24
UAB AMALVA we reserve the right to make changes without prior notice
EN
C4-16-01-v1
2.8 T
able
Fai
lu
re
s i
ndic
at
ed
on
th
e c
on
tr
ol
p
an
el,
p
os
sib
le
rea
son
s a
nd
it
el
im
ina
tion
Message
LED
Protection tripping description
Possible Failure Cause
Failure Elimination
Red and green
blinking
Depending
on
the
intensity
of
unit
operation,
at
a
cer
-
tain
time
a
periodic
inspection
message
appears
on
the control panel.
–
After
disconnecting
the
unit
from
power
supply
,
it
is
necessary
to
carry
out
periodic
inspection
of
the
unit,
i.e.
to
check
the
air
filter
clogging
and
the
condition
of
the
heat
exchanger
,
the
heater
and
fans.
Red light
If
the
supply
air
temperature
falls
below
the
permitted
value: +5 °C, unit will stop operating with 10 min. delay
.
Malfunction
of
the
heat
exchanger and/or heater
.
Check
temperature
and
season
settings.
Check
the heat exchanger and heater operation.
Red light
If
the
supply
air
temperature
is
above
the
permitted
value:
+45
°C,
unit
will
stop
operating
with
10
min.
delay
.
Malfunction
of
the
heat
exchanger and/or heater
.
Check
temperature
and
season
settings.
Check
the
heat exchanger and heater operation.
Red and green
blinking
Unit
with
electric
heater
has
protection
from
over
-
heating
at
70
°C,
which
can
be
activated
if
the
heater
blow-cooling
is
insufficient.
Unit
operation
is
not
ter
-
minated.
Heater
is
disconnected
due
to
low air flow
.
When
heater
cools
down,
protection
restores
au
-
tomatically
. It
is
recommended
to
increase
ventila
-
tion intensity level.
Red light
Unit
with
electric
heater
has
emergency
protection
from
overheating
at
100
°C,
which
can
be
activated
in
case
of
the
heater
failure.
Unit
operation
is
termi
-
nated.
Electric
heater
overhe
ating
protection is on.
It
is
possibl
e
to
restore
emergency
overheating
protection
with
button
“RESET”
(located
on
the
heater),
only
if
before
heater
overheating
cause
has been clarified and eliminated.
Red light
In
the
unit
with
water
heater
,
when
the
water
tem
-
perature
falls
below
the
permitted
value
of
+10°C,
the
unit will stop operating.
Failure
of
the
hot
water
prep
-
aration
and
supply
function
in
the heating system.
Check
circulation
pump
and
heating
system
con
-
dition, heating valve actuator perfor-mance.
Red light
In
the
unit
with
plate
heat
exchanger
, if
the
freezing
protection
of
the
heat
exchanger
is
activated
and
is
not restored, the unit will stop operating.
Temperature
of
the
air
pass
-
ing
through
plate
heat
ex
-
changer
,
dropped
lowe
r
al
-
lowable level.
Check
by-pass
damper
condition
and
actuator
performance.
It
is
recommended
to
decrease
ven
-
tilation level.
Red light
When
there
is
no
signal
from
the
rotor
’s
rotation
sen
-
sor
,
if
the
“Winter”
season
is
set,
the
unit
will
stop
operating in 2 min.
The
belt
is
broken,
failure
of
the
rotor
motor
or
rotor
sen
-
sor
.
Check rotor drive and rotation sensor condition.
Red and green
blinking
When
there
is
no
signal
from
the
rotor
’s
rotation
sen
-
sor
, if
the
“Summer”
season
is
set,
the
warning
mes
-
sage
appear
s
in
2
min.
on
the
control
panel.
The
unit
operation is not terminated.
The
belt
is
broken,
failure
of
the
rotor
motor
or
rotor
sen
-
sor
.
Check rotor drive and rotation sensor condition.
Red light
When
temperature
exceeds
the
maximum
permitted
limits:
-30
°C...+75
°C,
the
unit
stops
operating
im
-
mediately
.
Supply
air
temperature
sen
-
sor
is
not
connected
or
bro
-
ken down.
It
is
necessary
to
check
sensor
connections
or
change the sensor
.
Содержание C4
Страница 2: ......
