(
06/06
)
STEA
SERIES
Installation, Operation & Maintenance Manual
29
Controller Action
H
Humivisor Causes
Solution
H
Reset
display
Alarm
relay
Reset
relay
EF
E114 Lack of water
1. Check that the fill pipe from
the main to the humidifier and
the internal pipe are not
blocked or bent and that there
is sufficient pressure (0.1-0.8
mpa, 1-8 bar)
2. Check the operation of the
fill valve
3. Check that the steam outlet
is not working against
excessive back-pressure,
preventing the flow of water
into the cylinder by gravity
4. Check that the steam outlet
pipe is not is kinked and that
there are no sags.
Shut-
down
Automatic
when
water
returns
Active
Automatic
when
water
returns
EA
E115
Excessive foam in the
cylinder during boiling
The formation of foam is
generally due to the presence
of surfactants in the water
(lubricants, solvents,
detergents, water treatment
agents, softeners) or an
excessive concentration of
dissolved salts:
1. Drain the water supply lines
2. Clean the cylinder
3. Check for the presence of
softeners (in this case, use
another type of water or
reduce the softening)
Signal
only
Manual Active Manual
Ed
E116 Drain malfunction
Check the drain circuits and
the correct operation of the
drain valve
Shut-
down
Manual Active Manual
Ec
E131
High water
conductivity pre-alarm
Check the conductivity of the
supply water if necessary,
install a suitable treatment
system
Note: the problem will not be
resolved by softening the
supply water.
Signal
only
Auto
Not
active
-
E
-
E121
High humidity in the
room (high temp.for T
control)
Check the operation of the
probe and the limit set for
parameter P2
Signal
only
Manual Active Auto
E
-
E122
Low humidity in the
room (low temp.for T
control)
Check the operation of the
probe and the limit set for
parameter P3
Signal
only
Manual Active Auto
E
=
E124 High hi-limit humidity
Check the operation of the
outlet probe
Signal
only
Manual Active Auto