Correcting After Abnormal Completion Of The Test Run; Hand-Over To The User; Troubleshooting; Solving Problems Based On Error Codes - Daikin VRV IV+ Installation And Operation Manual

18 Hand-over to the user

Step
Communication check
Stop valve check
Pipe length check
Refrigerant amount check
In case [2‑88]=0, detailed refrigerant situation
check
Pump down operation
Unit stop
Note: 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 7‑segment
display.
Completion
Normal completion No indication on the 7‑segment display (idle).
Abnormal Indication of malfunction code on the
completion 7‑segment display.
Refer to "17.5 Correcting after abnormal
completion of the test
actions for correcting the abnormality. When
the test operation is fully completed, normal
operation will be possible after 5 minutes.
17.5 Correcting after abnormal
completion of the test run
The test operation is only completed if there is no malfunction code
displayed on the user interface or outdoor unit 7‑segment display. In
case of a displayed malfunction code, 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
detailed malfunction codes related to indoor units.
19.2

Error codes: Overview

In case other error codes appear, contact your dealer.
Main code
Master
Installation and operation manual
40
Description
Description
run" [ 4 40] to take
Sub code
Slave 1 Slave 2
Earth leakage detector activated
Earth leakage detector malfunction:
open circuit) - A1P (X101A )
High pressure switch was activated
(S1PH, S2PH) - A1P (X2A , X3A)
▪ Refrigerant overcharge
▪ Stop valve closed
Stop valve closed (liquid)
▪ Refrigerant overcharge
▪ Stop valve closed
18 Hand-over to the user
Once the test run is finished and the unit operates properly, please
make sure the following is clear for the user:
▪ Make sure that the user has the printed documentation and ask
him/her to keep it for future reference. Inform the user that he can
find the complete documentation at the URL mentioned earlier in
this manual.
▪ Explain the user how to properly operate the system and what to
do in case of problems.
▪ Show the user what to do for the maintenance of the unit.
19

Troubleshooting

19.1 Solving problems based on error
codes
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
indicate a main malfunction code and a sub code. The sub code
indicates more detailed information about the malfunction code. The
malfunction code will be displayed intermittent.
Example:
Code
Main code
Sub code
With an interval of 1 second, the display will switch between main
code and sub code.
Cause
Restart the unit. If the problem
reoccurs, contact your dealer.
Check connection on PCB or actuator.
Check stop valve situation or
abnormalities in (field) piping or airflow
over air cooled coil.
▪ Check refrigerant amount+recharge
unit.
▪ Open stop valves
Open liquid stop valve.
▪ Check refrigerant amount+recharge
unit.
▪ Open stop valves.
Example
Solution
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ heat pump
4P546220-1C – 2020.10