LG PC Central Controller Installation Manual page 43

Network error code
Error indication
number
240
• Defect check method
1) Confirm whether the communication wire is connected properly.
2) If the central controller is connected to whole network then conform whether CNU, central controller
etc IP is correct.
3) It seems CNU has been changed .
Error indication
number
244
• Defect check method
1) Confirm whether the communication wire is connected properly.
2) If the Central controller is connected to whole network then conform whether CNU, Central
controller etc IP is correct.
3) Check the CNU.
Error indication
number
250/251
• Defect check method
1) Confirm whether the Air-conditioner addressing of the central controller and the actual system's
addressing is same or not.
2) Restart the central controller service (engine ) program.
3) Replace the CNU.
Error items
Central controller
Connector Error
(I-G/W connection
thecentralcontroller
failure)
Error items
Central controller Communication failure
(receiving time is between the central
more then 3
seconds)
Error items
Central controller
Check sum Error
Installation of PC Central Controller Software
Meaning
• Communication wire connection
Communication
defect
connection failure
• CNU defect central controller
between
and CNU IP
• Setting is not correct
and CNU
• Communication defect
Meaning
• CNU Defect
• Failure in central controller
controller and the
initialization
CNU
Meaning
• NOISE occurrence
Central controller • CNU defect
Check sum Error • Timing non-synchronizing
• Air-conditioner defect
Cause
Cause
Cause
Installation Manual 43