Test Operation Procedure - Daikin VRV EMERION RXYQ-AATJA Service Manual

SiUS342303E
3.2

Test Operation Procedure

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.
 Judgment of piping length.
On top of this system test operation, indoor units operation should also be checked separately.
 Make sure to carry out the system test operation after the first installation. Otherwise, the error
 Abnormalities on indoor units cannot be checked for each unit separately. After the test
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
Procedure
1. Close all front panels in order to not let it be the cause of misjudgment
2. Make sure all field settings you want are set.
3. Turn ON the power to the outdoor unit and the connected indoor units.
4. Make sure the default (idle) situation is existing. Press the SET (BS2) button for 5 seconds or
Part 5 Field Settings and Test Operation
code U3 will be displayed on the remote controller and normal operation or individual indoor unit
test run cannot be carried out.
operation is finished, check the indoor units one by one by performing a normal operation using
the remote controller. Refer to indoor unit installation manuals for more details concerning the
individual test run.
valve may become loud and the display indication may change. These are not malfunctions.
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.
more. The unit will start test operation.
 The test operation is automatically carried out, the outdoor unit display will indicate t01 and
the indication Test operation and Under centralized control will display on the remote
controller of indoor units.
Steps during the automatic system test run procedure:
t01: control before start up (pressure equalization)
t02: cooling start up control
t03: cooling stable condition
t04: communication check
t05: stop valve check
t06: pipe length check
t07: refrigerant amount check
t08: —
t09: pump down operation
t10: unit stop
 During the test operation, the progress rate (1) will be displayed alternately with the display.
 During the test operation, it is not possible to stop the unit operation from a remote
controller. To abort the operation, press the RETURN (BS3) button. The unit will stop after
around 30 seconds.
1. The progress rate is displayed in 00P-99P, but it may advance rapidly.
Test Operation
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