EN
Swegon reserves the right to alter specifications.
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98
3. Alarms and Troubleshooting
3.1. Alarm
Any disruptions to the function of the ventila-
tion unit are indicated by symbols on the
upper row of the base display. If there is an
active alarm in the system, the screen leaves
its standby mode and returns to full bright-
ness and does not enter standby mode again
as long as the alarm is active. The symbol for
an active alarm is . The condition that has
caused the alarm is shown by the “Alarm”
item on the main menu. A so-called info-
alarm , remains on the screen when the
active fault condition ceases. The Info alarm
can be reset from “Alarm” on the main menu.
Status Alarm
Action
T1...T8 sensor fault
Contact a service company. The ventilation unit runs in a
restricted operating mode.
Reheater error
Check the overheating protection. Contact a service company.
Preheater error
Check the overheating protection. Contact a service company.
Freeze risk water-
heated air heater
Ensure that the circulation pump in the waterborne heating
system is running and that the water supply to the ventilation
unit’s heating coil is hot enough.
Fault supply air fan
Contact a service company.
Fault extract air fan
Contact a service company.
Contact fault
Restart the ventilation unit. Contact the service company if the
error persists.
External emergency
stop/fire alarm
The alarm clears automatically when the external emer-
gency stop or the fire alarm ceases. No info alarm remains
afterwards.
Internal fault
Restart the ventilation unit. Contact the service company if the er-
ror persists. The ventilation unit runs in a restricted operating mode.
Service reminder
Service the ventilation unit and acknowledge the service reminder.
Filter guard
Replace the filter and reset the filter guard.
3.2 Troubleshooting
A ventilation system is a unified whole
composed of several system components all
of which influence how the system operates.
A malfunction in ventilation performance
could be caused by any component of the
ventilation system or by the way the system
has been installed. If you suspect the ventila-
tion unit is malfunctioning, go through the
troubleshooting section on our website (www.
swegonhomesolutions.com). If the ventilation
unit is still impaired by malfunctions after the
checks, contact our product support group.
We will then solve the problem quickly.
Summary of Contents for CASA R5 Smart
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