Test Operation - Daikin VRVIII REYQ-P8 Installation Manual

12.4. Test operation

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.
In case the unit is operated with the leak detection function
available:
the outdoor temperature must be 0°C DB~43°C DB
the indoor temperature must be 20°C DB~32°C DB
In case the unit is operated out of the temperature range as
instructed above, the display of the remote controller shows U3
and the unit operates without the availability of the leak detection
function.
In the test operation, the following checks and judgement will be
performed:
Check of the stop valve opening
Check for wrong wiring
Check of refrigerant overcharge
Initial refrigerant detection
In case the leak detection function is available, the check
operation will last 2 hours, otherwise it takes between 40 and
60 minutes to complete the check operation.
Make sure to carry out the test operation after the first
installation. Otherwise, the malfunction code U3 will be displayed
on the remote controller and normal operation can not be
carried out.
Abnormalities on indoor units can not be checked for each unit
individual. After the test operation is finished, check the indoor
units one by one by performing a normal operation using the
remote controller.
NOTE A test operation can not be carried out when the
outdoor temperature is less than –5°C.
REYQ8~16P8Y1B
VRVIII System air conditioner
4PW39996-1A
Test operation procedure
1 Close all front panels except the front panel of the electric
component box.
2 Turn ON the power to the outdoor unit and the connected indoor
units.
Be sure to turn on the power 6 hours before operation in order to
have power running to the crankcase heater and to protect the
compressor.
3 Make the field setting as described in the paragraph
setting" on page 21.
4 Press the button once, and set to the SETTING
BS1 MODE
MODE (H1P LED = OFF).
5 In case the leak detection function is required,
press and hold the
BS4 TEST
more. The unit will start the test operation.
In case the leak detection function is not required,
go into setting mode 2 by pressing the
seconds. The H1P LED is on
1. Press the
BS2 SET
H1P H2P H3P H4P H5P H6P H7P
w x x x x w w
2. Press the
BS3 RETURN
H1P H2P H3P H4P H5P H6P H7P
w x x x x x c
3. Press the
BS2 SET
display to the following display.
H1P H2P H3P H4P H5P H6P H7P
w x x x x c x
4. Press the
BS3 RETURN
5. Press the
BS3 RETURN
test operation. 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
BS3 RETURN
±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.
H1P H2P H3P H4P H5P H6P H7P
x x w x x x x
Normal completion
x w w x x x x
Abnormal completion
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
test operation" on page 24
abnormality.
"12.3. Field
button down for 5 seconds or
button for 5
BS1 MODE
w
. Perform following steps.
button 3 times.
button once to confirm.
button in order to change the LED
button once to confirm.
button a second time to start the
button. The unit will stop after
to take actions for correcting the
Installation manual
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