Fujitsu ARYG72LHTA Service Instruction page 46

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.
02-10
Outdoor unit :
PUMP LOW
POWER
DOWN NOISE
ERROR
MODE (L1) (L2) (L3) (L4)
5 15
2
PEAK
CUT
(L5) (L6)