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#
Action
2
Press at least 4 seconds.
3
Select Test Operation.
4
Press.
5
Press within 10 seconds.
3 Check operation for 3 minutes.
4 Check operation of the airflow direction (only applicable for
indoor units with swing flaps).
#
Action
1
Press.
2
Select Position 0.
3
Change the position.
4
Press.
5 Stop the test run.
#
Action
1
Press at least 4 seconds.
2
Select Test Operation.
3
Press.
Result
The Service Settings menu
is displayed.
Service Settings
Test Operation
Maintenance Contact
Field Settings
Demand
Min Setpoints Differential
Group Address
Return
Setting
Test Operation is
displayed on the home
menu.
Cool
T
est Operation
Return
Setting
Test run starts.
Result
Air Volume/direction
Air Volume
Direction
Low
Position 0
Return
Return
Setting
Setting
Air Volume/direction
Air Volume
Direction
Low
Position 0
Return
Return
Setting
Setting
If the airflow flap of the
indoor unit moves,
operation is OK.
If not, operation is not OK.
The home menu is
displayed.
Result
The Service Settings menu
is displayed.
Service Settings
Test Operation
Maintenance Contact
Field Settings
Demand
Min Setpoints Differential
Group Address
Return
Setting
The unit returns to normal
operation, and the home
menu is displayed.
31
5.3
Error codes when performing a
test run
If the installation of the outdoor unit has NOT been done correctly,
the following error codes may be displayed on the user interface:
Error code
Nothing displayed
▪ The wiring is disconnected or there is a
wiring error (between power supply and
(the currently set
outdoor unit, between outdoor unit and
temperature is not
indoor units, between indoor unit and
displayed)
user interface).
▪ The fuse on the outdoor unit PCB has
blown out.
E3, E4 or L8
▪ The stop valves are closed.
▪ The air inlet or air outlet is blocked.
U1 or E7
There is a missing phase in case of three-
phase power supply units.
Note: Operation will be impossible. Turn
OFF the power, recheck the wiring, and
switch two of the three electrical wires.
L4
The air inlet or air outlet is blocked.
U0
The stop valves are closed.
U2
▪ There is a voltage imbalance.
▪ There is a missing phase in case of
three-phase power supply units. Note:
Operation will be impossible. Turn OFF
the power, recheck the wiring, and switch
two of the three electrical wires.
U4 or UF
The inter-unit branch wiring is not correct.
UA
The outdoor and indoor unit are
incompatible.
6
Disposal
This unit uses hydrofluorocarbon. Contact your dealer when
discarding this unit.
NOTICE
Do NOT try to dismantle the system yourself: dismantling
of the system, treatment of the refrigerant, oil and other
parts MUST comply with applicable legislation. Units
MUST be treated at a specialised treatment facility for
reuse, recycling and recovery.
Possible cause
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