Rev. 02-21 Page 41
USER MANUAL
E5
Water discharge auto-test, failed (Pre-alarm)
This alarm does not block the steam production.
However, it is necessary to eliminate the cause of
the problem before the next test, which is performed
every 10 hours of operation of the electrodes, to
avoid incurring the error E6 which instead blocks
the steam production.
The alarm is automatically reset at the next
discharge test, if no longer in progress, or when the
humidifier is switched off.
Check that the water discharge tube and the
bottom of the cylinder are not obstructed and that
the pump is not faulty or disconnected.
If this test is not considered necessary, it can be
disabled by taking the variable S10=0
automatic
E6
Water discharge auto-test failed for the second
consecutive time.
This alarm blocks steam production to prevent
damage to the appliance and cannot be silenced.
To reset the alarm, the humidifier must be switched
off.
Check that the water discharge tube and the
bottom of the cylinder are not obstructed and that
the pump is not faulty or disconnected.
If this test is not considered necessary, it can be
disabled by taking the variable S10=0
manual
E7
In a Master/slave humidifier configuration, the
Master cannot communicate with a slave
connected to it.
This alarm does not block normal operation and
when the connection is restored the alarm is
automatically reset.
Check the connections between the master and
slave units.
Check the second level parameters MS and Ad,
related to the Master/slave configuration.
automatic
In a Master/slave humidifier configuration, the
slave unit has lost communication
.
This alarm blocks the unit, but when the connection
is restored, the alarm is automatically reset.
Check the connections between the master and
slave units.
Check the second level parameters MS and Ad,
related to the Master/slave configuration.
automatic
E8
Alarm from digital input (usually safety
thermostat).
This alarm starts if one of digital inputs configured
as alarm persists for more than 5 seconds.
It blocks the steam production and activates the
acoustic signalling (it can be silenced).
The alarm is automatically reset when the alarm
input disappears.
Check the alarm input.
(usually safety thermostat)
automatic
E9
SERIOUS alarm from digital input (usually
safety thermostat).
If the E8 alarm remains continuously for a time
greater than t5, the serious alarm E9 is activated.
The E9 alarm takes over even if three E8 alarm
situations occur within 12 hours.
It blocks steam production to prevent damage to the
appliance and cannot be silenced.
Alarm E9 is disabled with t5=0.
To reset the alarm, the humidifier must be switched
off.
Check the alarm input.
(usually safety thermostat)
manual
The differential protection upstream of the
humidifier supply line has intervened.
Water present in lower part of humidifier due to a
fault or after maintenance causing unit dispersion
towards the ground.
Bring unit in safe conditions following
instructions in chapter 7.2.
Carefully dry all the wet parts and reactivate the
unit.
Humidifier produces insufficient steam.
One of the phases could be interrupted.
Check the current absorption on all phases.
Check that there is no obstruction of the steam
tube caused by a build-up of condensation.
The steam tube must not have any siphons (see
chapter 8).
