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21
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Commissioning
Installer and user reference guide
116
RXYSQ4~6T8V/YB
VRV IV-S system air conditioner
4P482277-1B – 2020.10
21.3 Checklist during commissioning
To perform a
test run
.
21.4 About the test run
NOTICE
Make sure to carry out the test run after the first installation. Otherwise, the
malfunction code
will be displayed on the user interface and normal operation or
individual indoor unit test run cannot be carried out.
The procedure below describes the test operation of the complete system. This
operation checks and judges following items:
▪
Check of wrong wiring (communication check with indoor units).
▪
Check of the stop valves opening.
▪
Judgement of piping length.
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 concerning the individual test run.
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.
21.5 To perform a test run (7-segment display)
21.6 Correcting after abnormal completion of the test run
The test operation is only completed if there is no malfunction code displayed. In
case of a displayed malfunction code, perform correcting actions as explained in
the malfunction code table. Carry out the test operation again and confirm that the
abnormality is properly corrected.
INFORMATION
If a malfunction occurs, the error code is displayed on the user interface of the
indoor unit.
INFORMATION
Refer to the installation manual of the indoor unit for detailed malfunction codes
related to indoor units.