Daikin REYQ120AATJ Series, Installation Manual

Page: 44 / 51

41 English
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 mag-
netic sound of a solenoid valve may become loud and the display
indication may change.
These are not malfunctions.
Procedure
1 Close all front panels in order to not let it be the cause of misjudg-
ment.
2
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3 Turn ON the power to the outdoor units, the connected Branch
Selector units and the connected indoor units.
NOTE
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
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-
ing the push buttons and DIP switches on the printed circuit board
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test operation.
• The test operation is automatically carried out, the outdoor unit
display will indicate
01
and the indication Test operation and
Under centralized control will display on the user interface of
indoor units.
Steps during the automatic system test run procedure:
-
01
: control before start up (pressure equalization)
-
02
: cooling start up control
-
03
: cooling stable condition
-
04
: communication check
-
05
: stop valve check
-
06
: pipe length check
-
07
: refrigerant amount check
-
08
Ũ
-
09
: pump down operation
-
10
: 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 user interface. To abort the operation, press
BS3. The unit will stop after ±30 seconds.
*1 The progress rate is displayed in
00P
-
99P
, but it may advance
rapidly.
5 Check the test operation results on the outdoor unit segment
display.
- Normal completion: no indication on the segment display
(idle).
- Abnormal completion: indication of error code on the seg-
ment display.
Refer to 15.4.3. Correcting after abnormal completion of the
test operation to take actions for correcting the abnormality.
When the test operation is fully completed, normal operation
will be possible after 5 minutes.
15.4.3. Correcting after abnormal completion of the test
operation
The test operation is only completed if there is no error code displayed
on the user interface or outdoor unit segment display. In case an error
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abnormality is properly corrected.
INFORMATION
Refer to the installation manual of the indoor unit for other detailed
error codes related to indoor units.
15.5. Error code list
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-
plained in the error code table.
After correcting the abnormality, press BS3 to reset the error code and
retry operation.
The error code which is displayed on the outdoor unit will indicate a
main error code and a sub code. The sub code indicates more detailed
information about the error code. The error code will be displayed
intermittent.
Example:
Main code Sub code
With an interval of 1 second, the display will switch between main
code and sub code.
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