Daikin VRVIII REYQ-P8 Installation Manual Download

Page: 27 / 32

REYQ8~16P8Y1B
VRVIII System air conditioner
4PW39996-1A

Installation manual

12.4. Test operation

■

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

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

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.

Test operation procedure

Close all front panels except the front panel of the electric
component box.

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.

Make the field setting as described in the paragraph

"12.3. Field

setting" on page 21

Press the

button once, and set to the SETTING

MODE (H1P LED = OFF).

In case the leak detection function is required,
press and hold the

button down for 5 seconds or

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

button for 5

seconds. The H1P LED is on

. Perform following steps.

Press the

button 3 times.

Press the

button once to confirm.

Press the

button in order to change the LED

display to the following display.

Press the

button once to confirm.

Press the

button a second time to start the

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

button. The unit will stop after

±30 seconds.

Close the front panel in order to let it not be the cause of
misjudgement.

Check the test operation results by the LED display on the
outdoor unit.

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

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.

NOTE

A test operation can not be carried out when the
outdoor temperature is less than –5°C.

H1P

H2P

H3P

H4P

H5P

H6P

H7P

w x

x w w

H1P