Fujitsu AUXB04GALH Service Manual page 163

Network Convertor (UTY-VGGXZ1) Group Remote controller Setting
Trouble shooting 85
Error Contents :
Communication Error
with Group Remote Controller
Details :
Condition of occurrence : The communication between Group Remote and Network Convertor was not normally performed.
Release condition : When the communication between Group Remote and Network Convertor resumes normal operation.
Cause 1 : External noise
After pressing SW104 of Network Convertor PCB for 5 seconds or turning on power.
Does error code display reappear?
YES
Remove the surrounding noise source.
OK
Cause 2 :
Defective or open connection of cable wire between Network Convertor and Connected Remote Controller.
After the following are checked, the power supply is reset.
Check connection cable wire between Network Convertor and Connected Remote Controller.
Check connection between Control PCB and Terminal.
OK
Cause 3 : Incorrect setting of Network Convertor's DIP-SW103[1 to 4]
Check Network Convertor PCB DIP-SW103[1 to 4] ON.
OK
Cause 4 : Defective Remote Controller or Network Convertor.
Replace Remote Controller or Network Convertor.
-
Symptom :
Error Code display [ 1 2 ] Control/Display from Group Remote is
not available.
NO
It is not a defect of PCB. Remove the surrounding noise source.
04-93