Fujitsu AUXB04GALH Service Manual page 87

Trouble shooting 9
INDOOR UNIT Error Method:
Address Duplication in Wired remote
contorller system
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)
Check Point 2 : Wrong RCgroup setting
The duplicated address number is not existing in one RCgroup
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
E26. 4 Indicate or Display:
Outdoor Unit : E.5 U.1
Indoor Unit : Operation LED 2 times Flash, Timer LED 6 Times Flash,
Error Code : 2 6
Detective details:
When the duplicated address number exists in one RCgroup
04-17
Filter LED Continuous Flash.