LG V-NET PQCPC22N0 Installation & User Manual page 122

NOTES
122
When the outdoor unit is Multi V Super Ⅱ , and central control is not well performed with 16 room
central controller or ACP, and the indoor units malfunction such as some indoor units automatically becom-
ing locked state or automatically converting to cooling during heating operation
- PI485 and outdoor unit may not be doubly connected. Please refer to the following picture to
check the connection status of the communication line.
PI485
When the image of LG ACCS is broken and you cannot see the screen such as the temperature well
- Close LG ACCS, and rerun.
※Cautions
- If PC is used for a long period of time, or several application programs are used at the same
time, PC performance may be degraded and may affect the ACP UI.
- When you use LG ACCS, it is recommended to close other application programs.
- It is recommended to use LG ACCS only during the control and monitoring.
(Maximum of 3 hours of usage is recommended according to the PC environment.)
Normal communication line connection
Wrong connection
Main PCB