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Alarm list
Appendix D
The alarm text, priority and delay columns show the factory set values.
D.1
Alarm text
Prio
Malfunction supply air
B
fan
B
Malfunction extract air
fan
Filter alarm supply air
B
Filter alarm extract air
B
Fire alarm
A
Electric heating is
A
overheated
Warning freeze
B
protection
-
Defrosting alarm
Internal battery error
A
Restart blocked after
B
power on
Deviation alarm supply
B
air temp.
Freeze protection alarm A
Manual operation air
C
handling unit
Manual operation
C
supply air
Manual operation
C
supply air fan
Manual operation
C
extract air fan
Manual operation heater C
Manual operation
C
exchanger
Manual operation cooler C
Manual operation
C
damper
Manual operation pump
C
heater
Manual operation pump
C
cooler
Manual operation
C
damper outdoor air
Manual operation
C
damper exhaust air
-
Manual control
sequence A
-
Manual control
sequence B
-
Manual control
sequence C
72 (76)
Alarm list
Delay
Limit
120s
120s
180s
180s
0s
0s
0s
2s
0s
0s
30min
10 °C
0s
0s
0s
0s
0s
0s
0s
0s
0s
0s
0s
0s
0s
0s
0s
0s
Description
Malfunction supply air fan
Malfunction extract air fan
Filter alarm supply air pressure switch
Filter alarm extract air pressure switch
Fire alarm activated
Heater high temperature limit switch activated
Frost protection function is overriding the control of the heater
output
Exchanger deicing activated by deicing sensor
Internal battery needs replacing
Restart blocked due to earlier power failure
Supply air temp deviates too much from the setpoint
Frost protection temperature below frost limit value
The unit is in manual mode
Supply air temp controller in manual control
Supply air fan in manual control
Extract air fan in manual control
The heater is in manual mode
Heat exchanger output in manual control
Cooling output in manual control
Damper output in manual control
Heating circulation pump in manual control
Cooling circulation pump in manual control
Fresh air damper in manual control
Exhaust air damper in manual control
Manual control of sequence A
Manual control of sequence B
Manual control of sequence C
Optigo
Ardo
manual, Rev. A
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