Troubleshooting Schedule - Husqvarna DXR250 Operator's Manual

Troubleshooting schedule

WARNING! Most accidents involving machines occur during trouble shooting, service and
!
maintenance as staff have to locate themselves within the machine's risk area. Prevent accidents
by being alert and by planning and preparing the work. You can also refer to 'Preparations for
maintenance and service" in the 'Maintenance and service" section.
If service operations or trouble shooting does not require the machine to be switched on, the
power cable must be removed and positioned so that it cannot be connected by mistake.
Following the trouble shooting guide will provide you with tips to facilitate the trouble shooting process. You can also
perform simpler trouble shooting operations. The operator may only carry out the maintenance and service operations
that are described in this Operator's Manual. More extensive interventions must be carried out by an authorized service
workshop.
Always start by checking any error messages on the remote control. Follow the instructions for the respective message
in accordance with the error messages section.
Problem
The electric motor does not
start.
Fuses for the mains
connection blow when
starting.
The motor runs but the
hydraulic functions have no
power or do not work at all.
Arm movements and tool
function run slowly.
70 – English
TROUBLESHOOTING
Cause
Emergency stop/machine stop is
pressed.
Too low mains voltage to the machine. Check power supply and ensure correct voltage.
A fuse has blown.
No radio communication between
remote control and machine.
The machine's fuses have too low a
rating.
Electric motor blown.
Defective power cable.
The hydraulic pump has cut out.
Too little hydraulic fluid in the tank.
(Noise emanating from the pump.)
Circulation valve open.
Fault in the pump regulator.
Standby pressure set too low.
The potentiometer that controls
mechanical movements/tools is
screwed down.
Standby pressure set too low.
Possible action
Check that the emergency stop or machine stop button
are not pressed by turning them clockwise.
Check that the mains voltage is compatible with the
machine and that the correct fuses are used.
Check the power cable.
Green symbol in the display indicates contact. If the
symbol is red, check that the battery for the remote
control is charged and correctly inserted. Ensure that
the correct remote control is being used. Check that
the communication cable and aerial cable on the
machine are properly secured. Test run the machine
using cable control.
Check that the mains voltage is compatible with the
machine and that the correct fuses are used.
Contact your service agent.
Change the power cable.
Contact your service agent.
Stop the motor at once. Investigate and rectify any
leaks there might be. Replenish hydraulic fluid.
Check the diode on the valve cap at the bottom of
valve block 1. If the circulation valve is open the diode
does not light up. Check the cable to the control
module.
Extend an unloaded cylinder to its end position and
check the pump pressure in the display. If you get
maximum pressure the pump regulator is OK.
Activate the remote control without operating any
functions and check the settings for stand-by pressure
on the display. The pressure should be 20 ± 1 bar.
Unscrew the knob(s).
Activate the remote control without operating any
functions and check the settings for stand-by pressure
on the display. The pressure should be 20 ± 1 bar.