Transmission Error; Switch Operation Error - Fujitsu Airstage V-II Service Manual

Trouble shooting 71
Error Contents :

Transmission Error

Condition :
Normal communication with Indoor unit has been suspended for longer than 1 minute.
Cause 1 : DIP switch setting defective
Check setting of DIP-SW1-4, 1-5, 1-6.
Cause 2 : External noise
Remove or shut out external noise source.
Trouble shooting 72
Error Contents :

Switch Operation Error

Condition :
Switch input can not be detected.
Cause 1 : Connection cable is defective or open.
Check installation of connection cable.
Check if connection cable is open.
Cause 2 : Defective insertion or open
connection of the cable between External
Switch Controller terminal and PCB.
Check connector insertion.
Check if connection cable is open.
Cause 3 : DIP switch setting defective
Check DIP Switch setting.
Symptom :
LED repeats flashing 0.5sec ON & 1.0sec OFF.
OK
Symptom :
LED is lighting but Switch (SW1 or SW2) does not operate.
OK
OK
Cause 3 : Ext. Switch Controller is defective.
Replace External Switch Controller.
OK
Cause 4 : External Switch is defective
Check any short or switch operation failure.
Check resistance value between the terminals, at the
time of input.
OPEN : More than 50
SHORT : Less than 1
Cause 5 : Ext. Switch Controller is defective.
Replace External Switch Controller.
OK
04-76
OK