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Maintenance and service
Installer and user reference guide
41
EKVDX32~100A2VEB
VRV system air conditioner
4P664010-1 – 2021.08
Airflow rate threshold levels
Airflow rates too low imply a safety concern in case there is R32 leakage.
Therefore, when the R32 safety settings are active, three airflow rate threshold
levels are taken into account.
Level
Airflow rate
System response
Action required
1
Lower than
normal
User interface displays
error "
A6-30"
.
Auto recovery: no action
required. The error
disappears.
If not, contact your dealer
to check for a dirty air filter,
leakage in ducting, …
2
Too low
▪
User interface displays
error "
A6-29"
or
"UJ-38"
.
▪
VAM and EKVDX both
shut down.
Contact your dealer to:
▪
clean the filter.
▪
check the installation for
loose
ducting,
closed
dampers,…
▪
reset the user interface
(also possible by user).
3
Below critical
airflow
threshold
▪
User interface displays
error "
A6-28"
or
"UJ-37"
.
▪
In case there is a leak, it
will be detected but
because airflow is below
the legal limit, the system
will automatically start
refrigerant
recovery
operation to store all
refrigerant
into
the
outdoor
unit.
When
recovery is finished, the
system unit goes in
locked status. Service is
needed to repair and re-
activate
the
system.
Refer to the service
manual
for
more
information.
Contact your dealer to
repair and re-activate the
system. Refer to the service
manual for more
information.