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RXYSQ4~Y1B
VRVIII-S System air conditioner
4PW68122-1 – 02.2011
Installation manual
25
11.5. Checks in normal operation
(only for VRV indoor
units)
Set the master unit (= indoor unit having the right to select the
cooling/heating operation mode).
In case of wired remote controllers
■
After the check operation, "CHANGEOVER UNDER CONTROL"
is blinking in all connected remote controllers.
■
Select an indoor unit to be used as the master unit in
accordance with the request from the customer.
(It is recommended to select an indoor unit which will be used
most often as the master unit.)
■
Press the operation mode selector button in the remote
controller of the indoor unit selected as the master unit.
■
In that remote controller, "CHANGEOVER UNDER CONTROL"
disappears. That remote controller will control changeover of the
cooling/heating operation mode.
■
In other remote controllers, "CHANGEOVER UNDER
CONTROL" lights up.
In case of wireless remote controllers
■
After the check operation, the timer lamp is blinking in all
connected indoor units.
■
Select an indoor unit to be used as the master unit in
accordance with the request from the customer.
(It is recommended to select an indoor unit which will be used
most often as the master unit.)
■
Press the operation selector mode button in the remote
controller of the indoor unit selected as the master unit. A "peep"
sound is issued, and the timer lamp turns off in all indoor units.
■
That indoor unit will control changeover of the cooling/heating
operation mode.
For the details, refer to the instruction manual supplied together
with the indoor unit.
11.6. Temperature adjustment operation
confirmation
After the test run is over, operate the unit normally. (Heating is not
possible if the outdoor temperature is 24°C or higher.)
■
Make sure the indoor and outdoor units are operating normally
(If a knocking sound can be heard in the liquid compression of
the compressor, stop the unit immediately and then energize the
heater for a sufficient length of time before restarting the
operation.)
■
Run each indoor unit one at a time and make sure the
corresponding outdoor unit is also running.
■
Check to see if cold (or hot) air is coming out of the indoor unit.
■
Press the fan direction and fan strength buttons on the indoor
unit to see if they operate properly.
12. S
ERVICE
MODE
OPERATION
After turning on the power supply, the unit can not be started until the
H2P initialisation led, indicating that the unit is still under preparation,
goes off (maximum 12 minutes).
Vacuuming method
At the first installation, this vacuuming is not required. It is required
only for repair purposes.
1
When the unit is at a standstill and under the setting mode 2, set
the required function B (refrigerant recovery operation/
vacuuming operation) to
(ON).
-
After this is set, do not reset the setting mode 2 until the
vacuuming is finished.
-
The H1P led is on and the remote controller indicates
(test operation) and
(external control) and the
operation will be prohibited.
2
Vacuum the system with a vacuum pump.
3
Press the
button and reset the setting mode 2.
Refrigerant recovery operation method by a refrigerant
reclaimer.
1
When the unit is at a standstill and in setting mode 2, set the
required function B (refrigerant recovery operation/vacuuming
operation) to
(ON).
-
For Sky Air or room air conditioner indoor units only:
Expansion valves of BP unit and outdoor unit will fully open
and some solenoid valves will open.
-
For VRV indoor units only:
The indoor unit and the outdoor unit expansion valves will
fully open and some solenoid valves will open.
-
The H1P led is on and the remote controller indicates
(test operation) and
(external control) and the
operation will be prohibited.
2
Recover the refrigerant using a refrigerant reclaimer. For details,
see the operation manual delivered with the refrigerant
reclaimer.
3
Press the
button and reset the setting mode 2.
Cautions for normal operation check
■
Once stopping, the compressor will not restart in
about 5 minutes even if the Run/Stop button of an
indoor unit in the same system is pressed.
■
When the system operation is stopped by the remote
controller, the outdoor units may continue operating
for a further 1 minute maximum.
■
After the test run, when handling the unit over to the
customer, make sure the electric box lid, the service
lid and the unit casing are all attached properly.
CAUTION
Never turn the power of the outdoor unit OFF while the
refrigerant is being recovered.
If the power is turned OFF, the solenoid valves are closed
and the refrigerant cannot be recovered from the outdoor
unit.
ON
BS1 MODE
ON
BS1 MODE
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