15 Configuration
Installation and operation manual
21
FXSN50~112A2VEB
CO
₂
Conveni-Pack: indoor unit
4P602815-1C – 2020.05
The
power supply voltage
matches the voltage on the
identification label of the unit.
There are NO
loose connections
or damaged electrical
components in the switch box.
There are NO
damaged components
or
squeezed
pipes
on the inside of the indoor and outdoor units.
The
stop valves
(gas and liquid) on the outdoor unit are
fully open.
14.2
To perform a test run
INFORMATION
Test run is carried out on the outdoor unit side. For the test
run procedure, see the reference guide of the outdoor unit.
If necessary, also see the reference guide of the user
interface.
NOTICE
Do NOT interrupt the test run.
14.3
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:
INFORMATION
To display error codes, refer to the reference guide of the
user interface.
Error code
Possible cause
Nothing displayed
(the currently set
temperature is not
displayed)
▪ The wiring is disconnected or there is a
wiring error (between power supply and
outdoor unit, between outdoor unit and
indoor units, between indoor unit and
user interface).
▪ The fuse on the outdoor or indoor unit
PCB has blown.
E3, E4
▪ The stop valves are closed.
▪ The air inlet or air outlet is blocked.
EF
Abnormality of the refrigeration capacity
booster (Qup) unit.
F4
Defective expansion valve control
refrigerator
L4
The air inlet or air outlet is blocked.
U4 or UF
The inter-unit branch wiring is not correct.
UA
The outdoor and indoor unit are
incompatible.
15
Configuration
15.1
Field setting
Make the following field settings so that they correspond with the
actual installation setup and with the needs of the user:
▪ Bottom suction or rear suction installation setting
▪ External static pressure setting using:
▪ Automatic airflow adjustment setting
▪ User interface
▪ Time to clean air filter
▪ Function for refrigerant leak detection
To set bottom suction or rear suction installation
If you have an installation
with…
Then
(1)
M
SW/C1
—/C2
Rear suction
13(23)
11
01
Bottom suction
02
To set automatic airflow adjustment
The automatic airflow adjustment function measures the air volume
and static pressure and adjusts it towards the nominal air flow,
whatever the length of duct.
▪ When the air conditioning unit is running in fan operation mode:
1
Stop the air conditioning unit.
2
Set —/C2 to 03.
Setting content:
Then
(1)
M
SW/
C1
—/
C2
Airflow adjustment is OFF
11(21)
7
01
Press ON/OFF to return to normal operating
mode.
Possible consequence:
The user interface
operation lamp will light up and the unit will
start the fan operation for automatic airflow
adjustment.
03
Operation stops after 1 to 8 minutes.
Possible consequence:
Setting is finished
and the user interface operation lamp will be
off.
02
If there is no change after airflow adjustment, perform the setting
again.
INFORMATION
▪ The fan speed of the indoor unit is preset to ensure the
standard external static pressure.
▪ To set a higher or lower external static pressure, reset
the initial setting with the user interface.
User interface
Check the indoor unit setting:—/C2 of mode 11(21) must be set to
01.
Change—/C2 according to the external static pressure of the duct to
be connected as in the table below.
(1)
Field settings are defined as follows:
•
M
: Mode number –
First number
: for group of units –
Number between brackets
: for individual unit
•
SW
: Setting number /
C1
: First code number
• —: Value number /
C2
: Second code number
•
: Default
