English - 86TROUBLE SHOOTINGThe roboticlawnmower vibratesDamaged blades lead to imbalancein the cutting system.Inspect the blades and screws and replace themif necessary, see 8.7 Blades on page 78.Several blades in the same positionlead to imbalance in the cuttingsystem.Check that only one blade is fitted per screw.The roboticlawnmower runs, butthe blade disc doesnot rotateThe robotic lawnmower follows aguide wire or boundary wire to orfrom the charging station.This behavior is normal and no action is required.The robotic lawnmower searches fora guide wire or boundary wire andthe battery charge is very low.This behavior is normal and no action is required.The roboticlawnmower mowsfor shorter periodsthan usual betweenchargesGrass or other foreign object blocksthe blade disc.Remove and clean the blade disc, see 8.4Cleaning on page 76.The battery is spent. Contact the local dealer.Both the mowingand charging timesare shorter thanusualThe battery is spent. Contact the local dealer.The roboticlawnmower oftenmoves in circles orspiralsSpiral mowing is a natural part of therobotic lawnmower's movement patter.Adjust how often spiral mowing is carried out.This function can be deactivated if necessary.Refer to 6.9 Settings page 61.The roboticlawnmower turnsround and stayson a small area forseveral minutes.This is completely normal forAutomower® 430X and 450X withGPS navigation and contributes to aneven result.No action.1157866-26,420,430X,450X,EN_160314.indd 86 2016-03-14 17:00:05