Fujitsu Airstage VR-II Series - Check Indoor Unit Controller PCB; Wire Installation; Wrong Rcgroup Setting

Trouble shooting 11 E26. 4
INDOOR UNIT Error Method:
Address Duplication in Wired remote
contorller system
Indicate or Display:
Indoor Unit : Operation LED 2 times Flash, Timer LED 6 Times Flash,
Filter LED Continuous Flash.
Outdoor Unit : E.5 U.1
Error Code : 2 6
Detective Actuators:
Wired remote controller ( 2-Wire )
Indoor unit Controller PCB circuit
Detective details:
When the duplicated address number exists in one RCgroup
Check Point 3 : Check Indoor unit controller PCB
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)
Change controller PCB and check the Error after setting remote controller address
Check if controller PCB damage
Check Point 2 : Wrong RCgroup setting
The duplicated address number is not existing in one RCgroup
04-20