Daikin RYYQ8U7Y1B, Installer And User Manual

Page: 148 / 176

20 | Commissioning
Installer and user reference guide
148
RYYQ+RYMQ+RXYQ
VRV IV+ heat pump
4P546228-1C – 2021.11
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] Description
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
"19.4 Using the leak detection
function" [
4
142]).
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
warning code will be visible on 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 "
" or " " 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
"17.4.7 Step 6b: To manually charge refrigerant" [
4
106].
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.
▪ 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.
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.
20.5 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).