Swegon CASA R120, Инструкции по установке, эксплуатации и техническому обслуживанию

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5.1 Alarms
5.1.1 Alarms from a Premium control panel
• The indicating lamp is flashing red: The automated
protection system has stopped the fans due to a
malfunction� The alarm text is shown in the display�
Remedy the malfunction�
• The indicating lamp is lit with a steady red glow:
Alarm or a service reminder� The alarm text is shown
in the display� Remedy the malfunction or perform
service on the ventilation unit�
• The indicating lamp indicates certain unit functions
with other colours� See Section ”3�2 Premium control
panel”
5.2 Troubleshooting:
Eventual malfunctions are shown by alarm texts in ac-
cordance with 5�1�1� Investigate the components related
to the malfunction and remedy the malfunction�
5.2.1 The supply air is not sufficiently heated
Low temperature setting for the supply air
Investigate and, if needed, increase the temperature
from the menu�
The electric air heater is faulty (optional equip-
ment)
The air heater has one excess temperature and one
overheating protection functions� The alarm is initiated
in accordance with Section 5�1�1� if either of these are
activated�
The over temperature protection resets itself automati-
cally when the temperature decreases� The overheating
protection must be reset by pressing a push button on
the air heater� If you hear a click when you press in the
button, this indicates that the overheating protection
has been reset�
Excessively high temperature may be due to too low an
air flow through the air heater� The cause can be that
a filter, outer wall grille or supply air device is clogged�
Replace and clean, if needed�
Tip: In most models, the outer wall grill has an insekt
net� If the net has small mesh, dust and insects can clog
it� During certain conditions it it is also liable to freeze�
Remove the net or replace it with a net with larger
mesh�
An excessively high temperature can also be due to the
supply air fan having stopped or that the temperature
sensor has been shaken loose from its position in the
fan intake�
Badly isolated ventilation ducts
If the unit emits warm air but the supply air discharged
from the air diffuser feels cold, this may be due to
poorly insulated ventilation duct�
The ventilation unit does not obey commands
If two overlapping commands are issued, the unit obeys
5. Alarms and troubleshooting
Freeze protection
During periods of cold weather, the heat
exchanger is liable to freeze if the extract
air is humid. A protective function then
automatically reduces the speed of the
supply air fan. Under such conditions,
variations in the fan speed are therefore
normal.
The LED on a Premium control panel
flashes green when the freeze protection
is activated.
the command with the highest priority, e�g� the freeze
protection�
Priority 1: Commands from outer sensor or the ventila-
tion unit’s protective functions�
Priority 2: External supervision (DDC)�
Priority 3: A normal control panel or the operation of
the cooker hood�
R120.211112
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