Fujitsu AO G22KBTB Series Service Manual page 39

Trouble shooting 7
INDOOR UNIT Error Method:
Indoor unit address setting error
Detective Actuators:
Wired remote controller ( 2-Wire )
Indoor unit Controller PCB circuit
Forecast of Cause :
1. Wrong wiring of RCgroup 2. Wrong remote address setting 3. Indoor unit controller PCB failure
4. Remote controller failure
Check Point 1 : Wire installation
Wrong wire connection in RCgroup (Please refer to the installation manual)
OK
Check Point 2 : Wrong RCgroup setting
The given address number by auto setting (00) and the manual set number (Except 00)
were not existing in one RCG.
The remote controller address setting by U.I. were not existing same address.
The duplicated address number is not existing in one RCgroup
OK
Check Point 3 : 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:
Error code : 26
Detective details:
When the address number set by auto setting and manual setting are
mixed in one RC group.
When the duplicated address number exists in one RC group.
02-08
Outdoor unit : No indication