12 Disposal
Installation manual
16
4MWXM-A9
R32 Split series
3P600450-7T – 2022.09
1×
1
A
1
2
3
4
5
SW3
2
2
Press shortly the wiring error check switch (SW3) on the
outdoor unit service PCB.
Result:
The service monitor LEDs indicate whether correction
is possible or not. For details about how to read the LED
display, refer to the service manual.
Result:
Wiring errors will be corrected after 15-20 minutes. If
automatic correction is not possible, check the indoor unit wiring and
piping in the usual way.
INFORMATION
▪ The number of LEDs displayed depends on the number
of rooms.
▪ The wiring error check function will NOT work if outside
temperature is ≤5°C and if water temperature in DHW
tank is ≥20°C.
▪ After wiring error check operation is completed, LED
indication will continue until normal operation starts.
▪ Follow the product diagnosis procedures. For details of
product error diagnosis refer to service manual.
Status of LEDs:
▪ All LEDs flash: automatic correction is NOT possible.
▪ LEDs flash alternately: automatic correction is completed.
▪ One or more LEDs are permanently on: abnormal stop (follow the
diagnosis procedure on the back of the right side plate and refer to
service manual).
11.3.2
To perform a test run
INFORMATION
For DHW tank test run procedure, refer to installation
manual of DHW tank unit.
INFORMATION
If the unit runs into an error during commissioning, see the
service manual for the detailed troubleshooting guidelines.
Prerequisite:
Power supply MUST be in the specified range.
Prerequisite:
Test run operation may be done in cooling or heating
mode.
Prerequisite:
Test run should be done in accordance with the
operation manual of the indoor unit to make sure that all functions
and parts are working properly.
1
In cooling mode, select the lowest programmable temperature.
In heating mode, select the highest programmable temperature.
2
Measure the temperature at the indoor unit inlet and outlet after
running the unit for about 20 minutes. The difference should be
more than 8°C (cooling) or 20°C (heating).
3
First check operation of each unit individually, then check
simultaneous operation of all indoor units. Check both heating
and cooling operation.
4
When test run is finished, set the temperature to a normal level.
In cooling mode: 26~28°C, in heating mode: 20~24°C.
INFORMATION
▪ Test run can be disabled if necessary.
▪ After the unit is turned OFF, it cannot be started again
for 3 minutes.
▪ When the test run is started in the heat mode right after
turning the safety breaker on, in some cases no air will
be output for about 15 minutes in order to protect the
unit.
▪ During cooling operation, frost may form on the gas
stop valve or other parts. This is normal.
INFORMATION
▪ Even if the unit is turned OFF, it consumes electricity.
▪ When the power turns back on after a power break, the
previously selected mode will be resumed.
11.4
Starting up the outdoor unit
See the indoor unit installation manual for configuration and
commissioning of the system.
12
Disposal
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.
INFORMATION
To protect the environment, make sure to perform an
automatic pump down operation when relocating or
dismantling the unit. For the pump down procedure, refer
to the service manual or the installer reference guide.
13
Technical data
▪ A
subset
of the latest technical data is available on the regional
Daikin website (publicly accessible).
▪ The
full set
of latest technical data is available on the Daikin
Business Portal (authentication required).
13.1
Wiring diagram
The wiring diagram is delivered with the unit, located inside of
the outdoor unit (bottom side of the top plate).
13.1.1
Unified wiring diagram legend
For applied parts and numbering, refer to the wiring diagram on the
unit. Part numbering is by Arabic numbers in ascending order for
each part and is represented in the overview below by "*" in the part
code.
