12
4.7.2
Alarms
A detailed information about active system alarms and alarm log of last 20 events.
4.7.2.1
Active Alarms
Alarm screen is empty if there are no active or logged alarms.
Press
HELP
button on the active alarm to access FAQ and troubleshooting (if available). Press
ACKNOWLEDGE
on the in-
dividual alarm to clear it. Depending on alarm type and the cause, it might be necessary to do a troubleshooting first to
acknowledge active alarm.
It may be not possible to clear the status of alarm if the cause of alarm is still present, as that would immediately trigger
alarm to return.
4.7.2.2
Alarms log
Alarm log allows to view last 20 alarms.
Each alarm contains information:
• Alarm name
• Date/time stamp
• Information if the alarm stops the unit or other note
4.7.2.3 Alarm list
Alarm name
Explanation
Do the following
Frost protection
Frost protection of return water in
heating coil.
• Alarm stops the unit and opens
the water valve completely.
The alarm will reset once the water
temperature reaches 13°C.
Check the water fluid temperature in
heating coil.
Check the circulation pump of water
heater. Contact your installation
company or place of purchase.
Frost protection temperature
sensor
Indicates malfunction of water
heater temperature sensor.
• Alarm stops the unit.
Check that frost protection
temperature sensor is connected
properly and cable is not damaged.
Contact your installation company or
place of purchase.
Defrosting error
Indicates failure of pre-heater to
preheat the incoming outdoor air (in
case Extra controller is configured as
Preheater
).
• Alarm stops the unit.
Check the pre-heater reset button.
Check the pre-heater cabling.
Contact your installation company or
place of purchase.
Defrosting error may be caused by
extremely low outdoor air
temperatures or pre-heater failure.
Supply air fan rpm
Rotation speed of the supply air fan
is lower than minimum required. Fan
malfunction.
• Alarm stops the unit.
Check quick connectors of the fan.
Contact your installation company or
place of purchase.
Extract air fan rpm
Rotation speed of the extract air fan
is lower than minimum required. Fan
malfunction.
• Alarm stops the unit.
Check quick connectors of the fan.
Contact your installation company or
place of purchase.
Supply air fan control error
Flow or pressure alarm for supply air.
The pressure is bellow pressure limit.
• Alarm stops the unit.
Check that air tube for pressure
sensor is connected properly and
cable is not damaged.
Contact your installation company or
place of purchase.
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