Komfovent C4.1 Elektrische Installation Und Bedienungsanleitung Seite 24

EN
Table 2.6. Alarms indicated on the control panel, their possible causes and elimination methods
Message
14B
Service time
19A
Low supply air temperature
20A
Supply air overheating
13B
Heater off
4A
Electric heater overheating
27A
Return water low tempera-
ture
28A
Frost possibility
3A
Rotor stopping
11B
Rotor stopping
9A
B1 sensor failure
24
Protection tripping
description
Depending on the intensity
of unit operation, at a certain
time a periodic inspection
message appears on the con-
trol panel.
If the supply air temperature
falls below the permitted value:
+5 °C, unit will stop operating
with 10 min. delay.
If the supply air temperature
is above the permitted value:
+45 °C, unit will stop operating
with 10 min. delay.
Unit with electric heater has
protection from overheating at
70 °C, which can be activated
if the heater blow-cooling is
insufficient. Unit operation is
not terminated.
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 terminated.
In the unit with water heater,
when the water temperature
falls below the permitted value
of +10°C, the unit will stop op-
erating.
In the unit with plate heat ex-
changer, if the freezing protec-
tion of the heat exchanger is
activated and is not restored,
the unit will stop operating.
When there is no signal from
the rotor's rotation sensor, if
the "Winter" season is set,
the unit will stop operating in
2 min.
When there is no signal from
the rotor's rotation sensor, if
the "Summer" season is set,
the warning message appears
in 2 min. on the control panel.
The unit operation is not ter-
minated.
When temperature exceeds
the maximum permitted limits:
-30 °C...+75 °C, the unit stops
operating immediately.
UAB AMALVA we reserve the right to make changes without prior notice
Possible Failure Cause
–
Malfunction of the heat
exchanger and/or heater.
Malfunction of the heat
exchanger and/or heater.
Heater is disconnected due to
low air flow.
Electric heater overheating
protection is on.
Failure of the hot water prepa-
ration and supply function in
the heating system.
Temperature of the air passing
through plate heat exchanger,
dropped lower allowable level.
The belt is broken, failure of
the rotor motor or rotor sensor.
The belt is broken, failure of
the rotor motor or rotor sensor.
Supply air temperature sen-
sor is not connected or broken
down.
Failure Elimination
After disconnecting the unit
from power supply, it is nec-
essary 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.
Check temperature and sea-
son settings. Check the heat
exchanger and heater opera-
tion.
Check temperature and season
settings. Check the heat ex-
changer and heater operation.
When heater cools down, pro-
tection restores automatically.
It is recommended to increase
ventilation intensity level.
It is possible to restore emer-
gency overheating protection
with button "RESET" (located
on the heater), only if before
heater overheating cause has
been clarified and eliminated.
Check circulation pump and
heating system condition,
heating valve actuator perfor-
mance.
Check by-pass damper con-
dition and actuator perfor-
mance. It is recommended to
decrease ventilation level.
Check rotor drive and rotation
sensor condition.
Check rotor drive and rotation
sensor condition.
It is necessary to check sen-
sor connections or change the
sensor.
C4.1-16-01-v1