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18.4 About Test Run
18.4.1 Test Run Control
During the test run, the outdoor and indoor units will start
at the same time. Make sure all the preparations for the
ODU and IDU have been completed.
18.4.2 Test Run Frequency
Table 18-2
Model
8-16 kW
Test run frequency (Hz)
44
The following procedures describe the test run of the
whole system. This operation checks and determines the
following items:
Check if there is a wiring error (communication with
the IDU).
Check if the stop valve is open.
Determine the length of the pipe.
18.5 Starting Test Run
There is no test run button SW1 on the ODU check
board/main control board. Press the button once to send
the test run signal to all ODUs and force all IDUs to run
in the cooling mode. Operate the ODUs at a fixed speed
given in the table and the IDUs at a high speed. Press the
button again to exit the test run.
System operation parameters are subject to
automatic diagnosis during the test run. If the
ODU cannot start or stops abnormally during the
test run, conduct troubleshooting according to
the table of error codes and perform the test run
again. If no error code is shown on the ODU digital
display, the test run was successful.
Caution
18.6 Rectifications after Test Run
Is Completed
The test run is considered complete when there is no error
code on the user interface or the outdoor unit display.
When an error code is displayed, rectify the operation
based on the description in the error code table. Try to
conduct the test run again to check that the exception
has been corrected.
Refer to the installation manual of the indoor unit
for details on other error codes related to the
indoor unit.
Information
18.7 Operating the Unit
Once the installation of this unit is completed, and the
test run of the outdoor and indoor units is complete, you
can start to run the system.
The IDU user interface should be connected to facilitate
the operations of the IDU. Please refer to the installation
manual of the indoor unit for more details.
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