Fujitsu AIRSTAGE V-II, Service Manual

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Error Contents :
Software Error
Symptom :
Error Code display [ C A ]
All the control items do not operate.
Other Controls are left they are.
Details :
Condition of occurrence : Micon program performed an abnormal control.
Error of inside information of EEPROM.
initial setting of Network Converor PCB was not normally performed.
Release condition : Micon has been reset, and the control of Network Convertor became normal.
When error disappeared and Network Convetor becomes available to control.
Trouble shooting 82
Trouble shooting 83
Refrigerant circuit address setting
error
Symptom :
Error Code display [ 2 6 ]
Cause 1 : Check of number of indoor unit registration refrigerant circuits
Check indoor unit registration.
(1) Number of refrigerant sircuits of indoor unit registered at Replace Group Remote Controller is 3 refrigerant sircuits or more
even though connected to one converter.
Make 2 refrigerant sircuits or less
and wait 2 minutes
YES
NO
Replace Network Convertor
Replace Group Remote Controller
Condition of occurrence : Indoor unit registration is 3 refrigerant circuits or more.
Release condition : Indoor unit registration is 2 refrigerant circuits or more.
Cause 1 : External noise
Check continuation of error.
(1) If error is released automatically, it is not a defect of PCB. Remove the surrounding noise source around Network Convertor.
(2) If error is not released automatically, check followings.
After pressing SW104 of Network Convertor PCB for 5 seconds or turning on power.
Does error code display reappear?
OK
OK
It is not a defect of PCB. Remove the surrounding noise source. Remove the surrounding noise source.
YES NO
Cause 2 : Network Convertor is defective.
Replace Network Convertor.
04-82
Error Contents :
Details :