6 Disposal
Installation manual
14
3(A)MXM+3(A)MXF+4MXM+5MXM
R32 Split series
3P600450-1C – 2020.05
A
1
2
3
4
5
SW3
2
1×
1
2
Press 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.
▪ 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).
5.3.2
To perform a test run
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.
▪ Operate only air conditioner during test run. Do NOT
operate the Hybrid for Multi or the DHW generator
during test run.
▪ 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.
5.4
Starting up the outdoor unit
See the indoor unit installation manual for configuration and
commissioning of the system.
6
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.
6.1
To pump down
NOTICE
For the Hybrid for Multi, all required precautions must be
taken to avoid possible freezing damage at the water heat
exchanger before this function is allowed to be used or
activated. For detailed information see the indoor
installation manual.
Example:
To protect the environment, pump down when relocating
the unit or when disposing of the unit.
DANGER: RISK OF EXPLOSION
Pump down – Refrigerant leakage.
If you want to pump
down the system, and there is a leak in the refrigerant
circuit:
▪ Do NOT use the unit's automatic pump down function,
with which you can collect all refrigerant from the
system into the outdoor unit.
Possible consequence:
Self-combustion and explosion of the compressor
because of air going into the operating compressor.
▪ Use a separate recovery system so that the unit's
compressor does NOT have to operate.
NOTICE
During pump down operation, stop the compressor before
removing the refrigerant piping. If the compressor is still
running and the stop valve is open during pump down, air
will be sucked into the system. Compressor breakdown or
damage to the system can result due to abnormal pressure
in the refrigerant cycle.
