Airwell Airflow 2020, Installation And Operating Manual

Page: 35 / 80

35
8 - CONTROL
ALARMS
Alarm Description Possible cause
E21 Outlet low temp. signaling the temperature of the air supplied in the room is too low;
-
the air is not compatible with the unit's operating limits
-
insufficient supply air flow rate in ambient
-
filters air dirty
-
obstacles air distribution system
-
supply fan fault
A
E22 Outlet 2 low temp. signaling the temperature of the air supplied in the room is too low;
-
the air is not compatible with the unit's operating limits
-
insufficient supply air flow rate in ambient
-
filters air dirty
-
obstacles air distribution system
-
supply fan fault
A / M
C23 Clogged filter signal filters that need to be cleaned A
E25 Ventilation block due to external low air
temperature
The external air is not compatible with the unit's operating limits and the
compressor cannot operate. Introducing air that is too cold with the
compressor off would mean cooling the room, something that should be
avoided.
The only solution is to wait for the outside environment to become warmer
A
E26 Ventilation block due to external high
temperature air
The external air is not compatible with the unit's operating limits and the
compressor cannot operate. Introducing air that is too warm with the
compressor off would mean warming up the room, something that should be
avoided.
The only solution is to wait for the outside environment to become cooler
A
E27 Ventilation block due to ambient low temperature The air inside the house is not compatible with the unit's operating limits.
This might mean that there is no main heating system or that it is not running.
This is an air renewal unit with heat recovery and not a heating device: wait for
the room to reach the right temperature and then turn on the unit
A
E28 Ventilation block due to ambient high
temperature
The air inside the house is not compatible with the unit's operating limits.
This might mean that there is no main air-conditioning system or that it is not
running.
This is an air renewal unit with heat recovery and not an air-conditioning
device: wait for the room to reach the right temperature and then turn on the
unit
A
E29 Unit configuration error internal anomaly A
E31 Alarm of max supply temperature limit the temperature of the air supplied in the room is too high;
poor air flow rate due to dirty air filters or features of the system
M
E33 Recovery compressor lockout for low
temperature ambient (heat mode)
The air inside the house is not compatible with the unit's operating limits.
This might mean that there is no main heating system or that it is not running.
This is an air renewal unit with heat recovery and not a heating device: wait for
the room to reach the right temperature and then turn on the unit
A
E34 Recovery compressor lockout for high ambient
air temperature (cool mode)
The air inside the house is not compatible with the unit's operating limits.
This might mean that there is no main air-conditioning system or that it is not
running.
This is an air renewal unit with heat recovery and not an air-conditioning
device: wait for the room to reach the right temperature and then turn on the
unit
A
C35 Humidifier on in antifreeze protection see E04 A
C/E36 Pressure transducer fault Check wiring and values detected by the transducer.
Potential transducer failure, replace it
A
C37 Fans off for fresh air temperature in Ventilation
Only mode
The unit is set to operate in ventilation-only mode (no active compressor), but
the external air is too warm / cold (depending on the mode).
Wait until the external air reaches again a temperature suitable for the unit's
operation
A