACC monitor error
temporary
➞
final (see condition in
the beside column)
E095 red ACC monitor error
temporary ➞ final (see condition in
the beside column)
E058 red supply voltage fault temporary
These are temporary faults that restrict the ig-
nition cycle.
E065 red error modulation current temporary
E086 red error flue obstruction temporary
Temporary fault reported during the post ven-
tilation. It is maintained a post ventilation of 5
min at maximum fan speed.
Boiler faults list
ERROR
CODE
DISPLAYED
COLOUR
ERROR TYPE DESCRIPTION OF ERROR TYPE
E010
yellow
final flame lockout/ACF electronic fault
E011
yellow
temporary parasitic flame
E020
red
final water high limit/heat exchanger thermostat
E030
red
final fan fault
E040
yellow
final low water cutoff - check system water pressure
E041
yellow
temporary low water cutoff - check system water pressure
E042
yellow
final low water cutoff fault
E060
yellow
temporary
domestic hot water sensor fault (combi model)/indirect tank sensor fault
(heating only model)
E070 yellow
temporary/
final
final
fault supply sensor/
high limit supply sensor
supply/return sensor differential error
E077
red
temporary external error contact
E080 yellow
temporary/
final/
final
fault return line sensor/
return line sensor high limit/
outlet/return line sensor differential error
E090 red
temporary
final
fault flue gas sensor/air pressure switch
flue high limit sensor
E091
yellow
temporary need for periodic maintenance
E099 red final, not resettable reset attempts exhausted, boiler blocked
red
temporary water pressure high check system
red
temporary boiler board communication lost
red
temporary BUS 485 communication lost
Final= boiler BLOCK, manual reset needed
Transitional= the boiler automatically restores the alarm without any external intervention.