Fujitsu ARU7RLF Service Instruction

Also see for AGU12RLF: Design & technical manual Service manual Service instructions Service instructions Design & technical manual

Detective Actuators: Detective details:Forecast of Cause :Indoor unit Controller PCBLimit switchDamperWhen limit switch were not able to detect the close though the damper close.(Upper air flow)When limit switch were not able to detect the open though the damper open.(Upper & Lower air flow)1. Limit switch failure 2. Shorted connector/ wire 3. Damper faulure4. Controller PCB failureCheck Point 2 :Check Point 2 : Check Connector (CN18) / WireCheck Point 1 : Check Limit switchCheck Point 4 : Replace Controller PCBOKOKOKOKCheck operation of limit switch. (any blocking by dust, etc.)Remove Limit switch and check ON/OFF switching operation by using a meter.>>If Limit switch is detective, replace it.Check loose contact of CN18 /shorted wire (pinched wire).>>Replace Limit switch if the wire is abnormalCheck Point 2 :Check Point 3 : Check DamperOKOK>>Replace Damper if the damper is abnormalIf Check Point 1 3 do not improve the symptom, change Controller PCB.Check the obstruction of damper movement.Check the damper movement.Trouble shooting 11-1INDOOR UNIT Error Method:Damper error(Damper(Open/Close) detection Limit switch error)02-14Indicate or Display:Refer to error code table.