Installation of PC Central Controller Software
Installation Manual
43
ENGLISH
Error indication
number
Error items
Meaning
244
Central controller
(receiving time is
more then 3
seconds)
Communication failure
between the central
controller and the
CNU
• CNU Defect
• Failure in central controller
initialization
Cause
• 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.
Network error code
Error indication
number
Error items
Meaning
240
Central controller
Connector Error
(I-G/W connection
failure)
Communication
connection failure
between
thecentralcontroller
and CNU
• Communication wire connection
defect
• CNU defect central controller
and CNU IP
• Setting is not correct
• Communication defect
Cause
• 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
Error items
Meaning
250/251
Central controller
Check sum Error
Central controller
Check sum Error
• NOISE occurrence
• CNU defect
• Timing non-synchronizing
• Air-conditioner defect
Cause
• 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.