To Perform A Test Run - Daikin VRV IV+ RYYQ12U7Y1B Series Installer And User Manual

8 Commissioning
▪ Check of the stop valves opening.
▪ Judgement of piping length.
▪ Gathering reference data for leak detection functionality. If the
leak detection functionality is required, the test run needs to be
executed including a detailed refrigerant situation check. If the
leak detection functionality is NOT required, the test run can skip
the detailed refrigerant situation check. This can be defined by
setting [2‑88].
INFORMATION
The refrigerant situation check cannot be performed
beyond the following limits:
▪ Outdoor temperature: 0~43°C DB
▪ Indoor temperature: 20~32°C DB
Value [2‑88]
0 The test run will be executed including the
detailed refrigerant situation check. After the
test run, the unit will be prepared for leak
detection functionality (for more details, see
"7.4 Using the leak detection function" on
page 46).
1 The test run will be executed without the
detailed refrigerant situation check. After the
test run, the unit will NOT be prepared for leak
detection functionality.
INFORMATION
▪ When [2‑88]=0, the test operation time can take up to
4 hours.
▪ When [2‑88]=0 and the test operation was aborted
before the end, the
the user interface. It is possible to operate the system.
Leak detection function will NOT be available. It is
recommended to re-execute the test operation.
▪ If the autocharge function was used, the unit informs
the user in case unfavourable ambient conditions are
present to gather detailed refrigerant situation data.
When this is the case, the accuracy of leak detection
operation will drop. It is recommended in such a case
to perform the test operation again on another more
favourable moment. In case no "
information was displayed during the autocharging
procedure, it is possible to have reliable data gathering
during the test operation. See ambient limitations in the
information table on
charge refrigerant" on
In case Hydrobox units or RA DX indoor units are present in the
system, the pipe length check and the refrigerant situation check will
not be performed.
In case Hydrobox units or RA DX indoor units are present in the
system, the pipe length check will not be performed.
▪ Make sure to carry out the system test operation after the first
installation. Otherwise, the malfunction code
on the user interface and normal operation or individual indoor unit
test run cannot be carried out.
▪ Abnormalities on indoor units cannot be checked for each unit
separately. After the test operation is finished, check the indoor
units one by one by performing a normal operation using the user
interface. Refer to the indoor unit installation manual for more
details (e.g., Hydrobox) concerning the individual test run.
Installer and user reference guide
48
Description
warning code will be visible on
" or "
"6.7.7 Step 6b: To manually
page 32.
will be displayed
INFORMATION
▪ It may take 10 minutes to achieve a uniform refrigerant
state 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 display indication may change. These are
not malfunctions.
8.5

To perform a test run

1 Close all front panels in order to not let it be the cause of
misjudgement (except the electrical component box inspection
opening service cover).
2 Make sure all field settings you want are set; see
field settings" on page 37.
3 Turn ON the power to the outdoor unit and the connected
indoor units.
NOTICE
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.
4 Make sure the default (idle) situation is existing; see
access mode 1 or 2" on page
more. The unit will start test operation.
Result: The test operation is automatically carried out, the
outdoor unit display will indicate "
operation" and "Under centralised control" will display on the
user interface of indoor units.
Steps during the automatic system test run procedure:
Step
Control before start up (pressure equalisation)
Cooling start up control
Cooling stable condition
Communication check
Stop valve check
Pipe length check
Refrigerant amount check
"
In case [2‑88]=0, detailed refrigerant situation
check
Pump down operation
Unit stop
Note: During the test operation, it is not possible to stop the unit
operation from a user interface. To abort the operation, press BS3.
The unit will stop after ±30 seconds.
5 Check the test operation results on the outdoor unit 7‑segment
display.
Completion
Normal completion No indication on the 7‑segment display (idle).
Abnormal Indication of malfunction code on the
completion 7‑segment display.
Refer to
completion of the test run" on page 49
actions for correcting the abnormality. When
the test operation is fully completed, normal
operation will be possible after 5 minutes.
"7.2 Making
"7.2.4 To
38. Push BS2 for 5 seconds or
" and the indication "Test
Description
Description
"8.6 Correcting after abnormal
to take
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ heat pump
4P546228-1 – 2018.09