Fujitsu AUXB04GALH Service Manual page 90

Trouble shooting 12
INDOOR UNIT Error Method:
Connection unit number error
(Remote controller)
Detective Actuators:
Wired remote controller ( 2-Wire )
Forecast of Cause :
1. Wrong wiring / Wrong number of connecting RC in RCgroup
Check Point 1 : Wire installation
Wrong number of connceting remote controller
Check Point 2 : Check Indoor unit controller PCB
Check if controller PCB damage
Change controller PCB and check the Error after setting remote controller address
Indicate or Display:
E29. 2
Outdoor Unit : No Display
Indoor Unit : No Display
Error Code : 2 9
Detective details:
When the number of connecting remote controller are out of specified rule.
04-20
2. Remote controller PCB defective