Installation manual
23
RXYQ8~18P7W1BR1
VRVIII System air conditioner
4PW44039-1E – 07.2010
12.4. Test operation
In case refrigerant was added (charging in cooling mode)
■
In the check operation, the following checks and judgement will
be performed:
■
Check of the stop valve opening
■
Check for wrong wiring
■
Judgement of piping length
■
It takes ±30 minutes to complete the check operation.
Check operation procedure
1
Close the electric box lid and all front panels except the one on
the side of the electric box.
2
Turn on the power to the outdoor unit and all connected indoor
units. Be sure to turn the power ON at least 6 hours before
operation in order to have power running to the crank case
heater.
3
Make the field setting as needed using the push buttons on the
PCB (A1P) of the outdoor unit. Refer to
4
Set the check operation (without initial refrigerant decision)
following setting mode 2 in the field setting and perform the
check operation.
The system operates for ±30 minutes and automatically stops
the check operation.
■
If no malfunction code is displayed on the remote controller
after the system has stopped, check if the operation is
completed. Normal operation will be possible after 5 minutes.
■
If a malfunction code is displayed on the remote controller,
correct the malfunction and perform the check operation
again as decribed in
"Correcting after abnormal completion
of the test operation" on page 24
In case refrigerant was added (pre-charging, charging in
heating mode)
■
In the check operation, the following checks and judgement will
be performed:
■
Check of the stop valve opening
■
Check for wrong wiring
■
Check of refrigerant overcharge
■
Judgement of piping length
■
It takes ±40 minutes to complete the check operation.
Perform the test operation as decribed in the paragraph
operation procedure" on page 23
Test operation procedure
1
Close all front panels except the front panel of the electric box.
2
Turn ON the power to all outdoor units and the connected indoor
units.
Be sure to turn on the power 6 hours before operation in order to
have power running to the crank case heater and to protect the
compressor.
3
Make the field setting as described in the paragraph
4
Press the
button once, and set to the SETTING
MODE (H1P LED = OFF).
5
Press and hold the
button down for 5 seconds or
more. The unit will start the test operation.
■
The test operation is automatically carried out in cooling
mode, the H2P LED will light up and the messages "Test
operation" and "Under centralized control" will display on the
remote controller.
■
It may take 10 minutes to bring the state of the refrigerant
uniform before the compressor starts.
■
During the test operation, the refrigerant running sound or
the magnetic sound of a solenoid valve may become loud
and the LED display may change, but these are not mal-
functions.
■
During the test operation, it is not possible to stop the unit
operation from a remote controller. To abort the operation,
press the
button. The unit will stop after
±30 seconds.
6
Close the front panel in order to let it not be the cause of
misjudgement.
7
Check the test operation results by the LED display on the
outdoor unit.
8
When the test operation is fully completed, normal operation will
be possible after 5 minutes.
Otherwise, refer to
"Correcting after abnormal completion of the
to take actions for correcting the
abnormality.
Do not insert fingers, rods or other objects into the air
inlet or outlet. When the fan is rotating at high speed, it
will cause injury.
Do not perform the test operation while working on the
indoor units.
When performing the test operation, not only the outdoor
unit, but the connected indoor unit will operate as well.
Working on a indoor unit while performing a test operation
is dangerous.
H1P
H2P
H3P
H4P
H5P
H6P
H7P
Normal completion
x
x w x
x
x
x
Abnormal completion
x w w x
x
x
x
BS1 MODE
BS4 TEST
BS3 RETURN
