Fujitsu AU G18LVLB Series Service Instruction page 37

Trouble shooting 8
INDOOR UNIT Error Method:
Connection unit number error (Indoor
unit in Wired remote controller system)
Detective Actuators:
Wired remote controller ( 2-Wire )
Indoor unit Controller PCB circuit
Forecast of Cause : 1. Wrong wiring / Number of I.U, RC in RCgroup 2. Indoor unit controller PCB defective
Check Point 1 : Wire installation
Wrong number of connecting indoor unit
Check Point 2 : Check Indoor unit controller PCB
Check if controller PCB damage
Check if controller PCB and check the Error after setting remote controller address
Indicate or Display:
Error code : 29
Detective details:
When the number of connecting indoor units are out of specified rule.
02-09
Outdoor unit : No indication