38
3P362438-9N
English
•
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
: 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.
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 a malfunction code is displayed, perform correcting actions as
explained in the malfunction code table. Carry out the test operation
again and confirm that the abnormality is properly corrected.
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
explained in the malfunction code table.
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.
Malfunction code
Contents
Solution
Main
code
Sub code
Master/sub 1/sub 2
E3
01/03/05
•
High pressure switch is activated.
(S1PH)-A1P (X2A)
•
High pressure switch connectors are detached.
-A1P (X2A, X3A, X4A)
•
Check stop valves situation or abnormalities in
(field) piping or airflow over air cooled coil.
•
Securely connect each connector. Refer to the wiring
diagram attached to the back of the control box cover.
02/04/06
•
Stop valves are closed.
•
Refrigerant overcharge.
•
Open stop valves.
•
Check refrigerant amount and recharge.
13/14/15
Liquid pipe stop valve is closed.
Open liquid pipe stop valve.
18
•
Stop valves are closed.
•
Refrigerant overcharge.
•
Open stop valves.
•
Check refrigerant amount and recharge.
E4
01/02/03
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.
•
Open stop valves.
•
Check refrigerant amount and recharge.
E9
01/05/08
Electronic expansion valve malfunction
(Y1E)-A1P (X21A)
Check connection on printed circuit board or actuator.
03/06/09
Electronic expansion valve malfunction
(Y2E)-A1P (X22A)
Check connection on printed circuit board or actuator.
04/07/10
Electronic expansion valve malfunction
(Y3E)-A1P (X23A)
Check connection on printed circuit board or actuator.
26/27/28
Electronic expansion valve malfunction
(Y4E)-A1P (X25A)
Check connection on printed circuit board or actuator.
29/34/39
Electronic expansion valve malfunction
(Y5E)-A7P (X8A)
Check connection on printed circuit board or actuator.
31/36/41
Electronic expansion valve malfunction
(Y6E)-A7P (X10A)
Check connection on printed circuit board or actuator.
32/37/42
Electronic expansion valve malfunction
(Y7E)-A7P (X11A)
Check connection on printed circuit board or actuator.
01_EN_3P362438-9N.indb 38
12/11/2019 2:36:02 PM
