If the robot does not position correctly during washing it could be due to a number of reasons:

• Memory lost after restart
• Moved or faulty zero position sensors
• Faulty magnetic switch
• Setting boom zero position not in bottom (ie. accidentally set zero position when it is stuck)
• Wheels slipping, markers incorrectly mounted etc. making the wheels position incorrectly
• Guidance wheels have too big obstacles to climb in the aisle.
• Insufficient margins during programming so the robot run in to things in boxes which the program was not created in
• Incorrectly fastened nozzle coupling
• Tower or arm friction clutch released

Lost positions will show when robot parks incorrectly between washing programs or when it does not wash where expected.

• Redo the homing
• Contact service and check parking positions
• Check tower parking position
• Check arm and nozzle parking positions
• Check function of zero position sensors for tower, telescope, arm and nozzle at Manual screen. The black dot should be visible when the position is zero.
• Check function of magnetic switch. The blue dot should be visible on the Start screen when a magnet is present.
• Follow the robot when it moves along the aisle to make sure the wheels do not slip or get caught on for example hinges