Fujitsu Airstage VR-II Series Service Manual page 105

Trouble shooting 12
INDOOR UNIT Error Method:
Address setting Error 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 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.
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:
E26. 5
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 address number set by auto setting and manual setting are mixed in
one RC group
04-21
Filter LED Continuous Flash.