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The test operation is automatically carried out, the outdoor unit
01
display will indicate
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
-
: detailed refrigerant situation check
09
-
: pump down operation
10
-
: unit stop
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.
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 malfunction code on the
segment 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.
Malfunction code
Main
Sub code
code
Master/sub 1/sub 2
01/03/05
E3
02/04/06
13/14/15
18
01/02/03
E4
01/05/08
E9
03/06/09
04/07/10
26/27/28
29/34/39
31/36/41
3P362438-5N English
Contents
High pressure switch is activated.
(S1PH, S2PH)-A1P (X2A, X3A)
High pressure switch connectors are detached.
-A1P (X2A, X3A, X4A)
Stop valves are closed.
Refrigerant overcharge.
Liquid pipe stop valve is closed.
Stop valves are closed.
Refrigerant overcharge.
Low pressure malfunction:
Stop valves are closed.
Refrigerant shortage.
Reverse connection of high/low pressure gas pipe
and suction gas pipe of Branch Selector unit.
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15.4.3.
Correcting after abnormal completion of the test
operation
The test operation is only completed if there is no malfunction code
displayed on the user interface or outdoor unit segment display. In
case of a displayed malfunction code, perform correcting actions as
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INFORMATION
Refer to the installation manual of the indoor unit for other detailed
malfunction codes related to indoor units.
15.5. Malfunction code list
In case of a displayed malfunction code, perform correcting actions as
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After correcting the abnormality, press BS3 to reset the malfunction
code and retry operation.
The malfunction code which is displayed on the outdoor unit will indi-
cate a main malfunction code and a sub code. The sub code indicates
more detailed information about the malfunction code. The malfunc-
tion 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.
Check stop valves situation or abnormalities in
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Securely connect each connector. Refer to the wiring
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Open stop valves.
Check refrigerant amount and recharge.
Open liquid pipe stop valve.
Open stop valves.
Check refrigerant amount and recharge.
Open stop valves.
Check refrigerant amount and recharge.
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Check connection on printed circuit board or actuator.
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Check connection on printed circuit board or actuator.
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Check connection on printed circuit board or actuator.
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Check connection on printed circuit board or actuator.
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Check connection on printed circuit board or actuator.
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Check connection on printed circuit board or actuator.
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Solution
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